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2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)最新文献

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Stochastic Subranging ADC Using Variable Comparator Offset Technique 基于可变比较器偏移技术的随机子量程ADC
2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI: 10.1109/RFIT49453.2020.9226236
Sintaro Uto, K. Ohhata
{"title":"Stochastic Subranging ADC Using Variable Comparator Offset Technique","authors":"Sintaro Uto, K. Ohhata","doi":"10.1109/RFIT49453.2020.9226236","DOIUrl":"https://doi.org/10.1109/RFIT49453.2020.9226236","url":null,"abstract":"We propose a stochastic subranging analog-to-digital converter using a variable comparator offset technique. The variable comparator offset technique enables the same comparator group to be utilized in both coarse and fine conversion phases; therefore, high resolution can be obtained with a small number of comparators. The offset current injector is added to the comparator, resulting in a variable offset. Moreover, variable offset averaging is also introduced. These techniques can change the standard deviation of the comparator group from 130 to 5 mV. The simulation results show that an average effective number of bits of 10 can be obtained when 255 × 9 comparators are used.","PeriodicalId":283714,"journal":{"name":"2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117247379","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
Design Theory of a Standing Wave Mitigator for a Moving Load Along a Transmission Line 输电线路移动负荷驻波减振器设计理论
2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI: 10.1109/RFIT49453.2020.9226196
M. Mizutani, T. Ohira
{"title":"Design Theory of a Standing Wave Mitigator for a Moving Load Along a Transmission Line","authors":"M. Mizutani, T. Ohira","doi":"10.1109/RFIT49453.2020.9226196","DOIUrl":"https://doi.org/10.1109/RFIT49453.2020.9226196","url":null,"abstract":"To make the dream of wireless powering to running electric vehicles come true, this paper presents a viable solution to the standing wave problem inevitably arising on a long electrified roadway. We introduce a left-handed (LH) circuit to function as a standing wave mitigator. As a power loss index in the circuit, we formulate the LH circuit with Poincaré length. We then consider a long transmission line, along which multiple LH circuits are periodically inserted. By extending the formula, we explore how the total Poincaré length behaves when we sweep the load impedance and the number of segments. Results reveal the condition for achieving the minimum total Poincaré length.","PeriodicalId":283714,"journal":{"name":"2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129942162","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
28GHz 4⨯4 one-sided directional slot array antenna for 5G application 28GHz 4面向5G应用的单向槽阵天线
2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI: 10.1109/RFIT49453.2020.9226175
Yoshiaki Hayashida, A. Ishikawa, S. Fukagawa, Ryuji Kitaya, G. C. Eu, T. Ide, H. Kanaya
{"title":"28GHz 4⨯4 one-sided directional slot array antenna for 5G application","authors":"Yoshiaki Hayashida, A. Ishikawa, S. Fukagawa, Ryuji Kitaya, G. C. Eu, T. Ide, H. Kanaya","doi":"10.1109/RFIT49453.2020.9226175","DOIUrl":"https://doi.org/10.1109/RFIT49453.2020.9226175","url":null,"abstract":"This paper presents a design of one-sided beam forming slot array antenna for 5G application. The antenna element is composed of top metal, dielectric substrate, middle metal, dielectric substrate, and bottom metal layer. The antenna has 4⨯4 elements. High frequency signals with various phase are fed by each elements. The simulation and measurement results of the antenna gain and beam steering characteristics are presented in this paper. The gain of proposed antenna is 17.6dBi.","PeriodicalId":283714,"journal":{"name":"2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129057747","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
Sub-Terahertz 300GHz Amplifier on CMOS for Ultra-High Data-Rate Wireless Communications 用于超高数据速率无线通信的次太赫兹300GHz CMOS放大器
2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI: 10.1109/RFIT49453.2020.9226172
K. K. Tokgoz, K. Okada
