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Journal articles on the topic 'Multi-stage noise band cancellation'

Author: Grafiati

Published: 1 June 2024

Last updated: 31 July 2025

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1

Pham, D. K. G., P. Desgreys, P. Loumeau, and T. Ridgers. "Multi-stage noise band cancellation modulator for digitisation of distorted signals." Electronics Letters 48, no. 10 (2012): 560. http://dx.doi.org/10.1049/el.2012.0533.

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2

HUSSAIN, AMIR. "MULTI-SENSOR NEURAL-NETWORK PROCESSING OF NOISY SPEECH." International Journal of Neural Systems 09, no. 05 (1999): 467–71. http://dx.doi.org/10.1142/s0129065799000496.

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In this paper, a novel Artificial Neural-Network (ANN) based multi-sensor multi-band adaptive signal-processing scheme is described for enhancing acoustic-speech corrupted by real noise and reverberation. Numerically robust adaptation-algorithms are employed for the ANN based sub-band filters; and, new simulation experiments are reported using real-reverberant automobile data which demonstrate that the proposed speech-enhancement system is capable of outperforming conventional linear filtering-based wide-band and multi-band noise-cancellation schemes.

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3

Seethur, Rashmi, Siva Yellampalli, and Shreedhar H. K. "Design of Common Gate Current-Reuse Noise Cancellation UWB Low Noise Amplifier in 90nm CMOS." International Journal of Electronics, Communications, and Measurement Engineering 11, no. 1 (2022): 1–14. http://dx.doi.org/10.4018/ijecme.312257.

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In this paper, an ultra-wide band (UWB) low noise amplifier (LNA) is implemented by using 90nm RF CMOS technology. The designed LNA achieves high flat band gain (S21) and low noise figure (NF) in the frequency of interest. The proposed LNA operates in the frequency range of 3GHz to 8GHz. In this work, wide band matching is achieved by designing common gate configuration at the input stage. The current reuse and noise cancellation techniques are introduced to improve flat band gain and minimize both noise figure and power consumption. The noise figure is improved by cancelling dominant noise so

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4

Zhu, Hong Yu, Chao Wang, Nai Chang Yuan, Jing Jian Huang, and Qing Ping Wang. "Multi-domain blind source separation in-band full-duplex technique considering RF impairments." Journal of Physics: Conference Series 2625, no. 1 (2023): 012060. http://dx.doi.org/10.1088/1742-6596/2625/1/012060.

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Abstract In-band full-duplex (IBFD) technology can potentially improve spectrum efficiency compared to half-duplex technology. The cancellation of the self-interference (SI) signal is the key to implementing the IBFD system to achieve accurate detection of the signal of interest. In this work, we fully account for the effect of IQ imbalance, phase noise (PN), additional Gaussian white noise (AWGN), and the nonlinear caused by the RF impairments of power amplifier, and adopt the method of canceling SI signal combined with the propagation, analog, and digital domain to cancel the SI signal, but

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5

Hwang, Yuh-Shyan, San-Fu Wang, and Jiann-Jong Chen. "A differential multi-band CMOS low noise amplifier with noise cancellation and interference rejection." AEU - International Journal of Electronics and Communications 64, no. 10 (2010): 897–903. http://dx.doi.org/10.1016/j.aeue.2009.07.003.

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6

Kim, Hyoung Soo, Sungho Beck, Kwanyeob Chae, Kyutae Lim, Joy Laskar, and Manos M. Tentzeris. "A Frequency Selective Feedback Receiver for Multi‐Bands Operation." Microwave and Optical Technology Letters 60, no. 10 (2018): 2584–94. http://dx.doi.org/10.1002/mop.31401.

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AbstractFor a frequency‐division duplex (FDD) wide‐band code‐division multiple‐access (WCDMA) system, transmit (TX) signal leakage at the receiver input degrades the receiver performance. To cancel this TX leakage, a frequency selective feedback was previously proposed, but it had an unpredictable feedback loop characteristic due to the uncertainty of the duplexer impedance. This paper presents a new method to achieve TX leakage cancellation regardless of the duplexer impedance. In addition, a local oscillator (LO) phase shift technique is proposed to apply this method for multi‐band. A receiv

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Pham, Dang-Kièn Germain, Patricia Desgreys, Patrick Loumeau, Tim Ridgers та Guillaume Monnerie. "High-level design of general multi-stage noise band cancellation $$\Upsigma\Updelta$$ Σ Δ ADC optimized for nonlinearly distorted signals". Analog Integrated Circuits and Signal Processing 77, № 2 (2013): 235–45. http://dx.doi.org/10.1007/s10470-013-0148-1.

