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Optimized design of harmonic-injection dividers 谐波注入分频器的优化设计
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830158
F. Ramírez, A. Suárez
{"title":"Optimized design of harmonic-injection dividers","authors":"F. Ramírez, A. Suárez","doi":"10.1109/RWS.2014.6830158","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830158","url":null,"abstract":"A new formulation is presented for the efficient harmonic-balance analysis of the division bandwidth of frequency dividers by a high order. The procedure is based on some mathematical properties of the solution curve under low-amplitude of the input generator. Through a simple fitting technique, it is possible to determine the variation of the synchronization bandwidth versus any design parameter, while keeping constant the central frequency of the division band. The procedure also enables a prediction of the frequency-division interval for any value of the input-generator amplitude within the region of linear behavior with respect to the input source. It has been applied to the optimization of the input matching network in a frequency divider by 10, which uses a nonlinear transmission line (NLTL) as a feedback network.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"37 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":"125424123","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 simple closed-form analysis of clapp oscillator output power using a novel quasi-linear transistor model 用一种新颖的准线性晶体管模型对克拉普振荡器输出功率进行了简单的封闭分析
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830073
Olli-Pekka Lundén, Kristian Konttinen, M. Hasani
{"title":"A simple closed-form analysis of clapp oscillator output power using a novel quasi-linear transistor model","authors":"Olli-Pekka Lundén, Kristian Konttinen, M. Hasani","doi":"10.1109/RWS.2014.6830073","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830073","url":null,"abstract":"Clapp oscillator output power is analyzed in closed form using a novel quasi-linear transistor model where the transadmittance is a function of base-to-emitter voltage amplitude. The function is easy to invert which makes the analysis considerably simpler than any other previously published closed-form approach. The proposed technique is validated by transistor and oscillator measurements and with harmonic balance simulation at 100 MHz.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"54 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":"124495102","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
A 5-level efficient IFPWM power coding approach encoding LTE for class-S digital-RF transmitter with distortion correction 一种5级高效IFPWM功率编码方法，用于s类数字射频发射机的LTE编码和失真校正
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830125
Qiuyao Zhu, R. Ma, C. Duan, Kenji Mukai, S. Shinjo, K. Teo
{"title":"A 5-level efficient IFPWM power coding approach encoding LTE for class-S digital-RF transmitter with distortion correction","authors":"Qiuyao Zhu, R. Ma, C. Duan, Kenji Mukai, S. Shinjo, K. Teo","doi":"10.1109/RWS.2014.6830125","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830125","url":null,"abstract":"In this work, for the first time we propose a multi-level intermediate frequency pulse width modulation (ML-IFPWM) power coding approach to generate a high speed pulse train as input of GHz class-S switch-mode PA in the digital-RF transmitter. The key feature of a high power coding efficiency of 68.5% from a 5-level digitally implemented discrete-time (DT)-PWM quantizer encoding 20-MHz LTE signal (PAR of 10.25-dB) is verified by simulation. Unlike the traditional RFPWM, this new power coding process taking place at IF frequency of 100 MHz, offers a higher over-sampling ratio thus resulting in an improved output spectrum purity. In addition, a look-up-table based linearization unit is introduced in the digital-RF transmitter architecture to specifically correct the distortion caused by the nonlinear transformation of power encoder. To the author's knowledge, this is the most efficient power coding approach in a digital implementation reported so far encoding 20-MHz LTE at 2 GHz with low EVM of 4.1%.","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":"123611730","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
A 5.5 GHz low-power PLL using 0.18-µm CMOS technology 采用0.18µm CMOS技术的5.5 GHz低功耗锁相环
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830071
Jeng‐Han Tsai, Shao-Wei Huang, Jian-Ping Chou
