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SHF-Band Compact 3-bit Reconfigurable BPF Employing pHEMT Switched Capacitor Array IC 采用pHEMT开关电容阵列集成电路的shf波段紧凑型3位可重构BPF
2020 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2020-01-01 DOI: 10.1109/RWS45077.2020.9050112
Y. Yamao, N. Akutsu
{"title":"SHF-Band Compact 3-bit Reconfigurable BPF Employing pHEMT Switched Capacitor Array IC","authors":"Y. Yamao, N. Akutsu","doi":"10.1109/RWS45077.2020.9050112","DOIUrl":"https://doi.org/10.1109/RWS45077.2020.9050112","url":null,"abstract":"For more efficient use of radio spectrum in 5th generation mobile communication (5G) and beyond, reconfigurable RF circuits that can flexibly change multiple bands are promising. Three-bit reconfigurable bandpass filters (BPFs) have been proposed that employs reconfigurable resonators with branch-line switching structure. However, from the view point of actual implementation, the transmission lines that form branch-lines restrict the circuit size and increase complexity. In this paper, we design a new reconfigurable resonator with a switched capacitor array (SCA) and apply it to 3-bit reconfigurable BPF in SHF band. After analyzing the influence of parasitic capacitance of the RF switches, a 3-bit SCA is designed using 0.5 μm gate pHEMT process including MIM capacitors. Prototype BPF is fabricated for selecting center frequencies from 3.3 to 4.44 GHz. The measured RF characteristic of the prototype is almost same as that of transmission line design, while reducing circuit size remarkably.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126266743","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
Measuring Propagation Channel Variations and Reciprocity using 28 GHz Indoor Distributed Multi-user MIMO 利用28ghz室内分布式多用户MIMO测量传播信道变化和互易性
2020 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2020-01-01 DOI: 10.1109/RWS45077.2020.9050046
N. Tawa, T. Kuwabara, Y. Maruta, T. Kaneko
{"title":"Measuring Propagation Channel Variations and Reciprocity using 28 GHz Indoor Distributed Multi-user MIMO","authors":"N. Tawa, T. Kuwabara, Y. Maruta, T. Kaneko","doi":"10.1109/RWS45077.2020.9050046","DOIUrl":"https://doi.org/10.1109/RWS45077.2020.9050046","url":null,"abstract":"This paper describes the indoor experimental verifications of a 28 GHz multi-user multiple-input multiple-output testbed considering 5G networks. A base station (BS) of the testbed has eight transceivers and eight distributed antenna units consisting of 15 elements inline antennas. The testbed is built at total reflection circumstances in a shield room. The over-the-air (OTA) experiment with single user equipment (UE) demonstrates that channel quality variations in the UE locations, frequency, and time are decreased by using the eight antenna units. The OTA experiment with two UEs shows uplink to downlink channel reciprocity by using zero-forcing pre-coded signals in millimeter-wave.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132476749","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
Linear and Planar Antenna Array Nulling based on Schelkunoff Polynomial and Genetic Algorithm 基于schelkuoff多项式和遗传算法的线性和平面天线阵零化
2020 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2020-01-01 DOI: 10.1109/RWS45077.2020.9050021
Abubakar Hamza, K. Qureshi, S. Sheikh, H. Attia
{"title":"Linear and Planar Antenna Array Nulling based on Schelkunoff Polynomial and Genetic Algorithm","authors":"Abubakar Hamza, K. Qureshi, S. Sheikh, H. Attia","doi":"10.1109/RWS45077.2020.9050021","DOIUrl":"https://doi.org/10.1109/RWS45077.2020.9050021","url":null,"abstract":"In many aircraft and electronic warfare systems, a lot of obtrusion comes from unwanted sources, which may be noise or interfering signal. In this work, a null or multiple nulls are placed at predefined direction(s) where we have the interference while maintaining the maximum at a specific location. This is achieved through an algorithm employing the Schelkunoff nulling theory. The genetic algorithm is then used to optimize the array excitations. The proposed technique reduces the number of unknown array coefficients and hence the processing time is considerably decreased without compromising other radiation pattern specifications.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133027712","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: 0
Development of UHDTV Wireless Camera Transmitter using Millimeter-Wave Band 毫米波波段超高清电视无线摄像发射机的研制
2020 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2020-01-01 DOI: 10.1109/RWS45077.2020.9050101
Y. Matsusaki, Fumiya Yamagishi, Akiko Yamasato, T. Nakagawa, S. Okabe, N. Iai