{"title":"Sub-Terahertz 300GHz Amplifier on CMOS for Ultra-High Data-Rate Wireless Communications","authors":"K. K. Tokgoz, K. Okada","doi":"10.1109/RFIT49453.2020.9226172","DOIUrl":"https://doi.org/10.1109/RFIT49453.2020.9226172","url":null,"abstract":"This work presents a 300GHz amplifier in 65-nm standard bulk CMOS. The amplifier has gain from 273 to 301GHz, and the peak gain is 21dB at 298GHz. The amplifier has 16-stage positive-feedback common-source topology. The power consumption is 35.4mW from a 1.2V supply. Transistor (1μm×8) layout is optimized for minimizing gate and channel resistance to increase gain corner frequency from 250GHz (conventional design kit-based transistor measurement result) to 270GHz, and $f$max from around 300GHz (design kit based) up to 317GHz. The DC-blocking capacitors are 10fF finger-based design which has lower loss than conventional MOM capacitors.","PeriodicalId":283714,"journal":{"name":"2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127950526","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
Development of an Air-filled SIW Filter with Wideband Spurious Suppression 一种带宽带杂散抑制的充气SIW滤波器的研制
2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI: 10.1109/RFIT49453.2020.9226173
Daichi Shishido, Masaya Tamura
{"title":"Development of an Air-filled SIW Filter with Wideband Spurious Suppression","authors":"Daichi Shishido, Masaya Tamura","doi":"10.1109/RFIT49453.2020.9226173","DOIUrl":"https://doi.org/10.1109/RFIT49453.2020.9226173","url":null,"abstract":"In this paper, we propose an air-filled substrate integrated waveguide (SIW) bandpass filter (BPF) to realize the wideband attenuation. The proposed filter has a direct-coupling structure via an iris. In the area where the TE103 and TE104 modes appear as electric fields of spurious modes are concentrated, the dielectric of the substrate is removed to make a hollow structure. The effective dielectric constant of the substrate decreases as a part of the substrate becomes hollow, and the spurious modes move to a higher frequency band. The designed BPF achieved −20 dB out-of-band rejection from 6.0 to 11.7 GHz. The hollow structure reduced insertion loss to −0.3 dB.","PeriodicalId":283714,"journal":{"name":"2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131728543","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
Experimental Investigation on Mode Isolation Enhancement for 28 GHz OAM Circular Antenna Arrays by Dielectric Loading 介质加载增强28ghz OAM圆形天线阵列模隔离的实验研究
2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI: 10.1109/RFIT49453.2020.9226188
Keita Kitagawa, A. Sanada, A. Fukuda, H. Okazaki
{"title":"Experimental Investigation on Mode Isolation Enhancement for 28 GHz OAM Circular Antenna Arrays by Dielectric Loading","authors":"Keita Kitagawa, A. Sanada, A. Fukuda, H. Okazaki","doi":"10.1109/RFIT49453.2020.9226188","DOIUrl":"https://doi.org/10.1109/RFIT49453.2020.9226188","url":null,"abstract":"In this paper, we experimentally study an effect of dielectric loadings in OAM antenna arrays on the isolation characteristics. Cylindrical dielectrics with the permittivity of 2.6 are loaded in TX/RX circular 8-element OAM antenna arrays designed at 28 GHz, and OAM mode isolation characteristics are measured in an anechoic chamber. It is confirmed that the isolation characteristics are enhanced by 3.2 dB in the broad frequency range in the 28 GHz band with the optimized dielectric cylinder loading.","PeriodicalId":283714,"journal":{"name":"2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121567825","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
Analysis of Sub-Giga Band Propagation for Maritime Low Power Wide Area Application 海上低功率广域应用的亚千兆波段传播分析
2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI: 10.1109/RFIT49453.2020.9226176
Koki Kawauchi, Etsushi Oda, T. Hamasaki
{"title":"Analysis of Sub-Giga Band Propagation for Maritime Low Power Wide Area Application","authors":"Koki Kawauchi, Etsushi Oda, T. Hamasaki","doi":"10.1109/RFIT49453.2020.9226176","DOIUrl":"https://doi.org/10.1109/RFIT49453.2020.9226176","url":null,"abstract":"In this paper, we clarify the characteristics of sub-Giga band radio wave propagation at sea for the application of LPWA (Low Power Wide Area) radio in aquaculture. A particular feature of this scenario is high-sensitivity low power communication system (RSSI: received signal strength indicator-142 dBm typical, transmitter power 20 mW at 920 MHz) over a 22 km distance. Additionally, it is determined that the island size (width on a propagation line) has a great influence on the diffraction phenomenon, which can be expressed by a multiple knife-edge model.","PeriodicalId":283714,"journal":{"name":"2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"234 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122999679","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
