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2014 IEEE International Wireless Symposium (IWS 2014)最新文献

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An injection-locked frequency doubler with improved odd-order spur suppression 一种改进奇阶杂散抑制的注入锁定倍频器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864245
Bangan Liu, Shengxi Diao, F. Lin
{"title":"An injection-locked frequency doubler with improved odd-order spur suppression","authors":"Bangan Liu, Shengxi Diao, F. Lin","doi":"10.1109/IEEE-IWS.2014.6864245","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864245","url":null,"abstract":"This paper presents a novel injection-locked frequency doubler (ILFD) with good odd-order harmonic rejection ratio (HRR). By utilizing a pair of complementary input signals, the odd-order harmonics are cancelled out effectively after current summation, leaving the even-order harmonic components unaffected. This technique is easy to implement, effective, frequency-independent, and suitable for wide-band operation. Theoretically all the odd-order HRRs could be improved simultaneously. As a concept design, a 7 GHz ILFD is implemented in 180nm CMOS process. From post-layout simulation, odd-order HRRs achieved improvements of more than 30 dB.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116743450","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 millimeter-wave 0.18-μm BiCMOS dual-band power amplifier 毫米波0.18 μm BiCMOS双频功率放大器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864205
C. Huynh, J. Bae, C. Nguyen
{"title":"A millimeter-wave 0.18-μm BiCMOS dual-band power amplifier","authors":"C. Huynh, J. Bae, C. Nguyen","doi":"10.1109/IEEE-IWS.2014.6864205","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864205","url":null,"abstract":"A 0.18-μm SiGe BiCMOS concurrent dual-band power amplifier (PA) was developed. The PA can work in concurrent dual-band mode at 25.5 and 37 GHz as well as single-band mode at 25.5 or 37 GHz. The measured results show that, in the single-band mode, the dual-band PA exhibits gain of 21.4 and 17 dB, maximum output power of 16 and 13 dBm, and maximum power added efficiency (PAE) of 10.6 % and 4.9 % at 25.5 and 37 GHz, respectively. In the dual-band mode, the maximum output power is 13 and 9.5 dBm at 25.5 and 37 GHz, respectively, and the total maximum PAE is 7.1 %. The concurrent dual-band PA has a chip size of 1.3 × 0.68 mm2 and consumes a dc current of 120 mA from a 3-V supply voltage.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125983699","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 hybrid method for flat-passband filter with nonuniform Q resonators and predistortion 具有非均匀Q谐振腔和预失真的平通带滤波器的混合方法
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864212
Liang-Feng Qiu, Linsheng Wu, W. Yin
{"title":"A hybrid method for flat-passband filter with nonuniform Q resonators and predistortion","authors":"Liang-Feng Qiu, Linsheng Wu, W. Yin","doi":"10.1109/IEEE-IWS.2014.6864212","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864212","url":null,"abstract":"A new synthesis method is proposed for the design of high-performance parallel connected lossy filters. Compared with the nonuniform Q method, where the Q distribution is determined by the sensitivities of a preset coupling matrix, our method can provide a flat passband with flexible combination of nonuniform Q resonators by utilizing the predistortion technique with an adaptive offset. Two generalized Chebyshev filters with different specific Q-factors are designed with the negative and positive distortion offsets. The proposed hybrid method has been validated by the perfect passband flatness achieved with both of them.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130121457","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
Equivalent circuit modeling of slow wave coplanar strips for millimeter wave applications 毫米波应用中慢波共面带的等效电路建模
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864200
Wenjuan Zhang, Guiqiang Zhu, Liguo Sun, F. Lin
{"title":"Equivalent circuit modeling of slow wave coplanar strips for millimeter wave applications","authors":"Wenjuan Zhang, Guiqiang Zhu, Liguo Sun, F. Lin","doi":"10.1109/IEEE-IWS.2014.6864200","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864200","url":null,"abstract":"Slow wave coplanar strips are fundamental elements in millimeter wave application. Based on four port scattering parameters, an equivalent lumped model is presented recovering the frequency independent parameters up to 110 GHz. The model parameters are generated based on two independent modes that propagate in two uniformly coupled propagating systems. All the coupling effects are considered. And no further fitting or optimization is required. The extracted SPICE-compatible model is validated by 65nm CMOS technology slow wave coplanar strips. We compare four port S-parameters. A very close agreement is obtained. The model is useful for various design applications.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132061219","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
Frequency and pattern reconfigurable annular slot antenna with two feeding ports 带两个馈电端口的频率和方向可重构环形槽天线
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864184
N. Kou, Long Li
{"title":"Frequency and pattern reconfigurable annular slot antenna with two feeding ports","authors":"N. Kou, Long Li","doi":"10.1109/IEEE-IWS.2014.6864184","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864184","url":null,"abstract":"A new frequency and pattern reconfigurable antenna is proposed in this paper. Both frequency and pattern reconfigurations are effectively realized by using the microstrip double fed ports and four PIN diodes on the annular slot. At the low frequency band (1800MHz) and high frequency band(2400MHz), the antenna has four different patterns which are almost omnidirectional scanning and can be used to next generation wireless communication system. The measurement results are in good agreement with simulation results.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131670410","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 novel method for RF device's contact test 一种射频器件接触测试的新方法
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864198
