Pub Date : 2013-04-14DOI: 10.1109/IEEE-IWS.2013.6616800
M. Fahad, A. Srivastava, A. Sharma, C. Mayberry
In this work, an analytical current transport model of Graphene Nanoribbon (GNR) Tunnel Field Effect Transistor (T-FET) is presented considering drain source voltage (VDS), gate source voltage (VGS), carrier mobility (μ) and top gate dielectric (tOX). For a GNR width of 5nm at 0.275eV band gap, ON current of 1605 μA/μm is calculated with a very high ON/OFF current ratio of 107. Subthreshold slope of 7.07mV/decade is calculated from I-VGS transfer characteristics. Current saturation is observed for input voltage, VGS of 0.28V and beyond for varying VDS values. Performance of the proposed model is compared with the earlier published work and the projected 2011 ITRS MOSFET requirements and it is found that considering proper device geometry and input voltages, GNR T-FET can demonstrate seven times lower power dissipation and eight times higher intrinsic speed in the upper GHz range than in conventional CMOS technology.
{"title":"Current transport in graphene tunnel field effect transistor for RF integrated circuits","authors":"M. Fahad, A. Srivastava, A. Sharma, C. Mayberry","doi":"10.1109/IEEE-IWS.2013.6616800","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2013.6616800","url":null,"abstract":"In this work, an analytical current transport model of Graphene Nanoribbon (GNR) Tunnel Field Effect Transistor (T-FET) is presented considering drain source voltage (VDS), gate source voltage (VGS), carrier mobility (μ) and top gate dielectric (tOX). For a GNR width of 5nm at 0.275eV band gap, ON current of 1605 μA/μm is calculated with a very high ON/OFF current ratio of 107. Subthreshold slope of 7.07mV/decade is calculated from I-VGS transfer characteristics. Current saturation is observed for input voltage, VGS of 0.28V and beyond for varying VDS values. Performance of the proposed model is compared with the earlier published work and the projected 2011 ITRS MOSFET requirements and it is found that considering proper device geometry and input voltages, GNR T-FET can demonstrate seven times lower power dissipation and eight times higher intrinsic speed in the upper GHz range than in conventional CMOS technology.","PeriodicalId":344851,"journal":{"name":"2013 IEEE International Wireless Symposium (IWS)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123050814","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 : 2013-04-14DOI: 10.1109/IEEE-IWS.2013.6616791
V. Blaschke, A. Unikovski, R. Zwingman
This paper presents design and characterization results of an ultra-compact SP4T antenna switch fabricated in 3.3V CMOS thick-film SOI. Through “layout-driven” circuit design a small die size of 0.53 mm2 was achieved for a fully integrated switch die containing RF-section, I/O pads, ESD, decoder, level shifters and negative vss charge pump.
{"title":"An ultra-compact SP4T cellular antenna switch in 3.3V CMOS thick-film SOI","authors":"V. Blaschke, A. Unikovski, R. Zwingman","doi":"10.1109/IEEE-IWS.2013.6616791","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2013.6616791","url":null,"abstract":"This paper presents design and characterization results of an ultra-compact SP4T antenna switch fabricated in 3.3V CMOS thick-film SOI. Through “layout-driven” circuit design a small die size of 0.53 mm2 was achieved for a fully integrated switch die containing RF-section, I/O pads, ESD, decoder, level shifters and negative vss charge pump.","PeriodicalId":344851,"journal":{"name":"2013 IEEE International Wireless Symposium (IWS)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127131826","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 : 2013-04-14DOI: 10.1109/IEEE-IWS.2013.6616807
Mingjian Li, K. Luk
A novel wideband single-fed circularly polarized antenna is designed based on crossed magneto-electric dipoles. By adjusting the shapes and dimensions of the crossed electric dipoles and magnetic dipoles carefully, circularly polarized radiation can be inspired across a wide operation band. Measurements on an antenna prototype reveal that the proposed design achieves a wide impedance bandwidth of 73.3% for SWR≤2 and 46.6% for SWR≤1.5. A 3-dB axial ratio bandwidth of 47.7% and a gain of 6.8±1.8dBi are covered by the SWR≤1.5 band. Moreover, radiation patterns exhibit good unidirectional radiation characteristic over the whole operating frequency band.