A Compact Vector-Sum Phase Shifter for 5G Applications in 22 nm FD-SOI CMOS 用于5G应用的22纳米FD-SOI CMOS紧凑型矢量和移相器
2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI: 10.1109/RFIT49453.2020.9226241
P. V. Testa, Lazlo Szilagyi, Zoltan Tibensky, C. Carta, F. Ellinger
{"title":"A Compact Vector-Sum Phase Shifter for 5G Applications in 22 nm FD-SOI CMOS","authors":"P. V. Testa, Lazlo Szilagyi, Zoltan Tibensky, C. Carta, F. Ellinger","doi":"10.1109/RFIT49453.2020.9226241","DOIUrl":"https://doi.org/10.1109/RFIT49453.2020.9226241","url":null,"abstract":"This paper presents a vector-sum phase shifter for 5G applications at 28 GHz, implemented in a 22 nm FD-SOI CMOS technology. The component is formed by four VGAs which control the amplitude of quadrature and out-of-phase vectors generated on-chip with compact passive structures. A continuous 0°-360° phase control has been demonstrated with an average insertion loss of 9.5 dB at 28 GHz and a minimum RMS error of 0.4 dB and 4° when the power consumption PDC is 11.5 mW. The presented solution achieves the smallest active area while showing comparable performance for the other features against the state of the art.","PeriodicalId":283714,"journal":{"name":"2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121097080","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
Effect of an Electromagnetic Wave Absorber on 300-GHz Short-Range Wireless Communications 电磁波吸收器对300 ghz短距离无线通信的影响
2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI: 10.1109/RFIT49453.2020.9226230
Sangyeop Lee, Masao Fujita, Masayuki Toyoda, S. Hara, S. Amakawa, T. Yoshida, M. Fujishima
{"title":"Effect of an Electromagnetic Wave Absorber on 300-GHz Short-Range Wireless Communications","authors":"Sangyeop Lee, Masao Fujita, Masayuki Toyoda, S. Hara, S. Amakawa, T. Yoshida, M. Fujishima","doi":"10.1109/RFIT49453.2020.9226230","DOIUrl":"https://doi.org/10.1109/RFIT49453.2020.9226230","url":null,"abstract":"In this paper, a 300-GHz short-range wireless data transmission is demonstrated, with considering antenna-performance variation due to surrounding conditions. For that, a λ/4-type absorber with a resistive film is employed to decrease the antenna-performance variation in the short-range wireless link. By adopting it, bit error rate of the demodulated signal (quadrature phase shift keying, 6 Gb/s) is improved from 5.3 ⨯ 10−6to 2.8 ⨯ 10−6at the carrier frequency of 272 GHz (distance: 1 cm).","PeriodicalId":283714,"journal":{"name":"2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133433253","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 140-GHz 14-dBm Power Amplifier using Power Combiner based on Symmetric Balun in 65-nm Bulk CMOS 基于对称Balun的140ghz 14dbm功率组合放大器
2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI: 10.1109/RFIT49453.2020.9226186
D. Yamazaki, Takamichi Horikawa, T. Iizuka
{"title":"A 140-GHz 14-dBm Power Amplifier using Power Combiner based on Symmetric Balun in 65-nm Bulk CMOS","authors":"D. Yamazaki, Takamichi Horikawa, T. Iizuka","doi":"10.1109/RFIT49453.2020.9226186","DOIUrl":"https://doi.org/10.1109/RFIT49453.2020.9226186","url":null,"abstract":"This paper proposes a 140-GHz power amplifier (PA) with 14-dBm saturated output power. Our PA uses a symmetric-balun-based power combiner in D-band, which relaxes the impedance matching with the former-stage amplifiers thanks to the balanced input impedance. The PA prototypes have been designed in 65-nm bulk CMOS process. The 2-parallel PA achieves 6.0 dBm OP1dB with measurement, and 11.4 dBm saturated output power is expected with simulation. The performance of the 4-parallel PA is verified with simulation that shows 9.4 dBm OP1dB and 14 dBm saturated output power.","PeriodicalId":283714,"journal":{"name":"2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115336824","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
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