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1

Chi, J. C. L., J. A. Lester, Y. Hwang, P. D. Chow, and M. Y. Huang. "A 1-W high-efficiency Q-band MMIC power amplifier." IEEE Microwave and Guided Wave Letters 5, no. 1 (1995): 21–23. http://dx.doi.org/10.1109/75.382372.

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2

Kim, Mun-Ho, Jung-Gil Yang, and Kyoung-Hoon Yang. "High-Performance Q-Band MMIC Phase Shifters Using InGaAs PIN Diodes." Journal of electromagnetic engineering and science 9, no. 3 (2009): 159–63. http://dx.doi.org/10.5515/jkiees.2009.9.3.159.

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3

Yu, M., R. H. Walden, A. E. Schmitz, and M. Lui. "Ka/Q-band doubly balanced MMIC mixers with low LO power." IEEE Microwave and Guided Wave Letters 10, no. 10 (2000): 424–26. http://dx.doi.org/10.1109/75.877233.

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4

Ryu, Keun-Kwan, and Sung-Chan Kim. "A Design of MMIC Mixer for I/Q Demodulator of Non-contact Near Field Microwave Probing System." Journal of the Korean Institute of Information and Communication Engineering 16, no. 5 (2012): 1023–28. http://dx.doi.org/10.6109/jkiice.2012.16.5.1023.

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5

Resca, Davide, Rafael Cignani, Corrado Florian, Andrea Biondi, and Francesco Scappaviva. "A Q/Ku-K band MMIC double-balanced subharmonic diode ring mixer for satellite communications in GaAs pHEMT technology." International Journal of Microwave and Wireless Technologies 7, no. 2 (2014): 107–13. http://dx.doi.org/10.1017/s1759078714000695.

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A MMIC double-balanced subharmonic diode ring mixer was designed for broadband satellite communications exploiting a GaAs pHEMT process. The circuit implements the frequency conversion from Q (43.5–50 GHz) to Ku-K band (17–21.5 GHz). Besides the RF, LO, and IF baluns, the MMIC integrates a buffer amplifier for the local oscillator signal, which is designed between X and Ku bands (11–16.5 GHz), due to the subharmonic operation. The mixer measured conversion loss is between 8 and 12 dB along the bandwidth, with an LO power of 9 dBm. The input p1 dB and IP3 are 2 and 15 dBm, respectively. The bal
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6

Lam, W., M. Matloubian, A. Kurdoghlian, et al. "High-efficiency InP-based HEMT MMIC power amplifier for Q-band applications." IEEE Microwave and Guided Wave Letters 3, no. 11 (1993): 420–22. http://dx.doi.org/10.1109/75.248519.

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7

Dan, An, Rhee Eung-Ho, Rhee Jin-Koo, and Kim Sam-Dong. "Design and fabrication of a wideband MMIC Low-Noise Amplifier using Q-matching." Journal of the Korean Physical Society 37, no. 6 (2000): 837. http://dx.doi.org/10.3938/jkps.37.837.

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8

Youngwoo Kwon, Kyungjin Kim, E. A. Sovero, and D. S. Deakin. "Watt-level Ka- and Q-band MMIC power amplifiers operating at low voltages." IEEE Transactions on Microwave Theory and Techniques 48, no. 6 (2000): 891–97. http://dx.doi.org/10.1109/22.846714.

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9

Xu, Zhengbin, Jie Xu, Yinjie Cui, Jian Guo, and Cheng Qian. "A low-cost W-band SPDT switch with Q-MMIC concept using quartz substrate." Journal of Electromagnetic Waves and Applications 32, no. 4 (2017): 428–38. http://dx.doi.org/10.1080/09205071.2017.1394915.

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10

Kim, M., J. G. Yang, and K. Yang. "Switched transmission-line type Q-band 4-bit MMIC phase shifter using InGaAs pin diodes." Electronics Letters 46, no. 3 (2010): 219. http://dx.doi.org/10.1049/el.2010.2007.

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11

Kamogawa, K., K. Nishikawa, I. Toyoda, T. Tokumitsu, and M. Tanaka. "A novel high-Q and wide-frequency-range inductor using Si 3-D MMIC technology." IEEE Microwave and Guided Wave Letters 9, no. 1 (1999): 16–18. http://dx.doi.org/10.1109/75.752110.

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12

Palombini, Diego, Maciej Jankowski, and Ernesto Limiti. "Downconverting Module Architectures for High Performance Multipixel Cameras." International Journal of Microwave Science and Technology 2013 (April 15, 2013): 1–8. http://dx.doi.org/10.1155/2013/586158.

