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2015 IEEE International Wireless Symposium (IWS 2015)最新文献

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A nonlinear filter-based model for concurrent dual-band power amplifiers 基于非线性滤波器的并行双频功率放大器模型
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164603
Changyang Wang, Xiaowei Zhu
{"title":"A nonlinear filter-based model for concurrent dual-band power amplifiers","authors":"Changyang Wang, Xiaowei Zhu","doi":"10.1109/IEEE-IWS.2015.7164603","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164603","url":null,"abstract":"This paper proposes a nonlinear filter-based model with low complexity for concurrent dual-band digital predistortion. The model saves remarkable number of multiplication and needs low precision of calculation, and can be easily realized on hardware platforms. Moreover, this model achieves almost the same linearization performance as the 2D-DPD model. A broadband GaN HEMT power amplifier is used to verify the model. The dual 20MHz band signal with 8 dB PAPR spacing 140MHz are tested at 2.55GHz. The proposed model uses only 18 complex multiplexers. With predistortion, ACPR can be improved from -38dBc to -50dBc.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115114749","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 compact passive retrodirective antenna array with SIW phase shifters integrated 集成了SIW移相器的紧凑型被动反向定向天线阵列
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164614
Hao Zhou, W. Hong, Ling Tian, Li Cheng
{"title":"A compact passive retrodirective antenna array with SIW phase shifters integrated","authors":"Hao Zhou, W. Hong, Ling Tian, Li Cheng","doi":"10.1109/IEEE-IWS.2015.7164614","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164614","url":null,"abstract":"A compact millimeter-wave passive retrodirective antenna (RDA) array with substrate integrated waveguide (SIW) phase shifters integrated is presented in this paper. The primary function of the passive RDA array is to enhance the monostatic radar cross section (RCS) of the metal plate. SIW phase shifters are utilized to realize the phase criterion of the passive RDA array instead of only changing the length of the transmission lines, resulting in a compact size and less scattering influence from the SIW structure. Alternating longitude SIW slots array antenna is adopted as radiation element and SIW transmission lines integrated with SIW phase shifters are used to form the feeding network. To validate the design method, a prototype passive RDA array with 8 radiation elements using the single-layer printed circuit board (PCB) process is designed and fabricated at 35 GHz. Experimental results agree well with simulation results, validating that the prototype RDA array can achieve an enhancement of more than 10 dB on the monostatic RCS compared to the metal plate with same size.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116909009","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 compact quarter-wavelength stepped-impedance resonator bandpass filter with source-load coupling 一个紧凑的四分之一波长阶跃阻抗谐振器带通滤波器与源负载耦合
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164537
Junfeng Xu, W. Hong, Zhe Chen
{"title":"A compact quarter-wavelength stepped-impedance resonator bandpass filter with source-load coupling","authors":"Junfeng Xu, W. Hong, Zhe Chen","doi":"10.1109/IEEE-IWS.2015.7164537","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164537","url":null,"abstract":"In this paper, a compact quarter-wavelength stepped-impedance resonator bandpass filter is proposed, two extra transmission zeros are implemented by source-load coupling between the feedlines, a filter with two resonators is designed, each resonator consists of a low-Z section and a high-Z section, good performance is achieved both in passband and stopband. Demonstrator filter is designed on the Rogers RT/Duroid 5880 dielectric substrate, centered at 5.8GHz, and the BW is 400MHz. The measureted result shows that RL in passband is less than 15dB, and the minimal IL is 3.0dB. This filter occupies an area of 6.55mm×2.85mm. The demonstrator filter is fabricated, and good agreement between measurement and simulation is achieved.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127299121","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-efficiency rectifier with extended input power range based on two parallel sub-rectifying circuits 基于两个并联分整流电路的扩展输入功率范围的高效整流器
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164639
Xiu Yin Zhang, Q. Lin
{"title":"High-efficiency rectifier with extended input power range based on two parallel sub-rectifying circuits","authors":"Xiu Yin Zhang, Q. Lin","doi":"10.1109/IEEE-IWS.2015.7164639","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164639","url":null,"abstract":"This paper presents a two-way rectifier with high efficiency over an extended range of input power. The proposed solution is based on a 2:1 power divider cascaded with two sub-rectifiers. The two sub-rectifying circuits are designed to obtain maximum RF-dc conversion efficiency at different input power levels. By combining the two subrectifiers using a power divider, the proposed rectifier has two peak power conversion efficiencies (PCEs) and thus the high-efficiency PCE range can be extended. Moreover, at the same input power levels, the proposed rectifier can maintain nearly the same or even higher PCE than the single one. For validation, the proposed rectifier is implemented and the results are presented.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114239383","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 novel UWB bandpass filter based on quadruple-mode resonator 一种基于四模谐振器的新型超宽带带通滤波器
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164521
Daotong Li, Yonghong Zhang, Cong Tang, K. Song, Yong Fan
{"title":"A novel UWB bandpass filter based on quadruple-mode resonator","authors":"Daotong Li, Yonghong Zhang, Cong Tang, K. Song, Yong Fan","doi":"10.1109/IEEE-IWS.2015.7164521","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164521","url":null,"abstract":"A quadruple-mode resonator based on stub-loaded was proposed. The resonator possesses four resonances over the wide frequency band from 3.1-10.6 GHz, which can be employed to implement an ultra-wideband bandpass filter(BPF) to achieve flat response. The quadruple-mode resonator is investigated by using odd-even mode analysis and weak coupling method. Two transmission zeroes are located at the upper and lower stopband which improve the selectivity of the UWB BPF. The six transmission poles in passband are created by the quadruple modes resonator and the interdigital coupled feedlines. For verification, a UWB BPF is designed, fabricated and measured. Good agreement is observed between measured and simulated results.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122005033","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 double-sided rectenna design for RF energy harvesting 用于射频能量收集的双面整流天线设计