{"title":"Development of UHDTV Wireless Camera Transmitter using Millimeter-Wave Band","authors":"Y. Matsusaki, Fumiya Yamagishi, Akiko Yamasato, T. Nakagawa, S. Okabe, N. Iai","doi":"10.1109/RWS45077.2020.9050101","DOIUrl":"https://doi.org/10.1109/RWS45077.2020.9050101","url":null,"abstract":"Currently, we are researching a single-carrier transmission with frequency domain equalization (SC-FDE), which is robust to power-amplifier distortion and superior in power efficiency for 4K and 8K ultrahigh-definition television (UHDTV) wireless cameras using 42-GHz band of millimeter wave. In this paper, we describe a prototype of a transmitter with the SC-FDE and evaluate its transmission performance. A compact transmitter that can transmit 200-Mbps-class UHDTV signals was obtained by doubling the channel bandwidth of our previous 80-Mbps-class high-definition television wireless camera through orthogonal frequency division multiplexing. The transmission power was doubled to compensate the noise generated by the doubled bandwidth.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131540931","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
Tweezers-Types of Electrodes in Video-assisted Thoracic Surgery for Lung Cancer at High Frequency Bands 电视辅助肺癌胸外科手术高频电极的镊子类型
2020 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2020-01-01 DOI: 10.1109/RWS45077.2020.9050091
M. Sakamoto, Shouta Sora, F. Kuroki
{"title":"Tweezers-Types of Electrodes in Video-assisted Thoracic Surgery for Lung Cancer at High Frequency Bands","authors":"M. Sakamoto, Shouta Sora, F. Kuroki","doi":"10.1109/RWS45077.2020.9050091","DOIUrl":"https://doi.org/10.1109/RWS45077.2020.9050091","url":null,"abstract":"Tweezers-types of electrodes have been proposed to help doctors who operate the lung cancer surgery. Main emphasis was placed on the principle of the operation based on the resonant circuit consisting of the capacitor between the electrodes and the inductor of feeding wire. In the first place, the tweezers were fabricated by using additive manufacturing technology. Next, the performance was evaluated with numerical and experimental investigations, and thus, the validity was successfully confirmed.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130071853","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
Determining the Constant PIN Diode Impedance Point for Broadband Reconfigurability 确定宽带可重构的恒定PIN二极管阻抗点
2020 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2020-01-01 DOI: 10.1109/RWS45077.2020.9050092
R. Caverly
{"title":"Determining the Constant PIN Diode Impedance Point for Broadband Reconfigurability","authors":"R. Caverly","doi":"10.1109/RWS45077.2020.9050092","DOIUrl":"https://doi.org/10.1109/RWS45077.2020.9050092","url":null,"abstract":"Broadband, high power, fast switching RF control and reconfigurable circuits frequently use PIN diodes as the controlling element. An assumption often made by circuit designers is that the PIN diode resistance is constant over frequency (not considering parasitics). PIN diode impedance is influenced by the junctions and the I-region carrier lifetime (τ) at frequencies as high as several hundred MHz, and so a means to define the onset of the high frequency resistance will provide these designers a guideline for that constant-resistance assumption. This paper provides such a guideline and shows how measurements of PIN diode impedance as a function of frequency can provide this metric, which analysis shows to be approximately 10/πτ. The procedure is validated with measurements on packaged PIN diodes.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130159320","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
Improvement on Identification Technique of Primary Tumor Using Ring Resonator with Oscillator Circuit at Centimeter Frequency Bands 厘米波段振荡电路环形谐振器对原发性肿瘤识别技术的改进
2020 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2020-01-01 DOI: 10.1109/RWS45077.2020.9050011
Shouta Sora, F. Kuroki, M. Eguchi, T. Yamakawa, Fumihiro Tanaka
{"title":"Improvement on Identification Technique of Primary Tumor Using Ring Resonator with Oscillator Circuit at Centimeter Frequency Bands","authors":"Shouta Sora, F. Kuroki, M. Eguchi, T. Yamakawa, Fumihiro Tanaka","doi":"10.1109/RWS45077.2020.9050011","DOIUrl":"https://doi.org/10.1109/RWS45077.2020.9050011","url":null,"abstract":"As an early consideration to identify primary tumors by catching tumor cells circulating in the blood, resonant frequencies of the ring resonator type of electrode having some internal organs such as colon, stomach, lung, and liver have been numerically investigated. Main emphasis is placed on the improvement of identification sensitivity by adding the oscillator circuit consisting of the FET in the ring resonator, because the Q-factor inherent in an internal organ is usually low due to the poor loss tangent. Comparing the sensitivity of the conventional ring resonator type of electrode, it has been improved because the oscillation frequency inherent in an internal organ can be easily observed thanks to the oscillator condition with negative resistance. And thus, the validity of the proposed technique has been confirmed.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122711623","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: 0