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Multipixel cameras represent an emerging topology for arrays receivers, improving speed and accuracy of both security scanning systems and radioastronomical sky surveys by means of a matrix of phased elements. Difficulties in the generation and proper distribution to each pixel of the local oscillator signal still limit their use to frequency ranges below a few GHz or at least seriously affect the complexity of the implementable cameras. This work presents a full comparison between two possible system architectures, alternatively based on LO frequency multiplication or subharmonic mixing strat
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13

Lv, Guansheng, Wenhua Chen, Xiaofan Chen, and Zhenghe Feng. "An Energy-Efficient $Ka$ / $Q$ Dual-Band Power Amplifier MMIC in 0.1- $\mu$ m GaAs Process." IEEE Microwave and Wireless Components Letters 28, no. 6 (2018): 530–32. http://dx.doi.org/10.1109/lmwc.2018.2832841.

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14

Sitnikov, A., E. Kalabukhova, V. Oliynyk, and M. Kolisnichenko. "A Q-band low noise GaAs pHEMT MMIC power amplifier for pulse electron spin resonance spectrometer." Review of Scientific Instruments 88, no. 5 (2017): 054702. http://dx.doi.org/10.1063/1.4983574.

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15

Lv, Guansheng, Wenhua Chen, Xiaofan Chen, Fadhel M. Ghannouchi, and Zhenghe Feng. "A Compact Ka/Q Dual-Band GaAs MMIC Doherty Power Amplifier With Simplified Offset Lines for 5G Applications." IEEE Transactions on Microwave Theory and Techniques 67, no. 7 (2019): 3110–21. http://dx.doi.org/10.1109/tmtt.2019.2908103.

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16

Costanzo, Ferdinando, Rocco Giofrè, Antonino Massari, Marziale Feudale, Andrea Suriani, and Ernesto Limiti. "A MMIC power amplifier in GaN on Si technology for next generation Q band high throughput satellite systems." Integration 68 (September 2019): 139–46. http://dx.doi.org/10.1016/j.vlsi.2019.06.007.

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17

Pantoli, Leonardo, Vincenzo Stornelli, Giorgio Leuzzi, Hongjun Li, and Zhifu Hu. "Low-Current Design of GaAs Active Inductor for Active Filters Applications." Electronics 9, no. 8 (2020): 1232. http://dx.doi.org/10.3390/electronics9081232.

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Active inductors are suitable for MMIC integration, especially for filters applications, and the definition of strategies for an efficient design of these circuits is becoming mandatory. In this work we present design considerations for the reduction of DC current in the case of an active filter design based on the use of active inductors and for high-power handling. As an example of applications, the approach is demonstrated on a two-cell, integrated active filter realized with p-HEMT technology. The filter design is based on high-Q active inductors, whose equivalent inductance and resistance
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18

Lakshmi, Balla, and Gollakota Venkata Krishna Sharma. "DC-38GHz Nonuniform Distributed Amplifier Design with Gate and Drain Line Optimization Using 0.1µm GaAs pHEMT Technology." Engineering, Technology & Applied Science Research 13, no. 3 (2023): 10721–24. http://dx.doi.org/10.48084/etasr.5859.

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This paper presents an optimized three-cell Nonuniform Distributed Amplifier (NUDA) suitable for optoelectronic drivers in the Q band. This is the first NUDA of Darlington topology designed with the 0.1µm GaAs pHEMT process with a transition frequency fT of 130GHz. Gate microstrip line sections, drain microstrip line sections, and active device sizes were optimized to obtain high gain and large bandwidth from a Monolithic Microwave Integrated Circuit (MMIC) Distributed Amplifier (DA). This paper presents two NUDA designs with different topologies. The first was designed with a three-stage Comm
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19

Lopez-Diaz, Daniel, Ingmar Kallfass, Axel Tessmann, et al. "High-performance 60 GHz MMICs for wireless digital communication in 100 nm mHEMT technology." International Journal of Microwave and Wireless Technologies 3, no. 2 (2011): 107–13. http://dx.doi.org/10.1017/s1759078711000109.

