Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725483
Y. Tawk, J. Costantine, C. Christodoulou
This paper presents an antenna scheme suitable for cognitive radio applications. A UWB sensing antenna and a frequency reconfigurable communicating antenna are incorporated together into the same antenna substrate. The UWB antenna searches for available spectrum holes while the reconfigurable antenna simultaneously tunes its operating frequency to the corresponding frequency determined by the sensing antenna. A new technique to achieve the required frequency reconfigurability is implemented via a rotational motion of a series of antenna patches. This eliminates the use of any bias lines as with the case of RF MEMs, PIN diodes and lumped elements. A prototype antenna was fabricated to test the proposed method. In the fabricated prototype, a stepper motor is incorporated and controlled via a computer. The use of this antenna structure in a cognitive radio communication link is demonstrated.
{"title":"A rotatable reconfigurable antenna for cognitive radio applications","authors":"Y. Tawk, J. Costantine, C. Christodoulou","doi":"10.1109/RWS.2011.5725483","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725483","url":null,"abstract":"This paper presents an antenna scheme suitable for cognitive radio applications. A UWB sensing antenna and a frequency reconfigurable communicating antenna are incorporated together into the same antenna substrate. The UWB antenna searches for available spectrum holes while the reconfigurable antenna simultaneously tunes its operating frequency to the corresponding frequency determined by the sensing antenna. A new technique to achieve the required frequency reconfigurability is implemented via a rotational motion of a series of antenna patches. This eliminates the use of any bias lines as with the case of RF MEMs, PIN diodes and lumped elements. A prototype antenna was fabricated to test the proposed method. In the fabricated prototype, a stepper motor is incorporated and controlled via a computer. The use of this antenna structure in a cognitive radio communication link is demonstrated.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116177363","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}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725512
H. Choi, Ji-Seon Paek, Hyun-Yong Lee, Songcheol Hong
This paper presents a digitally controlled envelope modulator with low code-AM distortion that can be used as a building block in a digital to RF polar transmitter. The RF envelope signal modulation is performed by digitally controlling the number of activated unit amplifier cells. The phase modulated LO input signal drives a switching transistor gate of the each cell. The 8-bit cell array has 63 unary-weighted cells for MSB 6 bits and 3 segmented unary-weighted cells for LSB 2 bits. Low code-AM distortion is achieved by introducing a current source below the switch transistor in the unit cell. A Class E output matching network is used for the high drain efficiency. The proposed modulator delivers 4.91-dBm peak output power at 970MHz with the power consumption of 28.4mW. An EDGE signal is applied to demonstrate the dynamic operations. It is fabricated in 0.13µm CMOS process and the chip size without pad is 380um Χ770um.
本文提出了一种具有低编码-调幅失真的数字控制包络调制器，可作为数字-射频极向发射机的基本组成部分。射频包络信号调制是通过数字控制激活的单元放大器单元的数量来实现的。相位调制的LO输入信号驱动每个单元的开关晶体管栅极。8位单元阵列为msb6位具有63个一元加权单元，为lsb2位具有3个分段一元加权单元。低码调幅失真是通过在单元格的开关晶体管下面引入电流源实现的。采用E类输出匹配网络，漏极效率高。所提出的调制器在970MHz时提供4.91 dbm的峰值输出功率，功耗为28.4mW。应用EDGE信号来演示动态操作。它采用0.13 μ m CMOS工艺制造，芯片尺寸为380um Χ770um。
{"title":"Digitally controlled envelope modulator for a polar transmitter with low code-AM distortion","authors":"H. Choi, Ji-Seon Paek, Hyun-Yong Lee, Songcheol Hong","doi":"10.1109/RWS.2011.5725512","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725512","url":null,"abstract":"This paper presents a digitally controlled envelope modulator with low code-AM distortion that can be used as a building block in a digital to RF polar transmitter. The RF envelope signal modulation is performed by digitally controlling the number of activated unit amplifier cells. The phase modulated LO input signal drives a switching transistor gate of the each cell. The 8-bit cell array has 63 unary-weighted cells for MSB 6 bits and 3 segmented unary-weighted cells for LSB 2 bits. Low code-AM distortion is achieved by introducing a current source below the switch transistor in the unit cell. A Class E output matching network is used for the high drain efficiency. The proposed modulator delivers 4.91-dBm peak output power at 970MHz with the power consumption of 28.4mW. An EDGE signal is applied to demonstrate the dynamic operations. It is fabricated in 0.13µm CMOS process and the chip size without pad is 380um Χ770um.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121964488","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}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725493
Zhebin Wang, J. Jang, Chan-Wang Park
This paper presents a method by using resonators to design a tri-band Wilkinson power divider. We employ the conventional Wilkinson power divider structure working at higher frequency f1 (2.5GHz) as the basic design. In order to achieve good performance of the other two frequencies, we use an open-circuit stub connected with a resonator for the middle frequency f2 (1.5GHz) and cascade another one with the same idea for the lower frequency f3 (1GHz). By applying this kind of frequency control element (stubs with resonators) in a π -shaped structure and putting them inside the conventional Wilkinson divider, topology keeps the compactness. Applications of three distinctive bands for Wilkinson power divider are analyzed by employing 2.5D EM simulator and these results are in agreement with measured ones.
