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Nonlinear/electromagnetic approach for time-modulated array simulation 时间调制阵列仿真的非线性/电磁方法
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830096
D. Masotti, P. Francia, A. Costanzo, V. Rizzoli
{"title":"Nonlinear/electromagnetic approach for time-modulated array simulation","authors":"D. Masotti, P. Francia, A. Costanzo, V. Rizzoli","doi":"10.1109/RWS.2014.6830096","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830096","url":null,"abstract":"The paper describes a multi-domain CAD platform, exploiting nonlinear and electromagnetic software tools, for the rigorous analysis of time-modulated linear arrays. A circuit-level analysis of the non-radiating network including the time-modulated nonlinear switches is carried out by means of the Harmonic-Balance (HB) method. The corresponding nonlinear regime is then used to evaluate the actual far-field radiated by the array in the real operating conditions. Examples with different switch modulation patterns are presented in order to demonstrate the effectiveness of the tool and also the impact of simplifying assumptions typical of previous approaches.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116162322","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 21.1 mW 6.2 dB NF 77∼81 GHz CMOS low-noise amplifier with 13.5±0.5 dB S21 and excellent input and output matching for automotive radars 21.1 mW 6.2 dB NF 77 ~ 81 GHz CMOS低噪声放大器，具有13.5±0.5 dB S21和出色的输入和输出匹配，适用于汽车雷达
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830087
Yo‐Sheng Lin, Guan-Lin Lee, Chien-Chin Wang, Chih-Chung Chen
{"title":"A 21.1 mW 6.2 dB NF 77∼81 GHz CMOS low-noise amplifier with 13.5±0.5 dB S21 and excellent input and output matching for automotive radars","authors":"Yo‐Sheng Lin, Guan-Lin Lee, Chien-Chin Wang, Chih-Chung Chen","doi":"10.1109/RWS.2014.6830087","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830087","url":null,"abstract":"A low power and wideband three-stage millimeter-wave (MMW) low-noise amplifier (LNA) using standard 90 nm CMOS technology is reported. T-network (or π-match) is utilized to achieve simultaneously wideband input and output impedance matching, wideband power gain (S21) and wideband NF at W-band. The LNA consumes 21.1 mW, achieving S11 better than -10 dB for frequencies 62.3~82.4 GHz, S22 better than -10 dB for frequencies 62.8~84.6 GHz, S12 better than -29 dB for frequencies 72~84 GHz, and group delay variation smaller than ±6.5 ps for frequencies 70~90 GHz. Additionally, high and flat S21 of 13.1±1.5 dB is achieved for frequencies 72~84 GHz, which means the corresponding 3-dB bandwidth is 12 GHz. Furthermore, the LNA achieves minimum noise figure (NF) of 6.2 dB at 78 GHz and NF of 6.8±0.6 dB for frequencies 75~82 GHz, one of the best NF results ever reported for a W-band CMOS LNA.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122714312","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
High dynamic-range and sensitivity six-port receiver using reactive matching technique 采用响应匹配技术的高动态范围、高灵敏度六端口接收机
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830108
Saad Qayyum, M. Wei, R. Negra
{"title":"High dynamic-range and sensitivity six-port receiver using reactive matching technique","authors":"Saad Qayyum, M. Wei, R. Negra","doi":"10.1109/RWS.2014.6830108","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830108","url":null,"abstract":"Six-port receivers have increasingly become popular due to their simple design, wide bandwidth and low power consumption. Large area and narrow dynamic range are the key factors in limiting the use of six-port topology in commercial mobile communication devices. In order to improve its dynamic range, we propose an L-type reactive matching network for the detector stage of the six-port receiver. The proposed six-port receiver covers the frequency band from 1 GHz to 3.3 GHz. Over the specified band, it has an EVM of less than 4 % with -20 dBm of RF input power and 15 dBm of LO power. At 2.2 GHz, it has 64 dB of dynamic range with EVM between 0.33 % and 10.5 %.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122182637","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: 5
Using OFDM pilot tones for spectrum sensing with applications to mobile WiMAX 使用OFDM导频进行频谱感应，应用于移动WiMAX
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830128
A. Temtam, D. Popescu
