Pub Date : 2008-06-15DOI: 10.1109/MWSYM.2008.4632980
T. Karacolak, E. Topsakal
The main objective of this study is to design and testing of a small size dual band implantable antenna operating in Medical Implant Communications Service (MICS) (402 MHz–405 MHz) and Industrial, Scientific and Medical (ISM) (2.4 GHz–2.48 GHz) bands. The antenna is intended for wireless medical monitoring of the physiological parameters such as glucose, pressure, temperature etc. First, the electrical properties (εr and σ) of skin samples from donor rats were measured at MSU’s College of Veterinary Medicine and then a computer model was created. The dual band antenna was then designed using an in-house Finite Element Boundary Integral solvers in conjunction with Particle Swarm Optimization (PSO) algorithm. In vitro tests are performed using skin mimicking materials. Results regarding the return loss and gain of the designed antenna were given and discussed in detail.
{"title":"Electrical properties of nude rat skin and design of implantable antennas for wireless data telemetry","authors":"T. Karacolak, E. Topsakal","doi":"10.1109/MWSYM.2008.4632980","DOIUrl":"https://doi.org/10.1109/MWSYM.2008.4632980","url":null,"abstract":"The main objective of this study is to design and testing of a small size dual band implantable antenna operating in Medical Implant Communications Service (MICS) (402 MHz–405 MHz) and Industrial, Scientific and Medical (ISM) (2.4 GHz–2.48 GHz) bands. The antenna is intended for wireless medical monitoring of the physiological parameters such as glucose, pressure, temperature etc. First, the electrical properties (εr and σ) of skin samples from donor rats were measured at MSU’s College of Veterinary Medicine and then a computer model was created. The dual band antenna was then designed using an in-house Finite Element Boundary Integral solvers in conjunction with Particle Swarm Optimization (PSO) algorithm. In vitro tests are performed using skin mimicking materials. Results regarding the return loss and gain of the designed antenna were given and discussed in detail.","PeriodicalId":273767,"journal":{"name":"2008 IEEE MTT-S International Microwave Symposium Digest","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128004773","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 : 2008-06-15DOI: 10.1109/MWSYM.2008.4633160
J. Alvarado, K. Kornegay, B. Welch, Yanxin Wang
A 91 GHz low-noise amplifier (LNA) using a unilateral gain peaking design technique is presented. Parasitic capacitances from the layout of transistors are exploited in order to frequency shift the peak of Mason’s Unilateral Gain. This methodology enhances amplifier gain performance tremendously without additional power consumption or penalty in Noise Figure. The LNA was developed in IBM’s 8HP 0.12 μm, 200 GHz fT, SiGe technology. The measured results demonstrate a peak gain of 13 dB, an IIP3 of −5.4dBm, a Noise Figure of 5.1 dB with DC power consumption of only 8.1 mW at 91 GHz. The amplifier exhibits a 3-dB Gain Bandwidth of 16 GHz from 84 – 100 GHz with a minimum Gain of 10 dB and an average NF of only 5.5 dB. This device has the highest known reported figure of merit (28.9) for a silicon based W-Band LNA.
{"title":"W-band SiGe LNA using unilateral gain peaking","authors":"J. Alvarado, K. Kornegay, B. Welch, Yanxin Wang","doi":"10.1109/MWSYM.2008.4633160","DOIUrl":"https://doi.org/10.1109/MWSYM.2008.4633160","url":null,"abstract":"A 91 GHz low-noise amplifier (LNA) using a unilateral gain peaking design technique is presented. Parasitic capacitances from the layout of transistors are exploited in order to frequency shift the peak of Mason’s Unilateral Gain. This methodology enhances amplifier gain performance tremendously without additional power consumption or penalty in Noise Figure. The LNA was developed in IBM’s 8HP 0.12 μm, 200 GHz fT, SiGe technology. The measured results demonstrate a peak gain of 13 dB, an IIP3 of −5.4dBm, a Noise Figure of 5.1 dB with DC power consumption of only 8.1 mW at 91 GHz. The amplifier exhibits a 3-dB Gain Bandwidth of 16 GHz from 84 – 100 GHz with a minimum Gain of 10 dB and an average NF of only 5.5 dB. This device has the highest known reported figure of merit (28.9) for a silicon based W-Band LNA.","PeriodicalId":273767,"journal":{"name":"2008 IEEE MTT-S International Microwave Symposium Digest","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132562638","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 : 2008-06-15DOI: 10.1109/MWSYM.2008.4632989
S. Maas, J. Pedro
This paper describes a behavioral model based on Volterra series, for use in a time-domain system simulator. Model identification is implemented by harmonic balance analysis of the modeled circuit, generating frequency-domain transfer functions, which are converted to time-domain kernels. The high efficiency model identification process minimizes computational effort, resulting in a highly practical methodology.
{"title":"Implementation of a Volterra behavioral model for system simulation","authors":"S. Maas, J. Pedro","doi":"10.1109/MWSYM.2008.4632989","DOIUrl":"https://doi.org/10.1109/MWSYM.2008.4632989","url":null,"abstract":"This paper describes a behavioral model based on Volterra series, for use in a time-domain system simulator. Model identification is implemented by harmonic balance analysis of the modeled circuit, generating frequency-domain transfer functions, which are converted to time-domain kernels. The high efficiency model identification process minimizes computational effort, resulting in a highly practical methodology.","PeriodicalId":273767,"journal":{"name":"2008 IEEE MTT-S International Microwave Symposium Digest","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132565538","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 : 2008-06-15DOI: 10.1109/MWSYM.2008.4632977
R. Islam, G. Eleftheriades
A Negative-Refractive-Index Transmission-Line (NRI-TL) inspired filter is realized by replacing the traditional shunt inductive loading with a series LC resonator to ground. Design equations for the filter are compared with full-wave simulations and experimental results are presented for a highly-selective folded implementation exhibiting 5% bandwidth at 2.03 GHz , 1 dB insertion-loss and a maximum band-edge slope of 2.15 dB/MHz.