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8

Lee, Sang-Rok, Joon-Hyung Kim, Min-Seok Baek, and Choul-Young Kim. "A Ku-Band Fully Differential Low-Power High-Input P1dB Low-Noise Amplifier." Nanomaterials 14, no. 23 (2024): 1913. http://dx.doi.org/10.3390/nano14231913.

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This paper introduces a Ku-band fully differential low-power high-input 1 dB compression point (P1dB) low-noise amplifier (LNA). A fully differential structure is employed to enhance the input P1dB, common-mode noise rejection, and second harmonic cancellation. The first stage adopts large transistors and is optimized for power consumption and noise figure (NF). The output stage is designed with class AB bias, resulting in improved P1dB, power consumption, and linearity. The proposed two-stage fully differential common-source (CS) LNA was implemented using 65 nm bulk complementary metal oxide

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9

Eghtesadi, Minoo, Mohammad Reza Mosavi, and Egidio Ragonese. "A Pseudo-Differential LNA with Noise Improvement Techniques for Concurrent Multi-Band GNSS Applications." Electronics 13, no. 14 (2024): 2805. http://dx.doi.org/10.3390/electronics13142805.

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A low-noise amplifier (LNA) design with the operation of concurrent dual-band for Global Navigation Satellite System (GNSS) receivers with single channel is presented in this work. This LNA structure has an inductively degenerated cascode architecture and is pseudo-differential, operating at two frequencies simultaneously (1.2 GHz and 1.57 GHz). Two noise reduction/cancellation techniques, using load capacitor and feedforward path, respectively, are proposed resulting in an excellent improvement in the noise figure (NF). The input matching circuit uses both series and parallel resonant compone

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10

A. Naman, Hala, and A. E. Abdelkareem. "Communication Channel Influence on Self Interference Cancellation for In-Band Full-Duplex Underwater Acoustic Systems." Iraqi Journal of Information and Communication Technology 6, no. 2 (2023): 1–16. http://dx.doi.org/10.31987/ijict.6.2.210.

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This paper employs a self-interference cancellation (IBFD-UWA) system for shallow-water acoustic channels by depending on the model of communication channel for SI cancellation, which is based on geometry to accommodate any possible changes in the underwater environment. UWA channels have propagation characteristics based on the configurations of straight and multi-direction mirrors between a transmitter and a receiver. This propagation at the node itself and between the two nodes to transfer information between the nodes operating in the IBFD mode, orthogonal frequency division multiplex (OFD

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11

Chen, Xin Han, Shuxiang Song, and Mingcan Cen. "Design and Analysis of a Broadband Current-Mode CMOS Direct-Conversion Receiver Frond-End Circuit." Journal of Circuits, Systems and Computers 28, no. 10 (2019): 1950169. http://dx.doi.org/10.1142/s021812661950169x.

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A broadband (0.8–5[Formula: see text]GHz) CMOS current-mode direct-conversion receiver has been integrated in a 0.18-[Formula: see text]m CMOS process. The proposed receiver front-end features a broadband active-balun low-noise transconductance amplifier (LNTA) driving a current-mode passive mixer terminated by a low-input-impedance transimpedance amplifier (TIA). The receiver chain has improved robustness to out-of-band interference, conversion gain and outstanding linearity. With the technique of noise and distortion cancellation which performs a better input impedance matching, we employ a

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12

Luo, Kai, Zhongliang Deng, Xiaobin Guo, Ziyao Ma, and Jingrong Liu. "High-Precision Ranging Method of 5G NR Co-Band PRS in Industrial Internet Scenarios." Applied Sciences 13, no. 18 (2023): 10302. http://dx.doi.org/10.3390/app131810302.

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To meet the demand for high-precision positioning in commercial industrial internet scenarios, 3GPP introduced the Positioning Reference Signal (PRS) in the 5G standard. However, the PRS signal occupies specific time and frequency resources for transmission in 5G systems, limiting the efficiency of communication signal transmission to some extent. In this regard, we propose a 5G NR Co-Band PRS model that allows for the superimposition of PRS signals on communication signals in a low-power manner, without requiring additional communication resources or causing too much interference to the commu

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13

Ko, Goo-Han, Seung-Jin Moon, Seong-Hoon Kim, Jeong-Geun Kim, and Donghyun Baek. "Fully Integrated 24-GHz 1TX-2RX Transceiver for Compact FMCW Radar Applications." Sensors 24, no. 5 (2024): 1460. http://dx.doi.org/10.3390/s24051460.