{"title":"A new wideband single-fed circularly polarized antenna","authors":"Mingjian Li, K. Luk","doi":"10.1109/IEEE-IWS.2013.6616807","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2013.6616807","url":null,"abstract":"A novel wideband single-fed circularly polarized antenna is designed based on crossed magneto-electric dipoles. By adjusting the shapes and dimensions of the crossed electric dipoles and magnetic dipoles carefully, circularly polarized radiation can be inspired across a wide operation band. Measurements on an antenna prototype reveal that the proposed design achieves a wide impedance bandwidth of 73.3% for SWR≤2 and 46.6% for SWR≤1.5. A 3-dB axial ratio bandwidth of 47.7% and a gain of 6.8±1.8dBi are covered by the SWR≤1.5 band. Moreover, radiation patterns exhibit good unidirectional radiation characteristic over the whole operating frequency band.","PeriodicalId":344851,"journal":{"name":"2013 IEEE International Wireless Symposium (IWS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123694696","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 : 2013-04-14DOI: 10.1109/IEEE-IWS.2013.6616798
Win Lin, Q. Chu, Sen-Jing Yao
A simple and novel technique to improve the axial ratio of quadrifilar helix antenna (QHA) and widen its beam width is presented. By adding a cage which consists of a loop and 4 sticks, the axial ratio performance is greatly decreases at the low elevation and the beam width is widened. An antenna for CNSS (Compass Navigation Satellite System, 2.492GHz) application is realized based on the technique. The axial ratio is below 4dB at the elevation of 5° and the 3dB beam width increases to about 180°. Measured results are presented to validate the concept.
{"title":"Quadifilar helix antenna with cage for axial ratio improvement and wide beam characteristic","authors":"Win Lin, Q. Chu, Sen-Jing Yao","doi":"10.1109/IEEE-IWS.2013.6616798","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2013.6616798","url":null,"abstract":"A simple and novel technique to improve the axial ratio of quadrifilar helix antenna (QHA) and widen its beam width is presented. By adding a cage which consists of a loop and 4 sticks, the axial ratio performance is greatly decreases at the low elevation and the beam width is widened. An antenna for CNSS (Compass Navigation Satellite System, 2.492GHz) application is realized based on the technique. The axial ratio is below 4dB at the elevation of 5° and the 3dB beam width increases to about 180°. Measured results are presented to validate the concept.","PeriodicalId":344851,"journal":{"name":"2013 IEEE International Wireless Symposium (IWS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125677732","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 : 2013-04-14DOI: 10.1109/IEEE-IWS.2013.6616755
Ying-Ying Yang, Q. Chu, Jian‐Feng Li
A compact planar dual band-notched ultrawideband (UWB) MIMO antenna array is presented. The proposed antenna array consists of two same elements which act as 3.4/5.5GHz dual band-notched UWB antennas on a printed circuit board. The antenna array is fed by using two 50Ω coplanar waveguide (CPW) transmission lines with two feeding ports. By placing a central metal strip between two radiating elements, the mutual coupling can be reduced. The proposed antenna array is successfully simulated, designed, and measured showing broadband matched impedance, stable radiation patterns and constant gain in terms of isolation of |S21|<;-30dB. The calculated envelope correlation coefficient between two elements shows consistent diversity performance across the UWB bandwidth.
{"title":"Dual band-notched ultrawideband MIMO antenna array","authors":"Ying-Ying Yang, Q. Chu, Jian‐Feng Li","doi":"10.1109/IEEE-IWS.2013.6616755","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2013.6616755","url":null,"abstract":"A compact planar dual band-notched ultrawideband (UWB) MIMO antenna array is presented. The proposed antenna array consists of two same elements which act as 3.4/5.5GHz dual band-notched UWB antennas on a printed circuit board. The antenna array is fed by using two 50Ω coplanar waveguide (CPW) transmission lines with two feeding ports. By placing a central metal strip between two radiating elements, the mutual coupling can be reduced. The proposed antenna array is successfully simulated, designed, and measured showing broadband matched impedance, stable radiation patterns and constant gain in terms of isolation of |S21|<;-30dB. The calculated envelope correlation coefficient between two elements shows consistent diversity performance across the UWB bandwidth.","PeriodicalId":344851,"journal":{"name":"2013 IEEE International Wireless Symposium (IWS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116124078","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 : 2013-04-14DOI: 10.1109/IEEE-IWS.2013.6616742
Jin Shi, Jian‐Xin Chen, H. Tang, Li-Heng Zhou
Controllable common-mode transmission zero is proposed to improve the common-mode rejection ratio (CMRR) inside the differential-mode passband of differential bandpass filters. With the controllability of the common-mode transmission zero, the common-mode transmission zero can be moved into the frequency range of the differential-mode passband, and then the CMRR inside the differential-mode passband can be greatly improved. Two two-order filters using different resonators are designed to demonstrate the existence and controllability of the common-mode transmission zero. A four-order filter with two resistor-loaded stepped-impedance resonators (SIRs) and two resistor-loaded uniform impedance resonators (UIRs) are designed to get good selectivity of differential-mode passband and wide-band common-mode suppression besides the high CMRR inside the differential-mode passband. The design methodology and experimental results of the proposed filters are presented.
