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2020 IEEE/MTT-S International Microwave Symposium (IMS)最新文献

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An X-band LC VCO Using a New Boosted Active Capacitor With 53 % Tuning Range and -202.4 dBc/Hz FoMT 一种采用新型升压有源电容的x波段LC压控振荡器，具有53%的调谐范围和-202.4 dBc/Hz的fmt
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223827
Pawan Agarwal, M. Chahardori, D. Heo
{"title":"An X-band LC VCO Using a New Boosted Active Capacitor With 53 % Tuning Range and -202.4 dBc/Hz FoMT","authors":"Pawan Agarwal, M. Chahardori, D. Heo","doi":"10.1109/IMS30576.2020.9223827","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223827","url":null,"abstract":"This paper presents a new boosted active-capacitor topology for wide tuning range voltage-controlled oscillators (VCO). A tuned inductor-based active-impedance-conversion circuit (LAIC) is used to multiply the capacitance of a capacitor bank and the negative-transconductance of LAIC in the proposed region of operation but without increasing losses. A boosted active-capacitor prototype in 65 nm CMOS process achieves a capacitance tuning ratio of 7.8 and a quality factor of higher than 20 across VCO's tuning range. An X-band VCO prototype with the proposed boosted active-capacitor achieves a 53 % measured fractional frequency tuning range and phase noise of -115 dBc/Hz at 1 MHz offset, resulting in an excellent figure-of-merit-with-tuning-range (FoMT) of -202.4 dBc/Hz.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"67 1","pages":"357-360"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77941612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Fusion of Radar and Communication Information for Tracking in OFDM Automotive Radar at 24 GHz 24 GHz OFDM汽车雷达跟踪中雷达与通信信息融合
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223858
Jéssica B. Sanson, D. Castanheira, A. Gameiro, P. Monteiro
{"title":"Fusion of Radar and Communication Information for Tracking in OFDM Automotive Radar at 24 GHz","authors":"Jéssica B. Sanson, D. Castanheira, A. Gameiro, P. Monteiro","doi":"10.1109/IMS30576.2020.9223858","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223858","url":null,"abstract":"In this paper, a novel method for tracking targets using OFDM radar with an integrated communication system (RadCom) for automotive applications is presented. OFDM-based radar schemes are promising candidates for future intelligent transportation networks. However, due to system resolution limitations, improvements in estimation and tracking of targets are required. Correct and accurate object tracking is a critical aspect of advanced driver assistance systems. The proposed method takes advantage of the dual functionality of RadCom systems through an information fusion approach that combines the radar signal reflected by the targets with received communication signals. The main idea is to explore cooperation between vehicles to improve safety and accuracy during tracking. Tracking results of laboratory measurements at 24 GHz and simulation results in a multi-target environment are presented.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"83 1","pages":"1153-1156"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77948411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analysis of the Transient Dynamics of Coupled-Oscillator Systems 耦合振荡器系统的瞬态动力学分析
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223814
S. Sancho, A. Suárez, F. Ramírez
{"title":"Analysis of the Transient Dynamics of Coupled-Oscillator Systems","authors":"S. Sancho, A. Suárez, F. Ramírez","doi":"10.1109/IMS30576.2020.9223814","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223814","url":null,"abstract":"A realistic reduced-order formulation of systems containing several transistor-based oscillators, such as coupled-oscillator networks, is presented. The formulation is able to predict the oscillation build-up and other transient effects for the first time to our knowledge. The individual oscillator models are constructed from a nonlinear admittance function extracted from circuit-level harmonic-balance simulations. These models are used to derive a nonlinear differential-equation system able to describe the transient behavior of the entire structure. For illustration, the method has been applied to a coupled-oscillator system at 5 GHz, obtaining very good agreement with circuit-level envelope transient (when applicable) and with measurements.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"37 1","pages":"385-388"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78077856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Impact of Input Nonlinearity on Efficiency, Power, and Linearity Performance of GaN RF Power Amplifiers 输入非线性对GaN射频功率放大器效率、功率和线性性能的影响
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9224110
S. Dhar, T. Sharma, R. Darraji, D. Holmes, J. Staudinger, X. Zhou, V. Mallette, Fadhel M. Ghannouchi