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A fully integrated 24-GHz radar transceiver with one transmitter (TX) and two receivers (RXs) for compact frequency modulated continuous wave (FMCW) radar applications is here presented. The FMCW synthesizer was realized using a fractional-N phase-locked loop (PLL) and programmable chirp generator, which are completely integrated in the proposed transceiver. The measured output phase noise of the synthesizer is −80 dBc/Hz at 100 kHz offset. The TX consists of a three-bit bridged t-type attenuator for gain control, a two-stage drive amplifier (DA) and a one-stage power amplifier (PA). The TX ch

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14

Le, Anh Tuyen, Le Chung Tran, Xiaojing Huang, and Yingjie Jay Guo. "Analog Least Mean Square Loop for Self-Interference Cancellation: A Practical Perspective." Sensors 20, no. 1 (2020): 270. http://dx.doi.org/10.3390/s20010270.

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Self-interference (SI) is the key issue that prevents in-band full-duplex (IBFD) communications from being practical. Analog multi-tap adaptive filter is an efficient structure to cancel SI since it can capture the nonlinear components and noise in the transmitted signal. Analog least mean square (ALMS) loop is a simple adaptive filter that can be implemented by purely analog means to sufficiently mitigate SI. Comprehensive analyses on the behaviors of the ALMS loop have been published in the literature. This paper proposes a practical structure and presents an implementation of the ALMS loop.

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15

KUNISHIMA, H., H. KOGA, O. MUTA, and Y. AKAIWA. "Joint Use of Adaptive Equalization and Cyclic Noise Cancellation for Band-Limited OQAM Based Multi-Carrier Transmission in Power-Line Communication Systems." IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E91-A, no. 11 (2008): 3112–20. http://dx.doi.org/10.1093/ietfec/e91-a.11.3112.

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16

Kim, J., L. Udpa, and S. Udpa. "Multi-stage adaptive noise cancellation for ultrasonic NDE." NDT & E International 34, no. 5 (2001): 319–28. http://dx.doi.org/10.1016/s0963-8695(00)00046-3.

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17

Lv, Risheng, Weiping Chen, and Xiaowei Liu. "A High-Dynamic-Range Switched-Capacitor Sigma-Delta ADC for Digital Micromechanical Vibration Gyroscopes." Micromachines 9, no. 8 (2018): 372. http://dx.doi.org/10.3390/mi9080372.

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This paper presents a multi-stage noise shaping (MASH) switched-capacitor (SC) sigma-delta (ΣΔ) analog-to-digital converter (ADC) composed of an analog modulator with an on-chip noise cancellation logic and a reconfigurable digital decimator for MEMS digital gyroscope applications. A MASH 2-1-1 structure is employed to guarantee an absolutely stable modulation system. Based on the over-sampling and noise-shaping techniques, the core modulator architecture is a cascade of three single-loop stages containing feedback paths for systematic optimization to avoid deterioration in conversion accuracy

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18

Xu, Shiyun, Changjun He, Bosong Yan, and Mingjiang Wang. "A Multi-Stage Acoustic Echo Cancellation Model Based on Adaptive Filters and Deep Neural Networks." Electronics 12, no. 15 (2023): 3258. http://dx.doi.org/10.3390/electronics12153258.

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The presence of a large amount of echoes significantly impairs the quality and intelligibility of speech during communication. To address this issue, numerous studies and models have been conducted to cancel echo. In this study, we propose a multi-stage acoustic echo cancellation model that utilizes an adaptive filter and a deep neural network. Our model consists of two parts: the Speex algorithm for canceling linear echo, and the multi-scale time-frequency UNet (MSTFUNet) for further echo cancellation. The Speex algorithm takes the far-end reference speech and the near-end microphone signal a

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19

Gunnam, Leenendra Chowdary, Guo‐Ming Sung, Lei‐Wen Weng, and Te‐Chia Fan. "2‐1 Switched‐current multi‐stage noise‐shaping delta–sigma modulator with a digital noise‐cancellation circuit." IET Circuits, Devices & Systems 13, no. 3 (2019): 327–36. http://dx.doi.org/10.1049/iet-cds.2018.5025.

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20

Wen, Jyh-Horng, and Ho-Lung Hung. "Performance analysis of multi-stage interference cancellation for ultra-wide band multiple-access communication systems." Wireless Communications and Mobile Computing 12, no. 15 (2011): 1371–80. http://dx.doi.org/10.1002/wcm.1068.

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21

Ijaz, Khalid, Muhammad Adnan, Waqas Tariq Toor, et al. "A New Noise Shaping Approach for Sigma-Delta Modulators Using Two-Stage Feed-Forward Delays and Hybrid MASH-EFM." Electronics 12, no. 3 (2023): 740. http://dx.doi.org/10.3390/electronics12030740.