{"title":"Differential bandpass filter with high common-mode rejection ratio inside the differential-mode passband using controllable common-mode transmission zero","authors":"Jin Shi, Jian‐Xin Chen, H. Tang, Li-Heng Zhou","doi":"10.1109/IEEE-IWS.2013.6616742","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2013.6616742","url":null,"abstract":"Controllable common-mode transmission zero is proposed to improve the common-mode rejection ratio (CMRR) inside the differential-mode passband of differential bandpass filters. With the controllability of the common-mode transmission zero, the common-mode transmission zero can be moved into the frequency range of the differential-mode passband, and then the CMRR inside the differential-mode passband can be greatly improved. Two two-order filters using different resonators are designed to demonstrate the existence and controllability of the common-mode transmission zero. A four-order filter with two resistor-loaded stepped-impedance resonators (SIRs) and two resistor-loaded uniform impedance resonators (UIRs) are designed to get good selectivity of differential-mode passband and wide-band common-mode suppression besides the high CMRR inside the differential-mode passband. The design methodology and experimental results of the proposed filters are presented.","PeriodicalId":344851,"journal":{"name":"2013 IEEE International Wireless Symposium (IWS)","volume":"541 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114058546","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 : 2013-04-14DOI: 10.1109/IEEE-IWS.2013.6616790
Xiangrong Zhang, Xiaole Cui, Bo Wang, Chung-Len Lee
A high gain, wide band (2-10GHz) but low noise mixer is presented and demonstrated. It uses a Gilbert type folded structure with an active balun as the input trans-conductance stage and a PMOS switch stage. Because of the structure, each stage can be separately set its bias current to achieve high gain and low noise. The implemented circuit in the 0.18 um CMOS technology exhibits a high conversion gain (CG), 17.6 dB at 4 GHz and 8.1 dB at 10 GHz, a SSB noise figure (NF) of 15.6 dB, an IIP3 of -3.4 dBm to +2 dBm, and an isolation of RF-LO of -144 dB. The mixer power consumption is about 7.8 mW under a 1.8 V power supply.
{"title":"A high gain, wide band (2–10 GHz), and low noise active balun merged folded mixer for the full-band UWB application","authors":"Xiangrong Zhang, Xiaole Cui, Bo Wang, Chung-Len Lee","doi":"10.1109/IEEE-IWS.2013.6616790","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2013.6616790","url":null,"abstract":"A high gain, wide band (2-10GHz) but low noise mixer is presented and demonstrated. It uses a Gilbert type folded structure with an active balun as the input trans-conductance stage and a PMOS switch stage. Because of the structure, each stage can be separately set its bias current to achieve high gain and low noise. The implemented circuit in the 0.18 um CMOS technology exhibits a high conversion gain (CG), 17.6 dB at 4 GHz and 8.1 dB at 10 GHz, a SSB noise figure (NF) of 15.6 dB, an IIP3 of -3.4 dBm to +2 dBm, and an isolation of RF-LO of -144 dB. The mixer power consumption is about 7.8 mW under a 1.8 V power supply.","PeriodicalId":344851,"journal":{"name":"2013 IEEE International Wireless Symposium (IWS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121843244","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 : 2013-04-14DOI: 10.1109/IEEE-IWS.2013.6616749
Shuqi Li, Ying Wang, Jude A. S. Jesuthasan, Ming Yu
A method of modeling spurious mode for microwave multiplexer design is presented. It is proved that the channel filter can be simplified to have the minimum structural features, yet still capable of modeling the effect of spurious mode accurately, which facilitates the application of neural networks in the multiplexer design. Model simplification and neural model development are detailed. The method enables fast and accurate simulation of the spurious mode over wide frequency range. Excellent agreements are observed between the results obtained from EM simulations and from the developed models.