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Wireless data communication is pushing towards 60 GHz and will most likely be served by SiGe and Complementary Metal Oxide Semiconductor (CMOS) technologies in the consumer market. Nevertheless, some applications are imposing superior performance requirements on the analog frontend, and employing III-V compound semiconductors can provide significant advantages with respect to transmitter power and noise figure. In this paper, we present essential building blocks and a novel single-chip low complexity transceiver Monolithic Microwave Integrated Circuit (MMIC) with integrated antenna switches fo
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20

Ding, Rui, Weipeng Xuan, Shurong Dong, et al. "The 3.4 GHz BAW RF Filter Based on Single Crystal AlN Resonator for 5G Application." Nanomaterials 12, no. 17 (2022): 3082. http://dx.doi.org/10.3390/nano12173082.

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To meet the stringent requirements of 5G communication, we proposed a high-performance bulk acoustic wave (BAW) filter based on single crystal AlN piezoelectric films on a SiC substrate. The fabrication of the BAW filter is compatible with the GaN high electron mobility transistor (HEMT) process, enabling the implementation of the integration of the BAW device and high-performance monolithic microwave integrated circuit (MMIC). The single crystal AlN piezoelectric film with 650-nm thickness was epitaxially grown on the SiC substrate by Metal Organic Chemical Vapor Deposition (MOCVD). After waf
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21

Pantoli, Leonardo, Giorgio Leuzzi, Francois Deborgies, Petar Jankovic, and Francesco Vitulli. "A Survey of MMIC Active Filters." Electronics 10, no. 14 (2021): 1680. http://dx.doi.org/10.3390/electronics10141680.

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High-Q filters are a critical component in many systems. However, high-Q filters require very low-loss passive elements that are not compatible with monolithic technology. Therefore, filters are often implemented as off-chip components. Tunable high-Q filters require even larger space and weight, and are usually quite bulky. Active filters have been proposed in the past for a monolithic implementation. However, it is not easy to fulfil such requirements as a high dynamic range, low power consumption, low noise, wide tunability, stability, etc. With this study, we propose a survey of the main s
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22

Varshney, Atul, Vipul Sharma, Chittaranjan Nayak, Amit Kumar Goyal, and Yehia Massoud. "A Low-Loss Impedance Transformer-Less Fish-Tail-Shaped MS-to-WG Transition for K-/Ka-/Q-/U-Band Applications." Electronics 12, no. 3 (2023): 670. http://dx.doi.org/10.3390/electronics12030670.

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This paper presents a low-loss, high-transmission, broadside-coupled, transverse, reciprocal, two-port, and nature-inspired Ka-band transition design to move the electromagnetic energy of a rectangular waveguide (RWG) to the microstrip (MS) line. The proposed transition is simple in structure, with an excellent insertion loss, S12/S21, (IL) near −0.40 dB and return loss, S11/S22, of <−21 dB, while the VSWR value is very close to one. Thus, this transition is an outstanding candidate for MIC/MMIC-based millimeter wave, military, and RADAR applications, as well as in wireless and satellite co
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23

Atamas, Sergei, Edward Pickering, Pavel Kopach, et al. "Full-length IL-33 acts differently from mature IL-33 in vivo partially in an ST2-independent fashion (120.30)." Journal of Immunology 188, no. 1_Supplement (2012): 120.30. http://dx.doi.org/10.4049/jimmunol.188.supp.120.30.

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Abstract IL-33 is a key regulator of inflammation and immunity. It remains controversial whether protease-mediated activation of IL-33 is needed for functional effects. We constructed and validated recombinant adenoviruses for gene delivery of full-length mouse (flm) and mature mouse (mm) (aa 109-266) IL-33 to mouse lungs in vivo. Gene expression was confirmed by RT-Q-PCR and ELISA. Analyses of BAL samples and lung tissues revealed substantial differences between flmIL-33 and mmIL-33. Both isoforms caused pulmonary infiltration and BAL influx of T and B lymphocytes and neutrophils, whereas mmI
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24

Liu, Wei Hua, and Gui Ju Wu. "Theory Analysis and Simulation of Optical 90° Hybrid without Intersection." Applied Mechanics and Materials 596 (July 2014): 799–802. http://dx.doi.org/10.4028/www.scientific.net/amm.596.799.

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An optical 90ohybrid consisting of a general interference based 4×4 MMI coupler, a phase shifter and a 2×2 MMI coupler was proposed. This device can demodulate optical signal without intersections. The output power formula of this device was derived from theory, and the effect on phase shifter was discussed analytically and numerically. It is not necessary to control phase shifter accurately, a deviation 10oform perfect phase shift will introduce 2% AC component loss of Q information only.
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25

Lee, Hai-Young, Yong-Goo Lee, Sung-Jin Kim, and Sang-Ki Yun. "Novel High-Q Solenoidal Inductor Using Bondwires for GaAs Monolithic Microwave Integrated Circuits (MMICs)." Japanese Journal of Applied Physics 38, Part 2, No. 12B (1999): L1523—L1524. http://dx.doi.org/10.1143/jjap.38.l1523.