Implementation of a Low Cost Interfering Signal Cancellation Approach Based on a Fast Power Minimization Technique Using Particle Swarm Optimization Algorithm 基于快速功率最小化技术的低成本干扰信号消除方法的粒子群优化算法
2020 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2020-01-01 DOI: 10.1109/RWS45077.2020.9050114
F. Tamjid, Farhan Quaiyum, T. Kvelashvili, R. Kazemi, N. Tran, Özlem Kilic, A. Fathy
{"title":"Implementation of a Low Cost Interfering Signal Cancellation Approach Based on a Fast Power Minimization Technique Using Particle Swarm Optimization Algorithm","authors":"F. Tamjid, Farhan Quaiyum, T. Kvelashvili, R. Kazemi, N. Tran, Özlem Kilic, A. Fathy","doi":"10.1109/RWS45077.2020.9050114","DOIUrl":"https://doi.org/10.1109/RWS45077.2020.9050114","url":null,"abstract":"Generally, an adaptive array is utilized in combination with multitude of mixers, LOs and ADC circuits to identify the angle of arrival of a jamming signal. Then the weights of the adaptive array elements are adjusted to null a jamming signal. Alternatively, the received RF power is combined first and then rectified using a rectifying diode; then an inexpensive ADC circuit is utilized to monitor the power level and control the weighting blocks of the utilized array accordingly based on an efficient power minimization algorithm. Here, a particle swarm optimization technique is successfully used to search for optimum adaptive array weights and effectively place a null in the direction of the jamming signal with significantly low number of iterations. Results indicate better than 35 dB unwanted signal reduction.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124857494","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
Compact Design Models of Cryo and Room Temperature Si MOS, GaN, InGaAs, and p-diamond HEMT TeraFETs 低温和室温Si MOS, GaN, InGaAs和p-diamond HEMT terafet的紧凑设计模型
2020 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2020-01-01 DOI: 10.1109/RWS45077.2020.9050137
M. Shur, J. Mikalopas, G. Aizin
{"title":"Compact Design Models of Cryo and Room Temperature Si MOS, GaN, InGaAs, and p-diamond HEMT TeraFETs","authors":"M. Shur, J. Mikalopas, G. Aizin","doi":"10.1109/RWS45077.2020.9050137","DOIUrl":"https://doi.org/10.1109/RWS45077.2020.9050137","url":null,"abstract":"The plasmonic field effect transistors structures (TeraFETs) with the varying width allow for modulation of the electron drift velocity while keeping the plasma velocity constant. The constant plasma velocity and variable electron drift velocity lead to the resonant excitation of the unstable plasma modes in the repeated sections of the varying width resulting in a strong enhancement of the plasmonic instability. This instability involves the oscillating dipole charge carried by the plasma waves. The plasmons can efficiently couple to the terahertz (THz) electromagnetic radiation due to the periodic geometry of the gated structure. Our modeling shows that such THz devices could be implemented at room temperature and at 77 K using 22 nm and 65 nm Si MOS technology. At cryogenic temperatures, plasmonic structures fabricated using standard Si MOS technology should exhibit superior performance in a wide frequency range (from 300 GHz to a few THz). A still better performance at room temperature could be achieved using 22 nm and 65 nm GaN and 22 nm, 65 nm, and even 130 nm p-diamond TeraFETs.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122317439","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
Bihelical Antenna System to Mitigate Multipath Interference in Microwave Data Transmission 缓解微波数据传输中多径干扰的双螺旋天线系统
2020 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2020-01-01 DOI: 10.1109/RWS45077.2020.9050136
John H. Mott, Zachary A. Marshall
{"title":"Bihelical Antenna System to Mitigate Multipath Interference in Microwave Data Transmission","authors":"John H. Mott, Zachary A. Marshall","doi":"10.1109/RWS45077.2020.9050136","DOIUrl":"https://doi.org/10.1109/RWS45077.2020.9050136","url":null,"abstract":"Rural microwave data transmission, which has the capability of connecting numerous types of distributed sensors to provide IoT connectivity, often requires signal transmission over long distances at low elevations, resulting in challenges due to multipath interference and signal depolarization. A microwave antenna system that addresses these challenges within acceptable size, power, and cost constraints was designed and tested. This bihelical antenna is composed of two concentric, circularly polarized helical antennas mounted on a conducting backplane, a phase trimmer, and signal combiner. The proposed antenna functions as a microwave bridge system and is intended to fill the gap in mid-range network access in rural settings.","PeriodicalId":184822,"journal":{"name":"2020 IEEE Radio and Wireless Symposium (RWS)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125546923","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: 0
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