{"title":"Impact of Input Nonlinearity on Efficiency, Power, and Linearity Performance of GaN RF Power Amplifiers","authors":"S. Dhar, T. Sharma, R. Darraji, D. Holmes, J. Staudinger, X. Zhou, V. Mallette, Fadhel M. Ghannouchi","doi":"10.1109/IMS30576.2020.9224110","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9224110","url":null,"abstract":"The impact of input nonlinearity due to the nonlinear C<inf>GS</inf>-<tex>$V$</tex><inf>GS</inf>profile on load harmonic tuned power amplifier (PA) performance is qualitatively discussed. It is experimentally validated by pulsed vector load pull measurements that both Class B and Class F PA operation are quite sensitive to the source second harmonic (Z<inf>2S</inf>) termination with an efficiency delta of ∼40%. In contrast, Class F<sup>−l</sup> PA shows relatively robust performance with an efficiency delta of ∼10% versus Z<inf>2S</inf> terminations. Thus, we identify the ‘good’ and ‘bad’ design space of Z<inf>2S</inf>terminations on the Smith chart for load harmonic tuned PA classes. In addition, this paper identifies a design space continuum for Z<inf>2S</inf> terminations other than a short for Class F<sup>−l</sup> PA which results in consistent efficiency, output power, and improved linearity.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"24 1","pages":"281-284"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76207514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
A 3.9-GHz-Band Outphasing Power Amplifier with Compact Combiner Based on Dual-Power-Level Design for Wide-Dynamic-Range Operation 基于双功率电平设计的3.9 ghz频段紧凑型混叠功率放大器，适用于宽动态范围工作
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9224037
Ryoichi Ogasawara, Y. Takayama, R. Ishikawa, K. Honjo
{"title":"A 3.9-GHz-Band Outphasing Power Amplifier with Compact Combiner Based on Dual-Power-Level Design for Wide-Dynamic-Range Operation","authors":"Ryoichi Ogasawara, Y. Takayama, R. Ishikawa, K. Honjo","doi":"10.1109/IMS30576.2020.9224037","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9224037","url":null,"abstract":"An outphasing power amplifier with a compact combiner has been developed for recent and future wireless communication systems. The combiner could be successfully shrunk by applying a series-load-compensation connection scheme. In addition, a dual-power-level design was applied for the power amplifier to increase the dynamic range of its high-efficiency power. A fabricated GaN HEMT outphasing power amplifier exhibited a peak drain efficiency of 77% with a saturation power of 37 dBm at 3.92 GHz. In addition, a drain efficiency of more than 50% was maintained within an output back-off of 7 dB.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"9 1","pages":"111-114"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76946017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A 135–183GHz Frequency Sixtupler in 250nm InP HBT 135-183GHz频率六倍器在250nm InP HBT
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223798
M. Bao, Thanh Ngoc Thi Do, D. Kuylenstierna, H. Zirath
{"title":"A 135–183GHz Frequency Sixtupler in 250nm InP HBT","authors":"M. Bao, Thanh Ngoc Thi Do, D. Kuylenstierna, H. Zirath","doi":"10.1109/IMS30576.2020.9223798","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223798","url":null,"abstract":"A technique to design a broadband two-stage frequency tripler is proposed. The 1st and the 2nd harmonics obtained from the first stage are mixed in the second stage, getting the 3rd harmonic. Between the two stages, there is a two-pole filter which lets the amplitude of the 1st harmonic increase and the amplitude of the 2nd harmonic decrease when the frequency increases. Consequently, a large 1st harmonic is always mixed with a small 2nd harmonic, and vice versa, which equalizes the amplitude of the mixing product, i.e., the 3rd harmonic, over a large bandwidth. Together with a frequency doubler and a buffer amplifier, this frequency tripler is used in a frequency sixtupler. A proof-of-concept circuit is designed and implemented in 250 nm indium phosphide (InP) double-heterojunction bipolar transistor (DHBT) technology. For an input power of 6.3 dBm, the sixtupler has an output power between 0 dBm to 4.6 dBm in the output frequency range from 135 GHz to 183 GHz. It exhibits up to 13 dBc rejection ratio of the undesired 4th, 5th, and 7th harmonics. The sixtupler consumes a dc power of 100 mW, and achieves a peak power efficiency of 2.5%.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"38 1","pages":"480-483"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73585150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Fast-Chirp MIMO Radar System Using Beat Frequency FDMA With Single-Sideband Modulation 基于单边带调制的拍频FDMA快速啁啾MIMO雷达系统
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223878
M.-Q. Nguyen, R. Feger, Jonathan Bechter, Markus Pichler-Scheder, A. Stelzer
{"title":"A Fast-Chirp MIMO Radar System Using Beat Frequency FDMA With Single-Sideband Modulation","authors":"M.-Q. Nguyen, R. Feger, Jonathan Bechter, Markus Pichler-Scheder, A. Stelzer","doi":"10.1109/IMS30576.2020.9223878","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223878","url":null,"abstract":"In this paper, we investigate the feasibility of using a fast-chirp frequency-modulated continuous-wave radar system in order to realize frequency-division multiple-access multiple-input multiple-output. The frequency shifting is implemented by single-sideband modulation for unambiguous range enhancement. Furthermore, we apply a binary mask to separate transmit signals at the receivers instead of using a bandpass filter. Measurements accomplished using a prototype radar system with 3 transmit antennas and 4 receive antennas demonstrate the proposed approach.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"25 1","pages":"1015-1018"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73922265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A 6.5~7.5-GHz CMOS Wideband FMCW Radar Transmitter based on Synthetic Bandwidth Technique 基于合成带宽技术的6.5~7.5 ghz CMOS宽带FMCW雷达发射机