{"title":"A 5.5 GHz low-power PLL using 0.18-µm CMOS technology","authors":"Jeng‐Han Tsai, Shao-Wei Huang, Jian-Ping Chou","doi":"10.1109/RWS.2014.6830071","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830071","url":null,"abstract":"This paper presents a fully-integrated 5.5 GHz low-power consumption phase-locked loop (PLL) on standard 0.18-μm CMOS process. Utilizing the transformer feedback VCO and high speed true single phase clock (TSPC) divider, the 5.5 GHz PLL achieves low power consumption of 9.23 mW. In addition, a rail-to-rail buffer amplifier is incorporated between the VCO and TSPC divider chain to provide full voltage swing for TSPC input. The measured phase noises are -85 dBc/Hz and -116.6 dBc/Hz at 1 MHz and 10 MHz frequency offsets, respectively.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"68 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":"128366575","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
A tunable directional coupler with a wide tuning range of coupling ratios 一种可调谐的定向耦合器，具有宽调谐范围的耦合比率
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830088
Mi Zhou, Jin Shao, B. Arigong, H. Ren, Rongguo Zhou, Hualiang Zhang
{"title":"A tunable directional coupler with a wide tuning range of coupling ratios","authors":"Mi Zhou, Jin Shao, B. Arigong, H. Ren, Rongguo Zhou, Hualiang Zhang","doi":"10.1109/RWS.2014.6830088","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830088","url":null,"abstract":"A tunable microwave 90-degree directional coupler with a wide tuning range of coupling ratios is introduced in this paper. The architecture of this device is designed based on a fully symmetrical structure. Two varactor diodes loaded to the side of the device are used as the tuning elements. With different biasing voltage, the output power ratio between the two output ports (Port 2 and Port 3) can be easily tuned. During the tuning, very good isolation and low return loss are always kept. In the theoretical discussion, the general design equations are presented. Also, a sample circuit working at 1 GHz was made and tested to verify the design theory. The measurement results of the prototype show a good agreement with the design theory.","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":"114984340","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 and reduction of the impact of thermal noise on the Full-Duplex OFDM radio 热噪声对全双工OFDM无线电影响的分析与降低
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830094
Zhaowu Zhan, G. Villemaud, J. Gorce
{"title":"Analysis and reduction of the impact of thermal noise on the Full-Duplex OFDM radio","authors":"Zhaowu Zhan, G. Villemaud, J. Gorce","doi":"10.1109/RWS.2014.6830094","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830094","url":null,"abstract":"Self-Interference has been significantly reduced by current cancelation methods for the practical design of Full-Duplex wireless. However, the residual self-interference is still much stronger than the thermal noise due to many factors, e.g. phase noise in local oscillator, I/Q imbalance, thermal noise and so on, limiting the self-interference cancelation. In this paper, the influence of the thermal noise on the active self-interference cancelation (ASIC) for wideband Full-Duplex OFDM wireless system is analytically studied and demonstrated. We propose a little modification to the structure of data packet of IEEE 802.11g to reduce the impact of the thermal noise on the ASIC for Full-Duplex OFDM radio. The ADS-Matlab co-simulation results show that we can reduce the residual self-interference to only 1.5dB higher than the receiver thermal noise.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"38 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":"126027823","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: 24
Full-dimensional MIMO for future cellular networks 面向未来蜂窝网络的全维MIMO
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830145
S. Akoum, J. Acharya
{"title":"Full-dimensional MIMO for future cellular networks","authors":"S. Akoum, J. Acharya","doi":"10.1109/RWS.2014.6830145","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830145","url":null,"abstract":"Full-dimensional multiple input multiple output (FD-MIMO) is a practical implementation of massive MIMO in cellular communication systems. FD-MIMO relies on an active two-dimensional antenna grid at the base stations and harvests the benefits of both azimuth and elevation beamforming. This paper briefly introduces the concept of FD-MIMO, and surveys the recent research results and applications of active antenna systems (AAS) technology. The key concepts discussed range from antenna patterns and channel modeling to vertical sectorization and heterogeneous networks deployment. The paper focuses on the benefits of FD-MIMO in an urban environment with high rises and three-dimensional user deployment. It demonstrates the importance of FD-MIMO in enhancing the performance of cellular networks.","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":"125533967","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: 18