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Sigma-delta modulators use a noise-shaping technique to curtail the noise power in the band of interest during digital-to-analog conversion. Error feedback modulator employs an efficient noise transfer function for time varying inputs than any other sigma-delta modulators. However, the efficiency of the conventional noise transfer function degrades and the quantizer saturation issue provokes when the input signal reaches to full scale. This work proposes a new noise transfer function which is a combination of transfer functions of two-stage Feed-forward delays and a novel Hybrid multi-stage no

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22

Han, Fang, Xuzhi Liu, Chao Wang, et al. "A Multi-Band LNA Covering 17–38 GHz in 45 nm CMOS SOI." Electronics 11, no. 19 (2022): 3255. http://dx.doi.org/10.3390/electronics11193255.

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This paper presents a multi-band low-noise amplifier (LNA) in the 45-nm CMOS silicon-on-insulator (SOI) process. The LNA consists of three stages, with the differential cascode amplifier as the core structure. The first stage is mainly responsible for input matching to ensure favourable noise characteristics and bandwidth, while the subsequent stages increase the gain. Moreover, the LNA utilizes baluns for input/output and interstage impedance matching. Switch capacitances are added to switch the three operating bands of the LNA, which cover 17–38 GHz overall. Measurement results show that the

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23

BELEN, Aysu. "DESIGN OPTIMIZATION OF LOW NOISE AMPLIFIER FOR 900MHZ GSM BAND APPLICATIONS USING GREY WOLF ALGORITHM." Mühendislik Bilimleri ve Tasarım Dergisi 11, no. 3 (2023): 873–79. http://dx.doi.org/10.21923/jesd.1246889.

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In this work, the design of a high-performance single-stage Low Noise Amplifier (LNA) for GSM applications is taken into consideration. LNA design is one of the key stages of a wireless communication system due to its dominance over the whole system's noise figure performance. Although it is possible to achieve a very high gain and low noise figure with the usage of multi-stage transistors, such designs would also have a high complexity and manufacturing cost. The main aim of this work is to propose a single transistor LNA design for GSM application with a gain level of 14.3 dB, return loss le

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24

Majid, Takbiri, Zarei Hadi, and Bijari Abolfazl. "A New CMOS Fully Differential Low Noise Amplifier for Wideband Applications." TELKOMNIKA Telecommunication, Computing, Electronics and Control 16, no. 3 (2018): 1083–91. https://doi.org/10.12928/TELKOMNIKA.v16i3.7630.

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In this paper, a multi-stage fully differential low noise amplifier (LNA) has been presented for wideband applications. A common-gate input stage is used to improve the input impedance matching and linearity. A common-source stage is also used as the second stage to enhance gain and reduce noise. A shunt-shunt feedback is employed to extend bandwidth and enhance linearity. The proposed low noise amplifier has been designed and simulated using RF-TSMC 0.18 μm CMOS process technology. In frequency band of 3.5-7.5 GHz, this amplifier has a flat power gain (S21) of 16.5 ± 1.5 dB, low noi

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25

Zhang, Yu, Dan Zhang, Zhen Han, and Peng Jiang. "A Joint Denoising Learning Model for Weight Update Space–Time Diversity Method." Remote Sensing 14, no. 10 (2022): 2430. http://dx.doi.org/10.3390/rs14102430.

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Space–time diversity (STD) has been widely applied in underwater acoustic (UWA) communication due to its exceptional anti-multipath performance. However, underwater noise can seriously affect the processing results of STD. The conventional filtering algorithms cannot deal with the nonlinear components of underwater noise and may not work well for complex-type signals. This study proposes an improved STD method with a joint noise-reduction learning model for the above issues. We construct a noise-reduction learning model dedicated to complex-type UWA signals in the first stage. Complex-type fea

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26

Honcharov, K. V., and R. V. Rybalka. "Multi-Valued Automatic Cab Signalling System Based on the CDMA Technology." Science and Transport Progress, no. 6(96) (December 20, 2021): 14–23. http://dx.doi.org/10.15802/stp2021/258171.

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Purpose. The work is aimed at the development of principles for the construction of multi-valued automatic cab signalling system (ACS) using the wide-band pseudorandom signals. Methodology. An analysis of existing ACS systems and modern telecommunication technologies has been performed to achieve the stated purpose. The multi-valued automatic cab signalling system CDMA-ACS has been proposed. The mentioned system utilizes wide-band pseudo-noise signals to transmit commands. System parameters: frequency band – 155...395 Hz, pseudorandom codes – 16-bit Walsh codes, spectrum spreading factor – 16,

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27

TAMURA, Yu, Toru IDO, and Kenji TANIGUCHI. "A Multi-Stage Second Order Dynamic Element Matching with In-Band Mismatch Noise Reduction Enhancement." IEICE Transactions on Electronics E94-C, no. 8 (2011): 1340–43. http://dx.doi.org/10.1587/transele.e94.c.1340.

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28

Song, Ickhyun, Gyungtae Ryu, Seung Hwan Jung, John D. Cressler, and Moon-Kyu Cho. "Wideband SiGe-HBT Low-Noise Amplifier with Resistive Feedback and Shunt Peaking." Sensors 23, no. 15 (2023): 6745. http://dx.doi.org/10.3390/s23156745.