{"title":"Using OFDM pilot tones for spectrum sensing with applications to mobile WiMAX","authors":"A. Temtam, D. Popescu","doi":"10.1109/RWS.2014.6830128","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830128","url":null,"abstract":"Spectrum sensing is an important functionality for cognitive radio (CR) systems and enables more efficient spectrum utilization in wireless systems through spectrum sharing. In this paper, we consider a CR system that uses spectrum sensing based on the Time-Domain Symbol Cross-correlation (TDSC) technique, and study its application in the context of the mobile WiMAX standard for which the TDSC method is explained analytically and illustrated with numerical results obtained from simulations.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129223281","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: 5
Three-way Doherty power amplifier for efficient amplification of wideband signals with extended PAPR 三路多尔蒂功率放大器，用于有效放大宽带信号，具有扩展的PAPR
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830163
H. Golestaneh, F. A. Malekzadeh, S. Boumaiza
{"title":"Three-way Doherty power amplifier for efficient amplification of wideband signals with extended PAPR","authors":"H. Golestaneh, F. A. Malekzadeh, S. Boumaiza","doi":"10.1109/RWS.2014.6830163","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830163","url":null,"abstract":"This paper deals with three-way Doherty power amplifiers (3W-DPAs) as a viable solution for wideband high-efficiency amplification of multi-standard signals. A methodology is presented to design a 3W-DPA with maximal bandwidth. This methodology was successfully applied to design a 30-W GaN 3W-DPA with a measured average drain efficiency of 55% at an output back-off of up to 9 dB, over the frequency range of 0.73-0.98 GHz. The 3W-DPA was driven with a four-carrier wideband code division multiple access (WCMDA) signal with 20-MHz bandwidth and 11.7-dB peak-to-average power ratio (PAPR) at 830 MHz. Power added efficiencies of 47% was measured at 32 dBm average output power, with an adjacent channel leakage ratio (ACLR) of -48 dBc after linearization.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126374228","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: 7
A high efficiency, electrically-small, 3-D machined-substrate antenna fabricated with fused deposition modeling and 3-D printing 采用熔融沉积建模和3d打印技术制造的高效率、电小、3d加工基板天线
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830137
I. Nassar, H. Tsang, K. Church, T. Weller
{"title":"A high efficiency, electrically-small, 3-D machined-substrate antenna fabricated with fused deposition modeling and 3-D printing","authors":"I. Nassar, H. Tsang, K. Church, T. Weller","doi":"10.1109/RWS.2014.6830137","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830137","url":null,"abstract":"This paper presents a high efficiency, electrically-small, light-weight, 3-D machined-substrate antenna. The antenna is a half-wave dipole conformed into a cubical shape and has an integrated parallel plate balun for the feed. The operational frequency is 2.4 GHz and the measured 10 dB return loss bandwidth and gain are 3.6% and 1.5 dBi, respectively. The antenna fits in a sphere of radius λ/10.5 and weighs 0.5 g. The antenna substrate is built of Acrylonitrile Butadiene Styrene plus material using the fused deposition process and then metalized using the direct print additive manufacturing processed Dupont CB-028 silver ink. The performance is compared to a previous prototype made with printed circuit board technology and other 3-D antenna designs from the literature.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125986339","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: 11
Design and fabrication of CPW to dielectric image-guide transitions at 60 GHz on SOI 在SOI上60 GHz CPW到介电像导转换的设计与制作
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830159
M. Basha, B. Biglarbegian, S. Gigoyan, S. Safavi-Naeini
{"title":"Design and fabrication of CPW to dielectric image-guide transitions at 60 GHz on SOI","authors":"M. Basha, B. Biglarbegian, S. Gigoyan, S. Safavi-Naeini","doi":"10.1109/RWS.2014.6830159","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830159","url":null,"abstract":"In this paper, a novel millimeter-wave dielectric image-guide to CPW transition has been designed and fabricated using micromachining fabrication techniques. The new provided technology uses high resistivity SOI wafer to implement a low loss dielectric image guides at the millimeter-wave range of frequencies. The coplanar waveguide is patterned with Aluminum over the dielectric image-guide. The measurement results are in good agreement with the simulation results and show that the insertion loss of the transition is 0.82 dB at 60 GHz.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130762139","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 rapid direction of arrival estimation procedure for adaptive array antennas covered by a shaped dielectric lens 形状介质透镜覆盖自适应阵列天线的快速到达方向估计方法
