Relevant bibliographies by topics / Frequency Agile Circuits

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Frequency Agile Circuits'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Frequency Agile Circuits"

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Fu, Qianhua. "A low phase noise and frequency agility synthesizer for millimeter-wave transceiver." International Journal of Microwave and Wireless Technologies 9, no. 8 (April 11, 2017): 1611–18. http://dx.doi.org/10.1017/s1759078717000307.

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With the increasing demand of millimeter-wave (MMW) communication, the performance of its frequency synthesizer has high requirements. In this paper, a multiple conversion mechanism, which used hybrid frequency synthesis technique is presented. Some key modules include linear frequency-modulated generator, agile, and low phase noise local oscillators (LOs), automatic gain control, receiver front-end circuit, and MMW LO circuits are discussed and simulated to verify correctness of the mechanism. The experimental results show that, spurious is better than −65 dBc, phase noise is no more than −80
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Lourandakis, E., M. Schmidt, S. Seitz, and R. Weigel. "Reduced Size Frequency Agile Microwave Circuits Using Ferroelectric Thin-Film Varactors." IEEE Transactions on Microwave Theory and Techniques 56, no. 12 (December 2008): 3093–99. http://dx.doi.org/10.1109/tmtt.2008.2006807.

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Chi, Yu-Jen, and Fu-Chiarng Chen. "A novel quadri-polarization-agile microstrip antenna with polarization synthesizing feeding network." International Journal of Microwave and Wireless Technologies 8, no. 2 (March 26, 2015): 385–94. http://dx.doi.org/10.1017/s1759078715000227.

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This paper proposes planar antennas with quadri-polarization diversity using a pair of orthogonal linear polarizations and a pair of orthogonal circular polarizations (CP). A novel feeding network with four input ports and four output ports is presented, allowing antenna polarization diversity by selecting different input ports, which can generate right-handed CP, left-handed CP, horizontal linear polarization, and vertical linear polarization. The first design uses two square patch resonators to synthesize the four polarizations; the second design comprises four circularly polarized patches t
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Vorobiev, Andrei, and Spartak Gevorgian. "Enhanced tunable performance of high Q-factor BaxSr1−xTiO3 film bulk acoustic wave resonators." International Journal of Microwave and Wireless Technologies 5, no. 3 (April 15, 2013): 361–69. http://dx.doi.org/10.1017/s1759078713000317.

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Emerging intrinsically tunable film bulk acoustic wave(BAW) resonators allow the development of new generation reconfigurable and agile microwave circuits. In this paper, we demonstrate the enhancement of tunable performance of the high Q-factor BaxSr1−xTiO3 BAW – solidly mounted resonators (BAW–SMR) by varying Ba concentration. The Ba0.5Sr0.5TiO3 BAW–SMR reveal tunability of series resonance frequency up to 2.4%, electromechanical coupling coefficient up to 7.5% and rather high Q-factor, up to 250 at 5.3 GHz. Correlations between the measured electroacoustic parameters are analyzed using the
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Su, B., and T. W. Button. "The processing and properties of barium strontium titanate thick films for use in frequency agile microwave circuit applications." Journal of the European Ceramic Society 21, no. 15 (January 2001): 2641–45. http://dx.doi.org/10.1016/s0955-2219(01)00330-2.

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Liang, Jiaming, Yichuan Wu, Justin K. Yim, Huimin Chen, Zicong Miao, Hanxiao Liu, Ying Liu, et al. "Electrostatic footpads enable agile insect-scale soft robots with trajectory control." Science Robotics 6, no. 55 (June 30, 2021): eabe7906. http://dx.doi.org/10.1126/scirobotics.abe7906.

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Agility and trajectory control are two desirable features for robotics, but they become very challenging for soft robots without rigid structures to support rapid manipulations. Here, a curved piezoelectric thin film driven at its structural resonant frequency is used as the main body of an insect-scale soft robot for its fast translational movements, and two electrostatic footpads are used for its swift rotational motions. These two schemes are simultaneously executed during operations through a simple two-wire connection arrangement. A high relative centripetal acceleration of 28 body length
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Castañeda-Miranda, A., and L. D. L. Vizcaya. "A Novel System for Measuring Optical Properties in Arterial Blood of Man." Applied Bionics and Biomechanics 3, no. 2 (2006): 87–92. http://dx.doi.org/10.1155/2006/748520.