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26

Xu, Xiaopeng, Yu Li, and Weiping Huang. "Inverse design of the MMI power splitter by asynchronous double deep Q-learning." Optics Express 29, no. 22 (2021): 35951. http://dx.doi.org/10.1364/oe.440782.

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27

Ilevbare, M., and O. I. Imasuen. "Sedimentology and maturity of Ajali formation, Benin flank Anambra basin, Nigeria." Ife Journal of Science 22, no. 1 (2020): 123–36. http://dx.doi.org/10.4314/ijs.v22i1.13.

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The Ajali Sandstone, western flank, Anambra Basin, was studied for textural characteristics and maturity of the sediments. Grain size analysis (51 samples), thin section and heavy mineral analysis (15 samples each) and XRF fusion for metallic oxides (15 samples) were analyzed. The textural parameters show that the Ajali Sandstone are medium sand, poorly to moderately sorted, coarse to strongly coarse skewed with mesokurtic to leptokurtic grains. The thin section analysis reveals grains that are sub-angular to sub-rounded (this typifies grains that have travelled fairly long distance to the dep
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28

Dr. Sujatha Balaraman,, P. Yogini. "Three Phase Eleven Level Modular Multilevel Inverter with PD-PWM for Grid Connected System." International Journal for Modern Trends in Science and Technology, no. 8 (August 7, 2020): 86–91. http://dx.doi.org/10.46501/ijmtst060816.

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The prominence of Modular Multilevel Inverters (MMI) is rising owing their merits of simple mechanical construction and good voltage sharing for semiconductor devices. Mostly Multilevel Inverters use more than one source; however, the effective use of all the sources at all levels is rare. Conventional Multilevel Inverters will diminish the energy efficiency of the conversion system. When compared to conventional multilevel inverter, Modular Multilevel Inverter with a high numbers of voltage levels seem to be the most suitable because of the use of an isolated dc source. This paper explores a
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29

Yarovenko, Hanna, Agnieszka Lopatka, Tetyana Vasilyeva, and Imre Vida. "Socio-economic profiles of countries - cybercrime victims." Economics & Sociology 16, no. 2 (2023): 167–94. http://dx.doi.org/10.14254/2071-789x.2023/16-2/11.

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Adeyemo, K. A., Isiavwe, D., Adetula, D., Olamide, O., & Folashade, O. (2020). Mandatory adoption of the Central Bank of Nigeria’s cashless and e-payment policy: implications for bank customers. Banks and Bank Systems, 15(2), 243-253. https://doi.org/10.21511/bbs.15(2).2020.21 Barabashev, A., Makarov, I., & Zarochintcev, S. (2022). How to shape government policies on high-technology development using the indicative evaluation of risks? Administratie si Management Public, 38, 70-89. https://doi.org/10.24818/amp/2022.38-04 Bayram, M., & Akat, M. (2019). Market-Neutral Trading with Fu
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30

Liu, Lin-sheng, Qian Lin, Hai-feng Wu, Yi-Jun Chen, and Liu-Lin Hu. "A compact broadband high power quasi-MMIC GaN power amplifier." Circuit World ahead-of-print, ahead-of-print (2021). http://dx.doi.org/10.1108/cw-07-2020-0157.

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Purpose The design and implementation of a broadband quasi-monolithic microwave integrated circuit (q-MMIC) power amplifier (PA) is presented for 0.2 to 2.2 GHz applications. Design/methodology/approach To obtain an efficient, high-gain and high-power performance with in a compact and low-cost size, the prototype is based on Gallium nitride (GaN) on SiC 0.25-µm transistors, whereas the passive matching networks are realized on an AlN substrate as thin film circuit. Findings Measured results of the q-MMIC PA across the 0.2 to 2.2 GHz band show at least 32 ± 3 dB small-signal gains, an output po
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31

Zhang, Dawei, Wenli Fu, Xiangke Deng, et al. "$X$-to $Q$-Band MMIC Predistortion Linearizers With Tunable Frequency-Dependent Phase Conversion Capacity Using GaAs HEMT Technology." IEEE Transactions on Microwave Theory and Techniques, 2022, 1–14. http://dx.doi.org/10.1109/tmtt.2022.3219404.