{"title":"Tri-band Wilkinson power divider using resonators","authors":"Zhebin Wang, J. Jang, Chan-Wang Park","doi":"10.1109/RWS.2011.5725493","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725493","url":null,"abstract":"This paper presents a method by using resonators to design a tri-band Wilkinson power divider. We employ the conventional Wilkinson power divider structure working at higher frequency f1 (2.5GHz) as the basic design. In order to achieve good performance of the other two frequencies, we use an open-circuit stub connected with a resonator for the middle frequency f2 (1.5GHz) and cascade another one with the same idea for the lower frequency f3 (1GHz). By applying this kind of frequency control element (stubs with resonators) in a π -shaped structure and putting them inside the conventional Wilkinson divider, topology keeps the compactness. Applications of three distinctive bands for Wilkinson power divider are analyzed by employing 2.5D EM simulator and these results are in agreement with measured ones.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122445467","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}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725509
Walid Y. Zibideh, M. Matalgah
Due to the fact that wireless channels are an open medium to intruders and their attacks, encryption is a vital process to assure security over these channels. However, using well-known encryption algorithms to encrypt data in wireless communication will result in a catastrophic error due to the avalanche effect, which is implemented in these algorithms to assure security. Although this effect is desirable to assure security, these algorithms do not take into account the bit error characteristics of the wireless channel. Therefore, if an error occurs in the encrypted data over the channel, the decryption process at the receiver will result in half the original bits to be in error due to the avalanche effect. So the need for a new secure encryption algorithm that takes into account the bit error characteristics of wireless channels becomes necessary. In this paper, we propose a modification to the Data Encryption Standard (DES) to make it secure and prone to the bit errors caused by the wireless channel. We observe that using the modified algorithm in wireless channels, improves the bit error rate (BER) performance as well as security compared to DES.
{"title":"Modified-DES encryption algorithm with improved BER performance in wireless communication","authors":"Walid Y. Zibideh, M. Matalgah","doi":"10.1109/RWS.2011.5725509","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725509","url":null,"abstract":"Due to the fact that wireless channels are an open medium to intruders and their attacks, encryption is a vital process to assure security over these channels. However, using well-known encryption algorithms to encrypt data in wireless communication will result in a catastrophic error due to the avalanche effect, which is implemented in these algorithms to assure security. Although this effect is desirable to assure security, these algorithms do not take into account the bit error characteristics of the wireless channel. Therefore, if an error occurs in the encrypted data over the channel, the decryption process at the receiver will result in half the original bits to be in error due to the avalanche effect. So the need for a new secure encryption algorithm that takes into account the bit error characteristics of wireless channels becomes necessary. In this paper, we propose a modification to the Data Encryption Standard (DES) to make it secure and prone to the bit errors caused by the wireless channel. We observe that using the modified algorithm in wireless channels, improves the bit error rate (BER) performance as well as security compared to DES.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121250781","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}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725443
C. Lévy-Bencheton, Doreid Ammar, G. Villemaud, T. Risset
Relaying provides one of the most interesting solutions to reduce the energy consumption for both the terminals and the network. However, energy evaluation requires a high degree of realism. This paper introduces a realistic energy model to evaluate the energy consumption of multi-mode Software Defined Radios terminals, from a physical layer point of view. It explains the development of multi-mode modules for WSNet, a precise network simulator. It presents WSNet as a pertinent tool to evaluate the energy consumption of an 802.15.4-to-802.11g relay, and shows that multi-mode relaying does not always lead to energy reductions.