{"title":"Application of neural networks to spurious mode modeling in the design of multiplexing networks","authors":"Shuqi Li, Ying Wang, Jude A. S. Jesuthasan, Ming Yu","doi":"10.1109/IEEE-IWS.2013.6616749","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2013.6616749","url":null,"abstract":"A method of modeling spurious mode for microwave multiplexer design is presented. It is proved that the channel filter can be simplified to have the minimum structural features, yet still capable of modeling the effect of spurious mode accurately, which facilitates the application of neural networks in the multiplexer design. Model simplification and neural model development are detailed. The method enables fast and accurate simulation of the spurious mode over wide frequency range. Excellent agreements are observed between the results obtained from EM simulations and from the developed models.","PeriodicalId":344851,"journal":{"name":"2013 IEEE International Wireless Symposium (IWS)","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122126119","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}
A compact K-band FDD transceiver front-end is implemented using Hybrid Integrated Circuits (HICs) technology. All devices are mounted on Rogers 4350 substrate with low cost Surface Mounted Technology (SMT). The K-band transceiver can transmit 13 dBm and receive -60 dBm to -20 dBm RF signal from 21.2 GHz to 23.6 GHz. With outside duplexer it can operate at full Frequency Division Duplex (FDD) which is very flexible in point-to-point radio communication systems. The whole module is boxed in a 230 mm×100 mm×8.5 mm metal cavity and the whole DC power consumption is only 10.2 Watt.
{"title":"A compact K-band FDD transceiver front-end","authors":"Te-lung Chen, Chaoyue Yang, Yong Liu, Xiaohong Tang","doi":"10.1109/IEEE-IWS.2013.6616767","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2013.6616767","url":null,"abstract":"A compact K-band FDD transceiver front-end is implemented using Hybrid Integrated Circuits (HICs) technology. All devices are mounted on Rogers 4350 substrate with low cost Surface Mounted Technology (SMT). The K-band transceiver can transmit 13 dBm and receive -60 dBm to -20 dBm RF signal from 21.2 GHz to 23.6 GHz. With outside duplexer it can operate at full Frequency Division Duplex (FDD) which is very flexible in point-to-point radio communication systems. The whole module is boxed in a 230 mm×100 mm×8.5 mm metal cavity and the whole DC power consumption is only 10.2 Watt.","PeriodicalId":344851,"journal":{"name":"2013 IEEE International Wireless Symposium (IWS)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116602272","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 : 2013-04-14DOI: 10.1109/IEEE-IWS.2013.6616702
K. Song, Y. Mo, Shunyong Hu, Yong Fan, Ningbo Chen
A wideband multi-way out-of-phase substrate integrated waveguide (SIW) power divider with improved rejection band by using novel hybrid multiple-via probe and multiple radial slots has been presented in this letter. The novel hybrid multiple-via probe and multiple radial slots are employed to achieve wideband and improved rejection band respectively. An eight-way out-of-phase SIW power divider is designed, fabricated, and measured. Good agreement between simulated and measured results is obtained in the desirable frequency range. The measured average insertion loss of the eight-way power divider is approximately 9.3 dB and return loss is greater than 15 dB from 3.5 GHz to 8 GHz, as well as an rejection band with more than 25 dB attenuation from 9 GHz to 11.2 GHz. A maximum amplitude imbalance of ±0.3 dB and phase imbalance of ±3° are observed over the entire operating frequency range.
{"title":"Wideband out-of-phase SIW power divider with enhanced stopband","authors":"K. Song, Y. Mo, Shunyong Hu, Yong Fan, Ningbo Chen","doi":"10.1109/IEEE-IWS.2013.6616702","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2013.6616702","url":null,"abstract":"A wideband multi-way out-of-phase substrate integrated waveguide (SIW) power divider with improved rejection band by using novel hybrid multiple-via probe and multiple radial slots has been presented in this letter. The novel hybrid multiple-via probe and multiple radial slots are employed to achieve wideband and improved rejection band respectively. An eight-way out-of-phase SIW power divider is designed, fabricated, and measured. Good agreement between simulated and measured results is obtained in the desirable frequency range. The measured average insertion loss of the eight-way power divider is approximately 9.3 dB and return loss is greater than 15 dB from 3.5 GHz to 8 GHz, as well as an rejection band with more than 25 dB attenuation from 9 GHz to 11.2 GHz. A maximum amplitude imbalance of ±0.3 dB and phase imbalance of ±3° are observed over the entire operating frequency range.","PeriodicalId":344851,"journal":{"name":"2013 IEEE International Wireless Symposium (IWS)","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128547316","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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