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32

Lima, Danilo Augusto Ferreira de, Ronan Campos Abdon, Mariana Gouveia Gabriel, et al. "[ID 36883] ANÁLISE BIOMECÂNICA DE MEMBROS INFERIORES EM MULHERES ACOMETIDAS COM DORES ARTICULARES NO JOELHO." Revista Brasileira de Ciências da Saúde 23, no. 3 (2019). http://dx.doi.org/10.22478/ufpb.2317-6032.2019v23n3.36883.

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Objetivo: analisar a biomecânica de membros inferiores em mulheres acometidas com dores articulares no joelho. Metodologia: Estudo observacional analítico e descritivo do tipo transversal, com 40 mulheres entre 18 a 60 anos com dor no joelho. Utilizou-se ficha de avaliação contendo as variáveis antropométricas e postural, concomitante avaliação estática e dinâmica do joelho. Analisou-se os dados pelo software BioEstat 5.0 com nível α de significância de 5% (p≤0,05). Resultados: Foram coletadas 40 mulheres (idade: 45,2±14,7 anos, peso: 70,3±12,3 kg, altura: 1,60±0,05 cm, Índice de Massa Corpóre
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33

Zhang, Meng-Yao, Hao Chen, Hassan Hassanabadi, Zheng-Wen Long, and Hui Yang. "Joule-Thomson expansion of charged dilatonic black holes." Chinese Physics C, December 7, 2022. http://dx.doi.org/10.1088/1674-1137/aca958.

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Abstract Based on the Einstein-Maxwell theory, the Joule-Thomson (J-T) expansion of charged dilatonic black holes(the solutions are neither flat nor AdS) for (n + 1)-dimensional spacetime is studied. To this end, we analyze the effects of dimensions n and dilaton field α on the J-T expansion. The explicit expression of J-T coefficient is derived, as a result, the negative heat capacity leads to cooling process. In contrast to the effect of dimension, the inversion curve decreases with charge Q at low pressure while the an opposite result is obtained at high pressure. We can see that with the i
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34

Valletti, L., S. Fantauzzi, and F. Di Paolo. "An Innovative Lens Type FinLine to Microstrip Transition." Journal of Infrared, Millimeter, and Terahertz Waves, September 1, 2022. http://dx.doi.org/10.1007/s10762-022-00869-z.

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AbstractDue to the disadvantages of vacuum tubes in terms of warm-up time, size, and high-voltage needs, solid-state power amplifiers (SSPAs) with gallium nitride (GaN) monolithic microwave integrated circuits (MMICs) are the key solution for power levels up to some kilowatts in continuous wave. An SSPA is the most convenient solution for these RF power levels due to its low weight, small size, negligible warm-up time, low-voltage operation, and high reliability. Spatial power amplifiers (SPAs) combining techniques are the best candidates for SSPAs due to the intrinsic low attenuation in divid
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35

Page, Michelle K., and Maciej L. Goniewicz. "New Analytical Method for Quantifying Flavoring Chemicals of Potential Respiratory Health Risk Concerns in e-Cigarette Liquids." Frontiers in Chemistry 9 (October 28, 2021). http://dx.doi.org/10.3389/fchem.2021.763940.

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Numerous flavoring chemicals are added to e-cigarette liquids to create various flavors. Flavorings provide sensory experience to users and increase product appeal; however, concerns have been raised about their potential inhalation toxicity. Estimating potential health risk of inhaling these chemicals has been challenging since little is known about their actual concentrations in e-cigarette products. To date, a limited number of analytical methods exist to measure the concentrations of flavoring chemicals in e-cigarette products. We have developed an analytical method that accurately and pre
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36

Thanh, Le Trung. "LeTrungThanh Optical Biosensors Based on Multimode Interference and Microring Resonator Structures." VNU Journal of Science: Natural Sciences and Technology 34, no. 1 (2018). http://dx.doi.org/10.25073/2588-1140/vnunst.4727.

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We review our recent work on optical biosensors based on microring resonators (MRR) integrated with 4x4 multimode interference (MMI) couplers for multichannel and highly sensitive chemical and biological sensors. The proposed sensor structure has advantages of compactness, high sensitivity compared with the reported sensing structures. By using the transfer matrix method (TMM) and numerical simulations, the designs of the sensor based on silicon waveguides are optimized and demonstrated in detail. We applied our structure to detect glucose and ethanol concentrations simultaneously. A high sens
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