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In this work, the design of a wideband low-noise amplifier (LNA) using a resistive feedback network is proposed for potential multi-band sensing, communication, and radar applications. For achieving wide operational bandwidth and flat in-band characteristics simultaneously, the proposed LNA employs a variety of circuit design techniques, including a voltage–current (shunt–shunt) negative feedback configuration, inductive emitter degeneration, a main branch with an added cascode stage, and the shunt-peaking technique. The use of a feedback network and emitter degeneration provides broadened tra

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29

Rügamer, Alexander, Cécile Mongrédien, Santiago Urquijo, and Günter Rohmer. "Theoretical Analysis of Overlay GNSS Receiver Effects." International Journal of Embedded and Real-Time Communication Systems 3, no. 3 (2012): 38–53. http://dx.doi.org/10.4018/jertcs.2012070103.

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Having given a short overview of GNSS signals and state-of-the-art multi-band front-end architectures, this paper presents a novel contribution to efficient multi-band GNSS reception. A general overlay based front-end architecture is introduced that enables the joint reception of two signals broadcast in separate frequency bands, sharing just one common baseband stage. The consequences of this overlay are analyzed for both signal and noise components. Signal overlay is shown to have a negligible impact on signal quality. It is shown that the noise floor superposition results in non-negligible

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30

K., V. Honcharov, and V. Rybalka R. "Multi-Valued Automatic Cab Signalling System Based on the CDMA Technology." Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, no. 6(96) (December 20, 2021): 14–23. https://doi.org/10.15802/stp2021/258171.

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<strong>Purpose</strong>. The work is aimed at the development of principles for the construction of multi-valued automatic cab signalling system (ACS) using the wide-band pseudorandom signals. <strong>Methodology</strong>. An analysis of existing ACS systems and modern telecommunication technologies has been performed to achieve the stated purpose. The multi-valued automatic cab signalling system CDMA-ACS has been proposed. The mentioned system utilizes wide-band pseudo-noise signals to transmit commands. System parameters: frequency band – 155...395 Hz, pseudorandom codes –

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31

Delis, Athanasios, Despoina-Polyxeni Georgiou, Ioannis Stamelos, Eleni Alexandratou та Konstantinos Politopoulos. "A Novel Multi-Feedback Differential Filter Instrumentation Amplifier for Βiosignals Acquisition Applications". Electronics 14, № 1 (2024): 95. https://doi.org/10.3390/electronics14010095.

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Efficient filtering in biosignals acquisition is challenging. The resistance of the sources exhibits inter- and intra-subject variability or is unknown; thus, using passive filters before the first amplification stage is problematic. Conversely, filtering after amplification does not effectively eliminate the amplified electrical noise, main’s interference, and the artifacts. In this context, the design and utilization of filters in the analog front end of biosensors, in conjunction with the first amplification stage, is not common but offers substantial advantages. In this study, the design o

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32

Hoffmann, C., and P. Russer. "A low-noise high dynamic-range time-domain EMI measurement system for CISPR Band E." Advances in Radio Science 9 (August 1, 2011): 309–15. http://dx.doi.org/10.5194/ars-9-309-2011.

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Abstract. In this paper, a broadband time-domain EMI measurement system for measurements from 9 kHz to 18 GHz is presented that allows for compliant EMI measurements in CISPR Band E. Combining ultra-fast analog-to-digital-conversion and real-time digital signal processing on a field-programmable-gate-array (FPGA) with ultra-broadband multi-stage down-conversion, scan times can be reduced by several orders of magnitude in comparison to a traditional heterodyne EMI-receiver. The ultra-low system noise floor of 6–8 dB and the real-time spectrogram allow for the characterisation of the time-behavi

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33

Sampath Kumar, V., and Kartik Upreti. "Novel low noise amplifier approach for deep brain stimulation." Journal of Physics: Conference Series 2570, no. 1 (2023): 012033. http://dx.doi.org/10.1088/1742-6596/2570/1/012033.

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Abstract This paper presents an analysis for a multi-stage Low Noise Amplifier (LNA) for application on deep brain stimulation. A low noise amplifier (LNA) with high gain, moderate bandwidth and reduced noise is designed and simulated using LT Spice and PTM BSIM4 CMOS models. The novel LNA circuit topology is proposed which uses a cascaded style to improve mid-band gain of an LNA. The proposed LNA achieves a gain margin which ranges between 60-67 (dB), 2X times; Phase Margin which ranges between 145 to 154 (deg), 3X times; Gain which ranges between 66 to 75 (dB), 2X times and bandwidth from kH

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Sha, Yun Dong, Xian Zhi Cui, Feng Tong Zhao, and Xiao Chi Luan. "Investigation into the Noise Characteristics Based on Rotating Instabilities Mechanism in a Multi-Stage Axial Compressor." Applied Mechanics and Materials 160 (March 2012): 366–72. http://dx.doi.org/10.4028/www.scientific.net/amm.160.366.