{"title":"Multi-mode relay simulations: An energy evaluation on WSNet","authors":"C. Lévy-Bencheton, Doreid Ammar, G. Villemaud, T. Risset","doi":"10.1109/RWS.2011.5725443","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725443","url":null,"abstract":"Relaying provides one of the most interesting solutions to reduce the energy consumption for both the terminals and the network. However, energy evaluation requires a high degree of realism. This paper introduces a realistic energy model to evaluate the energy consumption of multi-mode Software Defined Radios terminals, from a physical layer point of view. It explains the development of multi-mode modules for WSNet, a precise network simulator. It presents WSNet as a pertinent tool to evaluate the energy consumption of an 802.15.4-to-802.11g relay, and shows that multi-mode relaying does not always lead to energy reductions.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124163013","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}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725490
M. Bykowski, D. Tracey, B. Graham, N. Timmons, J. Morrison
A topology governs the logical connectivity between the nodes in the network. Development of Wireless Body Area Networks (WBANs) requires applying tailored technologies to countermeasure the effects of wireless propagation while satisfying constrains imposed by hardware. Important part of this process is topology selection as it affects the development of the entire network protocol stack. For example, use of a star or point-to-point topology removes the need for using routing as required by other topologies such as mesh. Therefore in this paper we propose a novel method of topology selection for BANs that we refer to as a topology selection schema. The schema identifies and discusses a broad range of parameters that should be considered in topology selection and then proposes a topology selection schema. The schema determines the values of those parameters by comparing them against a given set of assumptions on the use of the network, e.g. use case scenario, environmental conditions, device and traffic related parameters. Then it reduces them into a set of concise parameters, which can be easily used to assess the suitability of given topologies.
{"title":"A schema for the selection of network topology for Wireless Body Area Networks","authors":"M. Bykowski, D. Tracey, B. Graham, N. Timmons, J. Morrison","doi":"10.1109/RWS.2011.5725490","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725490","url":null,"abstract":"A topology governs the logical connectivity between the nodes in the network. Development of Wireless Body Area Networks (WBANs) requires applying tailored technologies to countermeasure the effects of wireless propagation while satisfying constrains imposed by hardware. Important part of this process is topology selection as it affects the development of the entire network protocol stack. For example, use of a star or point-to-point topology removes the need for using routing as required by other topologies such as mesh. Therefore in this paper we propose a novel method of topology selection for BANs that we refer to as a topology selection schema. The schema identifies and discusses a broad range of parameters that should be considered in topology selection and then proposes a topology selection schema. The schema determines the values of those parameters by comparing them against a given set of assumptions on the use of the network, e.g. use case scenario, environmental conditions, device and traffic related parameters. Then it reduces them into a set of concise parameters, which can be easily used to assess the suitability of given topologies.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130764427","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}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725424
Seung Jun Lee, J. Ha, Jeawook Shin, Hyunchol Shin, Y. Eo
A fully integrated tuner IC based on low-IF architecture is developed for triple-band FM/T-DMB/DAB applications. A precise RF gain control with 50 dB dynamic range is achieved in RF VGA by employing a capacitive ladder type attenuator. A novel coarse tuning scheme based on a RF frequency-to-digital converter allows fast and agile automatic VCO frequency calibration, leading to fast locking in PLL. Implemented in 0.13 µm CMOS, the tuner consumes 57 mA from 1.2 V supply. Measured results are NF < 1.5 dB at the maximum gain and IIP3 > 0 dBm with LNA bypassed. The integrated phase noise of ΔΣ fractional-N PLL is less than 1 rms degree, and the coarse tuning time is less than 2.03 µsec.
{"title":"A CMOS mobile TV tuner with precise RF gain control and fast locking PLL for multiband FM/T-DMB/DAB applications","authors":"Seung Jun Lee, J. Ha, Jeawook Shin, Hyunchol Shin, Y. Eo","doi":"10.1109/RWS.2011.5725424","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725424","url":null,"abstract":"A fully integrated tuner IC based on low-IF architecture is developed for triple-band FM/T-DMB/DAB applications. A precise RF gain control with 50 dB dynamic range is achieved in RF VGA by employing a capacitive ladder type attenuator. A novel coarse tuning scheme based on a RF frequency-to-digital converter allows fast and agile automatic VCO frequency calibration, leading to fast locking in PLL. Implemented in 0.13 µm CMOS, the tuner consumes 57 mA from 1.2 V supply. Measured results are NF < 1.5 dB at the maximum gain and IIP3 > 0 dBm with LNA bypassed. The integrated phase noise of ΔΣ fractional-N PLL is less than 1 rms degree, and the coarse tuning time is less than 2.03 µsec.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116548930","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}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725429
Jin-Fa Chang, Yo‐Sheng Lin
A DC-10.5-GHz CMOS distributed amplifier (DA) with flat and low noise figure (NF), flat and high power gain (S21), and small group delay variation using standard 0.18 µm CMOS technology is demonstrated. Flat and low NF was achieved by adopting the proposed RLC terminal network with 140 Ω terminal resistance at dc and very high frequencies (instead of the traditional 50 Ω terminal resistance or the recently proposed RL terminal network) for the gate transmission line, and a slightly under-damped Q-factor for the second-order NF frequency response. Besides, flat and high S21 was achieved by using cascoded transistors as the gain cell. Over the DC-10.5-GHz band, the DA consumed 29.16 mW and achieved flat and high S21 of 10.5±1.4 dB, flat and low NF of 3.2±0.3 dB, and excellent phase linearity (the group delay variation was only ±13.8 ps), one of the best NF and phase linearity results ever reported for a CMOS DA or wideband LNA with bandwidth greater 7.5 GHz.