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The necessity of man–machine communication has been increasing day by day because of the great number of approaches that help to make human life agile or comfortable. Health is one of the aspects that has generated more interest in recent years. The optical technologies are new technical tools that are being implemented for medical diagnosis and for describing various processes occurring within human blood. These techniques have the virtue of being nondestructive; in addition they have the advantage of remote direction by using anin situtechnique, with sensitivity capable of studying the prope
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Alzahrani, S., and T. S. Kalkur. "A Tunable Bandstop Filter Using Thin Film Barium-Strontium-Titanate Varactors." MRS Proceedings 1691 (2014). http://dx.doi.org/10.1557/opl.2014.745.

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AbstractFerroelectric barium-strontium-titanate (BST) varactors are becoming extremely important particularly for frequency-agile RF and microwave circuits. Tunable bandstop filters are desired to eliminate unwanted signals for several communication systems. In this paper, a compact tunable bandstop filter (BSF) based on a single hairpin resonator, using ferroelectric BST varactors, is also presented. The frequency response of proposed BSF can be adjusted by increasing or decreasing the length, width, and space for the coupled line hairpin resonator. One pair of variable capacitors has been in
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Chang, W., J. S. Horwitz, J. M. Pond, S. W. Kirchoefer, and D. B. Chrisey. "Pulsed Laser Deposition of BaxSr1-xTiO3 Thin Films for Frequency Agile Microwave Electronics." MRS Proceedings 526 (1998). http://dx.doi.org/10.1557/proc-526-205.

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AbstractOriented, single phase thin films (~5000Å thick) of BaxSr1-xTiO3 (BST) have been deposited on to (100) MgO and LaAlO3 (LAO) single crystal substrates using pulsed laser deposition (PLD). A strong correlation is observed between the microstructure of the deposited film and the dielectric tuning and loss at microwave frequencies. Microstructural defects observed in as deposited films include strain, due to film substrate lattice mismatch and oxygen and cation vacancies. Compensation of the ablation target with excess Ba and Sr is observed to increase the dielectric constant and to reduce
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"Design of Penta-Band Antenna for Concurrent Multiband Single Chain Radio Receiver." International Journal of Recent Technology and Engineering 8, no. 5 (January 30, 2020): 2587–90. http://dx.doi.org/10.35940/ijrte.e6387.018520.

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In this paper, penta-band antenna is presented for concurrent, multiband, and single chain radio receivers. The antenna is manufactured on a 50 × 100 mm FR4 printed circuit board, and is able to provide five concurrent, operating bands covering a frequency range from 2 to 6 GHz. The antenna bandwidth can be increased up to 280 MHz. Using hexahedral mesh the slot antenna design we can achieve more accurate concurrent bands. These five bands are having larger bandwidth than conventional antennas. Using CM-FARAD (Concurrent Multiband Frequency Agile Radio) architecture we design the antenna for a
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Dissertations / Theses on the topic "Frequency Agile Circuits"

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Fardin, Ernest Anthony, and efardin@ieee org. "Barium Strontium Titanate Thin Films for Tunable Microwave Applications." RMIT University. Electrical and Computer Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080104.135507.

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There has been unprecedented growth in wireless technologies in recent years; wireless devices such as cellular telephones and wireless local area network (WLAN) transceivers are becoming ubiquitous. It is now common for a single hardware device, such as a cellular telephone, to be capable of multi-band operation. Implementing a dedicated radio frequency (RF) front-end for each frequency band increases the component count and therefore the cost of the device. Consequently, there is now a requirement to design RF and microwave circuits that can be reconfigured to operate at different frequency
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Jin, Zhang. "Frequency agile RF/microwave circuits using BST varactors." 2003. http://www.lib.ncsu.edu/theses/available/etd-12162003-160350/unrestricted/etd.pdf.

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Vasani, Anand Jitendra. "Design of frequency agile circuits using barium strontium titanate varactor." 2006. http://www.lib.ncsu.edu/theses/available/etd-07062006-180512/unrestricted/etd.pdf.

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Chiu, Shih-Chia, and 邱詩家. "Dual-Band and Frequency-Agile, Compact Composite Right/Left-Handed Transmission Line Antennas Using Novel Termination Circuits." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/38013632361488129934.

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博士<br>國立臺灣大學<br>電信工程學研究所<br>101<br>Two resonant-type composite right/left-handed transmission line (CRLH TL) antennas terminated with novel termination circuits are proposed in the dissertation for dual-band and frequency-tunable operations, respectively. First, for dual-band operation, the transmission line approach and equivalent circuit model are used to analyze the characteristics of the CRLH TLs and justify the absence of one of the two zeroth-order resonances in conventional unbalanced CRLH TL resonators using open or short terminations. Then, according to the termination effects and r
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Lourandakis, Errikos [Verfasser]. "Frequency agile microwave circuits based on ferroelectric thin-film varactors = Frequenzagile Mikrowellenschaltungen auf der Basis ferroelektrischer Dünnfilm-Varaktoren / vorgelegt von Errikos Lourandakis." 2009. http://d-nb.info/994002300/34.