Cheng-Nan Hu, Kai-Hong Jeng, Wen-Ju Chen, Hsuan-Chung Ko
{"title":"A novel method for RF device's contact test","authors":"Cheng-Nan Hu, Kai-Hong Jeng, Wen-Ju Chen, Hsuan-Chung Ko","doi":"10.1109/IEEE-IWS.2014.6864198","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864198","url":null,"abstract":"A novel method for RF device's contact test is proposed to improve the yield of the RFIC test employing test less technique. An equivalent circuit for modeling the RF device incorporating RF traces with contact impedance is applied for theoretical analysis of prototype design. Measured data of RF devices testing attained in production runs precisely address the contact issue using the novel methodology present here.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122822971","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
Accurate mutual coupling calibration method for adaptive arrays with wide adaptability for element structures 对单元结构具有广泛适应性的自适应阵列精确互耦合定标方法
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864202
Qiulin Huang, Hongxing Zhou, J. Bao, Xiao-wei Shi
{"title":"Accurate mutual coupling calibration method for adaptive arrays with wide adaptability for element structures","authors":"Qiulin Huang, Hongxing Zhou, J. Bao, Xiao-wei Shi","doi":"10.1109/IEEE-IWS.2014.6864202","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864202","url":null,"abstract":"The element pattern reconstruction method is proposed to calibrate the mutual coupling effect of adaptive arrays. The new method is characterized by the wide adaptability for element structures and high accurate calibration of mutual coupling effects. In the development of the new method, the relationship between the element patterns in the isolated state and those in the embedded state is established, and the calibration matrix is obtained by transforming the element patterns of the array. Two compact arrays composed of dipoles and microstrip antennas are designed to testify the effectiveness of the new method. For both arrays, more accurate DOA estimations are obtained due to the element pattern reconstruction method.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"9 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122954156","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
FPGA implemented multi-level IFPWM power coding for class-S PA in an all-digital GHz LTE transmitter FPGA实现了全数字GHz LTE发射机s类PA的多级IFPWM功率编码
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864227
Qiuyao Zhu, R. Ma, C. Duan, K. Yamanaka, K. Teo
{"title":"FPGA implemented multi-level IFPWM power coding for class-S PA in an all-digital GHz LTE transmitter","authors":"Qiuyao Zhu, R. Ma, C. Duan, K. Yamanaka, K. Teo","doi":"10.1109/IEEE-IWS.2014.6864227","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864227","url":null,"abstract":"This work presents a new efficient multi-level intermediate frequency pulse width modulation (ML-IFPWM) power coding algorithm for switch-mode power amplifier. The merits of high power coding efficiency with distortion correction function are demonstrated by a FPGA implemented digital front end. Measurement results have shown power coding efficiency greater than 45%. To our knowledge, this is the firstly reported implemented discrete-time domain 3-level power encoding approach with 5-MHz LTE signal at RF carrier frequency around 2 GHz. This can be used to generate multi-level digital pulse-train for advanced class-S PA in cellular digital base stations.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127307408","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
Electromagnetic field exposure may influence the apoptosis rate of human cell cultures 电磁场暴露可能影响人细胞培养物的凋亡率
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864259
Xiao Chen, Shouyan Wang, Peter S W Leung
{"title":"Electromagnetic field exposure may influence the apoptosis rate of human cell cultures","authors":"Xiao Chen, Shouyan Wang, Peter S W Leung","doi":"10.1109/IEEE-IWS.2014.6864259","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864259","url":null,"abstract":"Electromagnetic (EM) energy has been commonly adopted in our daily lives in recent decades; human safety issues of EM waves have continuously been a concern to the public. Look directly into the human cells to define the radiation and emission requirements for human safety, experiments have been conducted, pioneering the biomedical impact of Electromagnetic radiation exposure to cell cultures. This project aims at an original investigation on the effect of human cell cultures exposed to certain EM fields, the apoptosis rate was studied. Both the homogeneous magnetic field and 1.8GHz exposure system were set up. Several cells were used in the magnetic field for 48hours, the apoptosis rate of all the treated cells are significantly higher than controlled cells. In 1.8GHz EM fields, Hela cells were exposure for 24 and 48hours, we can find there is an increase in apoptosis rate in the second 24 hour. While the necrosis remained stable. From the results, we may conclude that under EM field exposure, human tumor cells will induce apoptosis.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123226979","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
Green RF technologies for 5G networks 5G网络的绿色射频技术
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864188
C. Rowell, Shuangfeng Han, Zhikun Xu, I. C. Lin
{"title":"Green RF technologies for 5G networks","authors":"C. Rowell, Shuangfeng Han, Zhikun Xu, I. C. Lin","doi":"10.1109/IEEE-IWS.2014.6864188","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864188","url":null,"abstract":"By focusing on the co-design of spectral efficiency and energy efficiency, a new network architecture with both higher capacity and lower power consumption than existing networks is proposed. Through the use of a new network topology, green RF techniques using large scale antenna systems and full duplex radio are proposed as a means to reduce network energy consumption while increasing network capacity for future 5G networks.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"41 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120887222","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: 8
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