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Rotating instability can be observed in the tip flow region of axial compressor stage while stable operation. In order to investigate the noise characteristics in a multi-stage axial compressor, the noise inner compressor casing is measured simultaneously with the vibration of the rotor blades on a high pressure compressor component rig testing. An azimuthal mode analysis and theoretical formulation of the rotating source mechanism are applied to the unsteady pressure at the casing wall immediately upstream of the inlet plane of the rotor. It is shown that RIs might be described by a group of

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35

Rahman, Md Habibur, Mohammad Abrar Shakil Sejan, Seung-Geun Yoo, Min-A. Kim, Young-Hwan You, and Hyoung-Kyu Song. "Multi-User Joint Detection Using Bi-Directional Deep Neural Network Framework in NOMA-OFDM System." Sensors 22, no. 18 (2022): 6994. http://dx.doi.org/10.3390/s22186994.

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Non-orthogonal multiple access (NOMA) has great potential to implement the fifth-generation (5G) requirements of wireless communication. For a NOMA traditional detection method, successive interference cancellation (SIC) plays a vital role at the receiver side for both uplink and downlink transmission. Due to the complex multipath channel environment and prorogation of error problems, the traditional SIC method has a limited performance. To overcome the limitation of traditional detection methods, the deep-learning method has an advantage for the highly efficient tool. In this paper, a deep ne

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Zhu, Y., Y. Chen, J. H. Yu, et al. "System-on-chip approach microwave imaging reflectometer on DIII-D tokamak." Review of Scientific Instruments 93, no. 11 (2022): 113509. http://dx.doi.org/10.1063/5.0099170.

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System-on-chip millimeter wave integrated circuit technology is used on the two-dimensional millimeter-wave imaging reflectometer (MIR) upgrade for density fluctuation imaging on the DIII-D tokamak fusion plasma. Customized CMOS chips have been successfully developed for the transmitter module and receiver module array, covering the 55–75 GHz working band. The transmitter module has the capability of simultaneously launching eight tunable probe frequencies (>0 dBm output power each). The receiver enclosure contains 12 receiver modules in two vertical lines. The quasi-optical local oscillato

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Kumar Vishnoi, Manoj, and Satya Sai Srikant. "Design Considerations of Reconfigurable CMOS Mixers for Multi-Standard Communication Receiver Systems." International Journal of Reconfigurable and Embedded Systems (IJRES) 7, no. 3 (2018): 160. http://dx.doi.org/10.11591/ijres.v7.i3.pp160-166.

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This paper has been carried out the study of reconfigurable wide-band mixers that can do the frequency conversion and gain variation standards with low noise and high linearity used in multi-mode and multi-standard receivers. Over the last few years reconfigurability has become very popular in adopting technology to meet the wideband wireless communication specifications that is compatible with multi-standards like GPS (1.57 GHz), WLAN (2.4 GHz - 5.9 GHz), Bluetooth (2.402 – 2.483 GHz) and ZigBee (0.784 - 0.915 GHz) in low power consumption environment. The reconfigurability can be achieved be

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Kumar Vishnoi, Manoj, and Satya Sai Srikant. "Design Considerations of Reconfigurable CMOS Mixers for Multi-Standard Communication Receiver Systems." International Journal of Reconfigurable and Embedded Systems (IJRES) 7, no. 3 (2018): 166. http://dx.doi.org/10.11591/ijres.v7.i3.pp166-172.

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This paper has been carried out the study of reconfigurable wide-band mixers that can do the frequency conversion and gain variation standards with low noise and high linearity used in multi-mode and multi-standard receivers. Over the last few years reconfigurability has become very popular in adopting technology to meet the wideband wireless communication specifications that is compatible with multi-standards like GPS (1.57 GHz), WLAN (2.4 GHz - 5.9 GHz), Bluetooth (2.402 – 2.483 GHz) and ZigBee (0.784 - 0.915 GHz) in low power consumption environment. The reconfigurability can be achieved be

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Manoj, Kumar Vishnoi, and Sai Srikant Satya. "Design Considerations of Reconfigurable CMOS Mixers for Multi-standard Communication Receiver Systems." International Journal of Reconfigurable and Embedded Systems 7, no. 3 (2018): 166–72. https://doi.org/10.11591/ijres.v7.i3.pp166-172.