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Hsu, Siang-Rong, and 許向榮. "Circuit Modeling of Varactor for Frequency-Agile Microwave Circuit Design." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/90866660483748889769.

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碩士<br>元智大學<br>通訊工程學系<br>104<br>The thesis proposes a quasi-lumped equivalent circuit of the varactor diode manufactured by Skyworks Inc., and the proposed model predicts an accurate response for wideband applications. Based on the manufacture's pure lumped equivalent circuit model, a lossy transmission line section, i.e. a distributed structure, is introduced to describe packaging parasitic effects and enhance accuracy of the device characteristics. The circuit parameters are retrieved by curve-fitting the measured scattering parameters of the varactor. Besides, the quality factor of the var
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Conference papers on the topic "Frequency Agile Circuits"

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Kaehlert, Stefan, Dirk Bormann, Tobias D. Werth, Muh-Dey Wei, Lei Liao, and Stefan Heinen. "Design of frequency agile filters in RF frontend circuits." In 2012 IEEE Radio and Wireless Symposium (RWS). IEEE, 2012. http://dx.doi.org/10.1109/rws.2012.6175361.

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Ding, Xin, Jianhui Wu, and Chao Chen. "An Agile Automatic Frequency Calibration Technique for PLL." In 2018 IEEE International Conference on Integrated Circuits, Technologies and Applications (ICTA). IEEE, 2018. http://dx.doi.org/10.1109/cicta.2018.8706068.

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Preis, Sebastian, Alex Wiens, Nikolai Wolff, Rolf Jakoby, Wolfgang Heinrich, and Olof Bengtsson. "Frequency-agile packaged GaN-HEMT using MIM thickfilm BST varactors." In 2015 10th European Microwave Integrated Circuits Conference (EuMIC). IEEE, 2015. http://dx.doi.org/10.1109/eumic.2015.7345164.

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Milevsky, Borislav, Myriam Ariaudo, Jean-Luc Gautier, and Marin Hristov. "Design of an agile frequency synthesizer for UWB communications." In 2011 IEEE 9th International New Circuits and Systems Conference (NEWCAS 2011). IEEE, 2011. http://dx.doi.org/10.1109/newcas.2011.5981283.

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Goswami, Sushmit, Helen Kim, and Joel L. Dawson. "A frequency-agile RF frontend for multi-band TDD radios in 45nm SOI CMOS." In 2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC). IEEE, 2013. http://dx.doi.org/10.1109/rfic.2013.6569596.

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Xin Xu, Xiaohong Tang, and Tao Wu. "A DDS-based C-band wideband agile frequency synthesizer." In 2013 International Workshop on Microwave and Millimeter Wave Circuits and System Technology (MMWCST). IEEE, 2013. http://dx.doi.org/10.1109/mmwcst.2013.6814643.

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Cetinoneri, Berke, Yusuf A. Atesal, and Gabriel M. Rebeiz. "A two-channel Ku-band BiCMOS digital beam-forming receiver for polarization-agile phased-array applications." In 2009 IEEE Radio Frequency Integrated Circuits Symposium (RFIC). IEEE, 2009. http://dx.doi.org/10.1109/rfic.2009.5135505.

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Schmidt, Martin, Markus Grozing, Stefan Heck, Ingo Dettmann, Manfred Berroth, Dirk Wiegner, Wolfgang Templ, and Andreas Pascht. "A 1.55 GHz to 2.45 GHz center frequency continuous-time bandpass delta-sigma modulator for frequency agile transmitters." In 2009 IEEE Radio Frequency Integrated Circuits Symposium (RFIC). IEEE, 2009. http://dx.doi.org/10.1109/rfic.2009.5135511.

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Zhang, Frank, Ranjit Gharpurey, and Peter Kinget. "A 3.1–9.5 GHz agile UWB pulse radio receiver with discrete-time wideband-IF correlation in 90nm CMOS." In 2008 IEEE Radio Frequency Integrated Circuits Symposium (RFIC). IEEE, 2008. http://dx.doi.org/10.1109/rfic.2008.4561379.

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Kaehlert, Stefan, Dirk Bormann, Tobias D. Werth, Muh-Dey Wei, Lei Liao, and Stefan Heinen. "A frequency agile LNA for cognitive radio applications in the UHF band." In 2011 IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS). IEEE, 2011. http://dx.doi.org/10.1109/mwscas.2011.6026432.

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