{"title":"A DC-10.5-GHz CMOS Distributed Amplifier with 3.2±0.3 dB NF, 10.5±1.4 dB Gain and ±13.8 ps Group Delay Variation","authors":"Jin-Fa Chang, Yo‐Sheng Lin","doi":"10.1109/RWS.2011.5725429","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725429","url":null,"abstract":"A DC-10.5-GHz CMOS distributed amplifier (DA) with flat and low noise figure (NF), flat and high power gain (S21), and small group delay variation using standard 0.18 µm CMOS technology is demonstrated. Flat and low NF was achieved by adopting the proposed RLC terminal network with 140 Ω terminal resistance at dc and very high frequencies (instead of the traditional 50 Ω terminal resistance or the recently proposed RL terminal network) for the gate transmission line, and a slightly under-damped Q-factor for the second-order NF frequency response. Besides, flat and high S21 was achieved by using cascoded transistors as the gain cell. Over the DC-10.5-GHz band, the DA consumed 29.16 mW and achieved flat and high S21 of 10.5±1.4 dB, flat and low NF of 3.2±0.3 dB, and excellent phase linearity (the group delay variation was only ±13.8 ps), one of the best NF and phase linearity results ever reported for a CMOS DA or wideband LNA with bandwidth greater 7.5 GHz.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132802572","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}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725500
E. Martin
We study the feasibility of multimode radio fingerprinting for indoor localization with smart phones. Leveraging the sensing capabilities of these devices (WiFi radio, cellular communications radio, accelerometer, magnetometer), we present an application integrating both offline and online phases of fingerprinting in the same smart phone, and delivering an accuracy of up to 1.5 meters. Moreover, a new approach for the statistical processing of radio signal strengths is utilized, showing that it can outperform existing deterministic techniques. We also examine the possibilities offered by Digital TV (DTV), with the intention to build a multimodal solution for localization.
{"title":"Multimode radio fingerprinting for localization","authors":"E. Martin","doi":"10.1109/RWS.2011.5725500","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725500","url":null,"abstract":"We study the feasibility of multimode radio fingerprinting for indoor localization with smart phones. Leveraging the sensing capabilities of these devices (WiFi radio, cellular communications radio, accelerometer, magnetometer), we present an application integrating both offline and online phases of fingerprinting in the same smart phone, and delivering an accuracy of up to 1.5 meters. Moreover, a new approach for the statistical processing of radio signal strengths is utilized, showing that it can outperform existing deterministic techniques. We also examine the possibilities offered by Digital TV (DTV), with the intention to build a multimodal solution for localization.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"78 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134426876","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}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725463
Karthik Tripurari, M. Banu, P. Kinget
A digitally controlled frequency-doubling phase-shifter architecture is presented for the implementation of multiple-antenna GHz transceiver systems. It takes a 1.75GHz input and produces two phase-shifted outputs at 3.5GHz. It consists of a Delay Locked Loop (DLL) followed by symmetric XOR frequency doublers and phase interpolators. The phase shifter prototype in 90nm standard CMOS has a phase shift range of 360° with a resolution of 22.5° and an INL < 12° (< 4° with external adjust), and consumes 55mW from a 1V supply.
{"title":"A digitally controlled CMOS phase shifter with frequency doubling for multiple-antenna, direct-conversion transceiver systems","authors":"Karthik Tripurari, M. Banu, P. Kinget","doi":"10.1109/RWS.2011.5725463","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725463","url":null,"abstract":"A digitally controlled frequency-doubling phase-shifter architecture is presented for the implementation of multiple-antenna GHz transceiver systems. It takes a 1.75GHz input and produces two phase-shifted outputs at 3.5GHz. It consists of a Delay Locked Loop (DLL) followed by symmetric XOR frequency doublers and phase interpolators. The phase shifter prototype in 90nm standard CMOS has a phase shift range of 360° with a resolution of 22.5° and an INL < 12° (< 4° with external adjust), and consumes 55mW from a 1V supply.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131690212","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}
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