Low-loss, wideband SPDT switches and switched-line phase shifter in 180-nm RF CMOS on SOI technology 基于SOI技术的180nm RF CMOS低损耗、宽带SPDT开关和开关线移相器
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830161
A. Cardoso, P. Saha, P. Chakraborty, David M. Fleischhauer, J. Cressler
{"title":"Low-loss, wideband SPDT switches and switched-line phase shifter in 180-nm RF CMOS on SOI technology","authors":"A. Cardoso, P. Saha, P. Chakraborty, David M. Fleischhauer, J. Cressler","doi":"10.1109/RWS.2014.6830161","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830161","url":null,"abstract":"Low-loss, wideband (DC to 40 GHz) single-pole double-throw (SPDT) RF switches implemented in a 180 nm SOI CMOS technology are presented. A π-matching network is implemented to improve the insertion loss (IL) at high frequencies. The differences between the conventional inductive peaking and the matching network utilized here are discussed. Under nominal conditions, the IL of the 1.5 V switch is less than 0.5 dB from DC to 20 GHz; and less than 2.0 dB at 40 GHz. The input matching of the switch is better than 10 dB, the isolation (ISO) is greater than 15 dB, and the P1dB of the 1.5 V switch is 11 dBm. A higher voltage (2.5 V) switch implemented with high-breakdown devices increases the P1dB to 15 dBm at the cost of a small increase in IL. A switched-line one-bit 180° phase shifter (PS) is demonstrated using the 1.5 V low-loss switch. The PS exhibits an IL better than 3 dB at 18 GHz. The advantages of implementing a low-loss switch in a 180 nm technology are discussed.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"29 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":"126147009","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: 22
Energy efficiency of cooperative cognitive radio network with outage constraints 具有中断约束的协同认知无线网络的能量效率
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830080
M. Naeem, K. Illanko, A. Karmokar, A. Anpalagan, M. Jaseemuddin
{"title":"Energy efficiency of cooperative cognitive radio network with outage constraints","authors":"M. Naeem, K. Illanko, A. Karmokar, A. Anpalagan, M. Jaseemuddin","doi":"10.1109/RWS.2014.6830080","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830080","url":null,"abstract":"The power allocation in decode and forward (DF) relaying for cooperative cognitive radio network (CCRN) with an objective of maximizing energy efficiency (EE) is a constraint nonlinear non-convex fractional programming problem (CNNFPP). The optimization needs to satisfy the primary users interference constraints and secondary users outage constraints. We proposed the optimal power allocation in DF relaying by transforming the CNNFPP power allocation problem into a concave fractional program. We also present numerical results to demonstrate the effect of different network parameters on the EE of CCRN.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"42 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":"129116810","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
Measurement setup for linear characterization of a mixed-signal SoC wideband receiver 用于混合信号SoC宽带接收器线性特性的测量设置
2014 IEEE Radio and Wireless Symposium (RWS) Pub Date : 2014-06-12 DOI: 10.1109/RWS.2014.6830151
P. Cruz, D. Ribeiro, N. Carvalho
{"title":"Measurement setup for linear characterization of a mixed-signal SoC wideband receiver","authors":"P. Cruz, D. Ribeiro, N. Carvalho","doi":"10.1109/RWS.2014.6830151","DOIUrl":"https://doi.org/10.1109/RWS.2014.6830151","url":null,"abstract":"This paper presents a different framework for the characterization and modeling of single-chip mixed-signal system-on-chip (SoC) systems. In this approach a mixed-signal oscilloscope (MSO) in conjunction with external signal generators is used to mix together the information from both analog and digital domains as a way to maintain synchronism between the measured waveforms. The validity of the proposed test bench is then demonstrated by measuring the input analog reflection coefficient and transfer function parameters of a RF-to-digital SoC wideband receiver subsystem.","PeriodicalId":247495,"journal":{"name":"2014 IEEE Radio and Wireless Symposium (RWS)","volume":"12 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":"121110947","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
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