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223969
Hanyang Su, S. Balon, Keyou Cheong, C. Heng
{"title":"A 6.5~7.5-GHz CMOS Wideband FMCW Radar Transmitter based on Synthetic Bandwidth Technique","authors":"Hanyang Su, S. Balon, Keyou Cheong, C. Heng","doi":"10.1109/IMS30576.2020.9223969","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223969","url":null,"abstract":"A fully integrated wideband FMCW radar transmitter based on synthetic bandwidth technique has been proposed and implemented in 55-nm CMOS technology. The wideband chirp is synthesized by mixing 500-MHz chirp from low frequency phase locked loop (PLL) with multiple high frequency carriers generated from sub-harmonic injection locking oscillator (SHILO). The fast switching SHILO allows the combination of multiple 500-MHz chirps to form a wideband chirp at high frequency. In the design, a wideband fractional-N PLL with randomized phase interpolation, covering 1.8~2.3 GHz, is employed to generate the desired 500-MHz chirp while achieving low in-band phase noise of -115~120 dBc/Hz. The high frequency SHILO also attains similar low in-band phase noise thanks to the injection locking property while achieving fast switching time less than 14 ns. The proposed transmitter achieves final chirp bandwidth of 1 GHz with good phase noise performance. The technique can be easily extended for wider chirp bandwidth by increasing the number of output carriers from SHILO. The transmitter supports pulse repetition period ranging from 0.3 to 6.3 ms. It consumes 84 mW, while occupying a total active area of 2.24 mm2,","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"68 1","pages":"213-216"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80929082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Dual-Mode Frequency Reconfigurable Waveguide Filter with a Constant Frequency Spacing between Transmission Zeros 在传输零点之间具有恒定频率间隔的双模频率可重构波导滤波器
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223839
B. Gowrish, R. Mansour
{"title":"A Dual-Mode Frequency Reconfigurable Waveguide Filter with a Constant Frequency Spacing between Transmission Zeros","authors":"B. Gowrish, R. Mansour","doi":"10.1109/IMS30576.2020.9223839","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223839","url":null,"abstract":"This paper presents a novel frequency reconfigurable dual-mode waveguide filter with elliptic response. The proposed filter maintains a constant absolute bandwidth and a constant rejection bandwidth (frequency spacing between transmission zeros) over the tuning range. Furthermore, the filter can be tuned using a single tuning mechanism. A 4th order prototype filter at 11.5 GHz with 50 MHz bandwidth and 2 symmetric transmission zeros (± 45 MHz) is fabricated and measured. The measured tuning range of the filter is 390 MHz within which the absolute bandwidth variation is within ±1 MHz. In-addition, the measured frequency spacing between the transmission zeros varies well within ±2 MHz over the entire tuning range. The proposed filter promises to be useful for flexible payloads in aerospace applications.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"1 1","pages":"811-814"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73542714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Miniaturized Reconfigurable 28 GHz PCM-Based 4-bit Latching Variable Attenuator for 5G mmWave Applications 用于5G毫米波应用的小型化可重构28 GHz pcm型4位锁存可变衰减器
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9224045
Tejinder Singh, R. Mansour
{"title":"Miniaturized Reconfigurable 28 GHz PCM-Based 4-bit Latching Variable Attenuator for 5G mmWave Applications","authors":"Tejinder Singh, R. Mansour","doi":"10.1109/IMS30576.2020.9224045","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9224045","url":null,"abstract":"This paper reports a novel millimeter-wave (mmWave) reconfigurable phase change material (PCM) germanium telluride (GeTe) based 4-bit latching variable attenuator. The proposed variable attenuator is designed using PCM single-pole double-throw (SPDT) switches monolithically integrated with four passive bridged-T resistor network based fixed attenuators to provide wide attenuation range. The PCM switching units are latching type thus consume no static dc power. The integrated planar resistors are fabricated precisely on-wafer to get wide-band operation at desired 8 GHz frequency band. The device is fabricated in-house using a seven-layer microfabrication process. The proposed device is highly miniaturized with device area of 0.52 mm2. At the centre frequency of 28 GHz, the measured attenuation level varies from 4.7 dB to 37 dB with 16 discrete steps. The attenuator can be reconfigured at a tuning speed of less than 1µs,","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"776 1","pages":"53-56"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73552071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
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