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164617
Jun Zhang, Zhi P. Wu, Chengguo Liu, Bin Zhang, Bohan Zhang
{"title":"A double-sided rectenna design for RF energy harvesting","authors":"Jun Zhang, Zhi P. Wu, Chengguo Liu, Bin Zhang, Bohan Zhang","doi":"10.1109/IEEE-IWS.2015.7164617","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164617","url":null,"abstract":"This paper presents a novel wideband high gain rectenna (rectifying antenna) for RF energy harvesting. The proposed device consists of a double-sided antenna, a low-pass filter and a doubling rectifying circuit using Shottcky diodes as rectifying elements. It works over the frequency range from 1.9 to 3.2 GHz. The simulated results demonstrate that the maximum rectenna conversion efficiency is nearly 70% around 2.4 GHz with the incident power density of 50 μW/cm2. The overall rectenna conversion efficiency within the operational bandwidth is greater than 50%.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122005498","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: 9
Broadband power amplifier linearity enhancement under carrier aggregated stimulus using an auxiliary impedance branch 利用辅助阻抗支路增强载波聚合刺激下的宽带功率放大器线性度
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164586
Yushi Hu, H. Sarbishaei, S. Boumaiza
{"title":"Broadband power amplifier linearity enhancement under carrier aggregated stimulus using an auxiliary impedance branch","authors":"Yushi Hu, H. Sarbishaei, S. Boumaiza","doi":"10.1109/IEEE-IWS.2015.7164586","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164586","url":null,"abstract":"High impedance at the drain of a transistor at low frequencies can cause significant distortions in power amplifiers (PAs). This problem is exacerbated by concurrent dual-band signal transmissions required by carrier aggregation. In this paper a technique is proposed which uses a parallel auxiliary impedance branch at the transistor's drain node to maintain low drain impedance for an extensive range of low frequencies, thus improving the PA's linearity and linearizability while it is under dual-band signal transmission.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134045140","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 V-band radiometer MMIC for geostationary atmospheric 地球静止大气v波段辐射计MMIC
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164584
Tang Liu, Kewu Han, Yu Ye, Jian Zhang
{"title":"A V-band radiometer MMIC for geostationary atmospheric","authors":"Tang Liu, Kewu Han, Yu Ye, Jian Zhang","doi":"10.1109/IEEE-IWS.2015.7164584","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164584","url":null,"abstract":"This paper presents the design and characterization of a V-band radiometer MMIC with 0.10 μm GaAs pHEMT technology. The circuit includes a resistive image reject mixer and a ×4 frequency multiplier LO chain. The ×4 frequency multiplier gives higher than 5 dBm output power over 48-56 GHz. The CL (Conversion loss) of the radiometer measured as an average of 8.5 dB with ripple less than 0.4 dB. The circuit also exhibits very good IMR (image rejection ratio) of higher than 30 dB.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134255435","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
Optimal location of the base station based on measured interference power 基于测量的干扰功率确定基站的最优位置
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164508
S. Shao, Qingpeng Liang, Kai Deng, Youxi Tang
{"title":"Optimal location of the base station based on measured interference power","authors":"S. Shao, Qingpeng Liang, Kai Deng, Youxi Tang","doi":"10.1109/IEEE-IWS.2015.7164508","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164508","url":null,"abstract":"Based on the measured interference power, the optimal location of the base station is obtained by minimizing the sum of the ratio of the interference power to the signal power for all interesting points in the downlink. Especially, a closed-form solution is derived when the path loss exponent is 2. The results show that the optimal base station location is closer to the major interference area.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134332936","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: 6
A broadband high efficiency Class-F power amplifier design using GaAs HEMT 一种基于GaAs HEMT的宽带高效f类功率放大器设计
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164618
Ji Lan, Jianyi Zhou, Zhiqiang Yu, Binqi Yang
{"title":"A broadband high efficiency Class-F power amplifier design using GaAs HEMT","authors":"Ji Lan, Jianyi Zhou, Zhiqiang Yu, Binqi Yang","doi":"10.1109/IEEE-IWS.2015.7164618","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164618","url":null,"abstract":"This work reveals the design for broadband GaAs Class-F power amplifier employed in terminal applications. The approximated continuous Class-F mode was analyzed and applied to GaAs device. A harmonic matching network was used to realize a broadband fundamental load impedance match while the second and third harmonic impedance are kept inside the high-efficiency region on the edge of the Smith chart. The second harmonic source impedance was also matched to improve the efficiency. The amplifier was fabricated using a 1-W GaAs HEMT device, achieved a power added efficiency above 60% from 1.3-2.1 GHz, with output power greater than 30-31.77 dBm. The maximum power added efficiency and drain efficiency are 75.26% and 81.94% respectively. The amplifier also maintained a high drain efficiency over 50% at 8-dB power back-off point. A comparison shows that this amplifier exceeds other reported GaAs Class-F power amplifiers in terms of bandwidth while high output power and efficiency are maintained.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132930345","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
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