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830113
S. Ravishankar, B. Dharshak
{"title":"A rapid direction of arrival estimation procedure for adaptive array antennas covered by a shaped dielectric lens","authors":"S. Ravishankar, B. Dharshak","doi":"10.1109/RWS.2014.6830113","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830113","url":null,"abstract":"Direction of Arrival (DOA) estimation algorithms specifically Multiple SIgnal Classification (MUSIC) and Minimum Variance Distortionless Response (MVDR) are used in a planar array - shaped dielectric lens combination to locate a desired user. However, refractive effect of the lens has to be compensated for in these algorithms, rapidly in real time to extract the true arrival angles. Geometrical optics is employed to trace the rays from an aperture in front of the lens, through the shaped lens boundaries to the individual antenna elements to determine the DOA of the user signal. Angle dependent modifications for the DOA of the signal in both elevation and azimuth planes have been introduced to correct for the refractive effects of the lens and extract the correct angle of arrival using a new mapped column peak search technique.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130957586","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
Indoor experiment of 8-by-2 multiuser MIMO transmission using Tomlinson-Harashima-Precoding subject to limited CSI feedback 有限CSI反馈下使用tomlinson - harashima预编码的8 × 2多用户MIMO传输室内实验
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830105
Y. Hatakawa, Tomoko Matsumoto, K. Kitagawa, S. Konishi
{"title":"Indoor experiment of 8-by-2 multiuser MIMO transmission using Tomlinson-Harashima-Precoding subject to limited CSI feedback","authors":"Y. Hatakawa, Tomoko Matsumoto, K. Kitagawa, S. Konishi","doi":"10.1109/RWS.2014.6830105","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830105","url":null,"abstract":"This paper presents indoor experimental results of 8-by-2 multiuser MIMO (MU-MIMO) transmission using Tomlinson-Harashima-Precoding (THP) subject to limited Channel State Information (CSI) feedback. The channel correlation in indoor environment tends to be high because user equipments for MU-MIMO are situated close to each other due to the limited space. In such environment, MU-MIMO using linear precoding degrades the spectrum efficiency. The merit of this work is to experimentally confirm the feasibility of THP, which is robust to highly correlated channel, subject to limited CSI feedback. Experimental results reveal that the THP does not degrade under the highly correlated environment and the peak spectrum efficiency reaches 17 bit/sec/Hz.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133678573","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 wideband phase modulation technique adopting Fractional-N Direct Digital Frequency Synthesizer 采用分数- n直接数字频率合成器的宽带相位调制技术
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830083
Bohai Zhang, F. You, Renbin Tong, Songbai He
{"title":"A wideband phase modulation technique adopting Fractional-N Direct Digital Frequency Synthesizer","authors":"Bohai Zhang, F. You, Renbin Tong, Songbai He","doi":"10.1109/RWS.2014.6830083","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830083","url":null,"abstract":"In this paper, an open-loop phase modulator, called Fractional-N Direct Digital Frequency Synthesizer (DDFS), for polar transmitter is proposed to resolve the limited bandwidth problem occurred in the traditional phase-locked loop (PLL)-based phase modulator. Besides, an effective noise shaping quantization method is taken into account to attenuate the fractional-spurs introduced by Fractional-N DDFS. The worst case RMS EVM per burst of the modulator is 0.32% when performing 10-Mbps 16PSK.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115707630","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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