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This paper has been carried out the study of reconfigurable wide-band mixers that can do the frequency conversion and gain variation standards with low noise and high linearity used in multi-mode and multi-standard receivers. Over the last few years reconfigurability has become very popular in adopting technology to meet the wideband wireless communication specifications that is compatible with multi-standards like GPS (1.57 GHz), WLAN (2.4 GHz-5.9 GHz), Bluetooth (2.402–2.483 GHz) and ZigBee (0.784-0.915 GHz) in low power consumption environment. The reconfigurability can be achieved be

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Mirza, Jawad, Salman Ghafoor, Ammar Armghan, et al. "Performance Enhancement of Ytterbium-Doped Fiber Amplifier Employing a Dual-Stage In-Band Asymmetrical Pumping." Micromachines 13, no. 9 (2022): 1488. http://dx.doi.org/10.3390/mi13091488.

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The performance of doped fiber amplifiers can be enhanced significantly with the help of multi-stage pumping technique provided that various critical parameters of pumps including their optical power and wavelength are optimized. We report the performance enhancement of a ytterbium doped fiber amplifier (YDFA) for a 1.02–1.08 μm spectral region with an optimized design based on a novel dual-stage in-band asymmetrical pumping scheme. By accurately adjusting the optical power and wavelength of pumps in both the stages, a record peak gain of around 62.5 dB and output power of 4.5 W are achieved f

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Wang, Haili, Muye Zhang, Linghao Zhang, Xiaoxiao Zhu, and Qixin Cao. "Real-Time Hand Gesture Recognition in Clinical Settings: A Low-Power FMCW Radar Integrated Sensor System with Multiple Feature Fusion." Sensors 25, no. 13 (2025): 4169. https://doi.org/10.3390/s25134169.

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Robust and efficient contactless human–machine interaction is critical for integrated sensor systems in clinical settings, demanding low-power solutions adaptable to edge computing platforms. This paper presents a real-time hand gesture recognition system using a low-power Frequency-Modulated Continuous Wave (FMCW) radar sensor, featuring a novel Multiple Feature Fusion (MFF) framework optimized for deployment on edge devices. The proposed system integrates velocity profiles, angular variations, and spatial-temporal features through a dual-stage processing architecture: an adaptive energy thre

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Lee, Hyunkyu, and Sanggeun Jeon. "A Q-Band CMOS Image-Rejection Receiver Integrated with LO and Frequency Dividers." Electronics 12, no. 14 (2023): 3069. http://dx.doi.org/10.3390/electronics12143069.

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This paper presents a Q-band image-rejection receiver using a 65 nm CMOS technology. For a high image-rejection ratio (IMRR), the Q-band receiver employs the Hartley architecture which consists of a Q-band low-noise amplifier, two down-conversion mixers, a 90° hybrid coupler, and two IF baluns. In addition, a Q-band fundamental voltage-controlled oscillator (VCO) and a frequency divider chain divided by 256 are integrated into the receiver for LO. A charge injection technique is employed in the mixers to reduce the DC power while maintaining a high conversion gain and linearity. The VCO adopts

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Han, Jingyu, Yu Jiang, Guiliang Guo, and Xu Cheng. "A Reconfigurable Analog Baseband Circuitry for LFMCW RADAR Receivers in 130-nm SiGe BiCMOS Process." Electronics 9, no. 5 (2020): 831. http://dx.doi.org/10.3390/electronics9050831.

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A highly reconfigurable open-loop analog baseband circuitry with programmable gain, bandwidth and filter order are proposed for integrated linear frequency modulated continuous wave (LFMCW) radar receivers in this paper. This analog baseband chain allocates noise, gain and channel selection specifications to different stages, for the sake of noise and linearity tradeoffs, by introducing a multi-stage open-loop cascaded amplifier/filter topology. The topology includes a course gain tuning pre-amplifier, a folded Gilbert variable gain amplifier (VGA) with a symmetrical dB-linear voltage generato

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A. S.,, Anand Swamy, Mamatha A. S.,, Shylashree N., and V. Sridhar. "Lossless Compression of Hyperspectral Imagery by Assimilating Decorrelation and Pre-processing with Efficient Displaying using Multi Scale HDR Approach." WSEAS TRANSACTIONS ON SIGNAL PROCESSING 18 (May 18, 2022): 77–88. http://dx.doi.org/10.37394/232014.2022.18.11.

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The instinctive essence of the Hyperspectral imagery cube is its immense information having both spatial and spectral correlation. In the interest of reducing the storage and bandwidth requisites, an effective lossless Hyperspectral compression system has been proposed. The imagery is enforced to preprocessing stage prior to decorrelation. Preprocessing stage comprises band normalization and band ordering techniques. A new technique named Greedy heap sorting is addressed to sort the bands. The proposed strategy accords with a Compression ratio (CR) of 8.12 and bits per pixel (bpp) of 1.67. The

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Zegar Chouki. "Comparative Study on Noisy Speech Preprocessing Algorithms." Journal of Electrical Systems 20, no. 3 (2024): 2317–35. http://dx.doi.org/10.52783/jes.4067.

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Speech Enhancement and noise reduction have wide applications in speech processing. They are often employed as pre-processing stage in various applications. The work to be presented in this paper is denoising a single-channel speech signal at the presence of a highly non-stationary background noise in order to improve the perceptible quality and intelligibility of the speech. Real world noise is mostly highly non-stationary and does not affect the speech signal uniformly over the spectrum. This paper investigates various Discrete Fourier Transform-based algorithms as single-channel pre-process

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Chen, Yaogang, Qian Sun, and Jun Hu. "Quantitatively Estimating of InSAR Decorrelation Based on Landsat-Derived NDVI." Remote Sensing 13, no. 13 (2021): 2440. http://dx.doi.org/10.3390/rs13132440.

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As a by-product of Interferometric Synthetic Aperture Radar (SAR, InSAR) technique, interferometric coherence is a measure of the decorrelation noise for InSAR observation, where the lower the coherence value, the more serious the decorrelation noise. In the densely vegetated area, the coherence value could be too low to obtain any valuable signals, leading to the degradation of InSAR performance and the possible waste of expensive SAR data. Normalized Difference Vegetation Index (NDVI) value is a measure of the vegetation coverage and can be estimated from the freely available optical satelli

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Linh, Ta Phuong, Journet Bernard, and Bach Gia Duong. "Research, design and fabrication of a microwave active filter for nanosatellite's receiver front-ends at s-band." TELKOMNIKA Telecommunication, Computing, Electronics and Control 17, no. 1 (2019): 23–31. https://doi.org/10.12928/TELKOMNIKA.v17i1.10079.

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In satellite technology, the communication between space segment and ground segment plays a vital role in the success of the mission. This paper is targeted at study, design and fabrication of a microwave active filter for the receiver front-ends using coupled line filter structure, which can be applied to the nanosatellite’s communication subsystem. The whole active filter module is a combination of a microstrip bandpass filter and a preceding two-stage wideband low noise amplifier using FET devices. The proposed module operates in the frequency range of 2-2.4 GHz, which can be divided

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Xu, Leijun, Lei Huang, Yujie Ma, Xue Bai, and Jianfeng Chen. "CMOS dual-band terahertz on-chip antenna array and detector design." Semiconductor Science and Technology 39, no. 12 (2024): 125018. http://dx.doi.org/10.1088/1361-6641/ad9172.

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Abstract In this paper, in response to the limitations of conventional single-pixel terahertz (THz) detectors in detecting a single frequency band and having a low imaging resolution. A dual-band high responsivity (Rv) array detector scheme is proposed. Includes dual-band high-gain on-chip antenna, matching circuit, dual-band self-mixing receiver circuit and integrated voltage amplifier. The proposed on-chip antenna uses a multi-loop nested design based on the octagonal antenna to realize the dual-band high gain characteristics. In addition, the use of ‘cross-loop’ metal modules as ground plan

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Yao, Shengqing, Yanfang Zhang, Zhizhong Xiao, Jiaojiao Ni, and Song Ding. "A real-time fabric defect inspection based on improved multi-scale Gabor filter." Journal of Computational Methods in Sciences and Engineering 25, no. 1 (2024): 211–22. https://doi.org/10.1177/14727978241300076.

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This paper introduces a hybrid technique designed to identify fabric defects in the early stages of textile manufacturing production. Manual detection of fabric abnormalities is a challenging task, prompting the development of an intelligent system that leverages techniques such as multi-scale Gabor transform and gray level co-occurrence matrix (GGCM) for fabric defect diagnosis. In the preprocessing phase, the input image undergoes down-sampling and quantization. Subsequently, efficient noise removal is achieved using a median filter, followed by the extraction of the region of interest throu

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Su, Jiahui, Deyin Xu, Lu Qiu, Zhiping Xu, Lixiong Lin, and Jiachun Zheng. "A High-Accuracy Underwater Object Detection Algorithm for Synthetic Aperture Sonar Images." Remote Sensing 17, no. 13 (2025): 2112. https://doi.org/10.3390/rs17132112.

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Underwater object detection with Synthetic Aperture Sonar (SAS) images faces many problems, including low contrast, blurred edges, high-frequency noise, and missed small objects. To improve these problems, this paper proposes a high-accuracy underwater object detection algorithm for SAS images, named the HAUOD algorithm. First, considering SAS image characteristics, a sonar preprocessing module is designed to enhance the signal-to-noise ratio of object features. This module incorporates three-stage processing for image quality optimization, and the three stages include collaborative adaptive C

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