{"title":"A compact highly-selective filter inspired by Negative-Refractive-Index Transmission Lines","authors":"R. Islam, G. Eleftheriades","doi":"10.1109/MWSYM.2008.4632977","DOIUrl":"https://doi.org/10.1109/MWSYM.2008.4632977","url":null,"abstract":"A Negative-Refractive-Index Transmission-Line (NRI-TL) inspired filter is realized by replacing the traditional shunt inductive loading with a series LC resonator to ground. Design equations for the filter are compared with full-wave simulations and experimental results are presented for a highly-selective folded implementation exhibiting 5% bandwidth at 2.03 GHz , 1 dB insertion-loss and a maximum band-edge slope of 2.15 dB/MHz.","PeriodicalId":273767,"journal":{"name":"2008 IEEE MTT-S International Microwave Symposium Digest","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133485833","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 : 2008-06-15DOI: 10.1109/MWSYM.2008.4633091
A. Yatsenko, J. Heyen, S. Sakhnenko, B. Vorotnikov, P. Heide
A very compact dual-band LTCC module supporting WiMAX IEEE 802.16e-2005 and Wi-Fi IEEE 802.11a/b/g standards is presented. The frontend module (FEM) integrates in less than 50mm2 all required passive and active functions for 1×2 (1 Transmit, 2 receive paths) MIMO operability. The FEM package has SMT compatible footprint and is 1.4mm high. Full FEM measurements results show good performance and fully validate the passive integration approach.
{"title":"Highly-integrated dual-band front-end module for WLAN and WiMAX applications based on LTCC technology","authors":"A. Yatsenko, J. Heyen, S. Sakhnenko, B. Vorotnikov, P. Heide","doi":"10.1109/MWSYM.2008.4633091","DOIUrl":"https://doi.org/10.1109/MWSYM.2008.4633091","url":null,"abstract":"A very compact dual-band LTCC module supporting WiMAX IEEE 802.16e-2005 and Wi-Fi IEEE 802.11a/b/g standards is presented. The frontend module (FEM) integrates in less than 50mm2 all required passive and active functions for 1×2 (1 Transmit, 2 receive paths) MIMO operability. The FEM package has SMT compatible footprint and is 1.4mm high. Full FEM measurements results show good performance and fully validate the passive integration approach.","PeriodicalId":273767,"journal":{"name":"2008 IEEE MTT-S International Microwave Symposium Digest","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131851725","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 : 2008-06-15DOI: 10.1109/MWSYM.2008.4633083
A. Shitvov, D. Zelenchuk, A. Schuchinsky, V. Fusco, N. Buchanan
A new approach to the direct observation of third-order passive intermodulation (PIM3) products on the microstrip transmission lines is proposed. Mapping of PIM3 product distributions along printed microstrip traces and nearby localised sources has been realised with the aid of the near field probing and a standard PIM analyser. The results of PIM3 measurements are presented and discussed in comparison with simulations based on a nonlinear transmission line model (NTL) as well as earlier experimental studies.
{"title":"Mapping of passive intermodulation products on microstrip lines","authors":"A. Shitvov, D. Zelenchuk, A. Schuchinsky, V. Fusco, N. Buchanan","doi":"10.1109/MWSYM.2008.4633083","DOIUrl":"https://doi.org/10.1109/MWSYM.2008.4633083","url":null,"abstract":"A new approach to the direct observation of third-order passive intermodulation (PIM3) products on the microstrip transmission lines is proposed. Mapping of PIM3 product distributions along printed microstrip traces and nearby localised sources has been realised with the aid of the near field probing and a standard PIM analyser. The results of PIM3 measurements are presented and discussed in comparison with simulations based on a nonlinear transmission line model (NTL) as well as earlier experimental studies.","PeriodicalId":273767,"journal":{"name":"2008 IEEE MTT-S International Microwave Symposium Digest","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134077616","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 : 2008-06-15DOI: 10.1109/MWSYM.2008.4632937
K. Frigui, D. Baillargeat, S. Verdeyme, S. Bila, A. Catherinot, J. Puech, D. Pacaud, J. Herren
A description of microwave breakdown in output multiplexer filter is presented in this paper. Such a phenomenon can affect the device and cause irreversible damage. It is so necessary to be able to predict the power level which can generate such a microwave breakdown. To study this problem, a multidisciplinary approach with a combination of three fields of science was used: electromagnetic, thermal transfer theory and plasma physics. In this paper new 1D and 3D numerical investigations of microwave breakdown in OMUX filters are presented.
{"title":"Theoretical investigation of microwave breakdown ignition in OMUX filters. A 3D numerical modeling approach","authors":"K. Frigui, D. Baillargeat, S. Verdeyme, S. Bila, A. Catherinot, J. Puech, D. Pacaud, J. Herren","doi":"10.1109/MWSYM.2008.4632937","DOIUrl":"https://doi.org/10.1109/MWSYM.2008.4632937","url":null,"abstract":"A description of microwave breakdown in output multiplexer filter is presented in this paper. Such a phenomenon can affect the device and cause irreversible damage. It is so necessary to be able to predict the power level which can generate such a microwave breakdown. To study this problem, a multidisciplinary approach with a combination of three fields of science was used: electromagnetic, thermal transfer theory and plasma physics. In this paper new 1D and 3D numerical investigations of microwave breakdown in OMUX filters are presented.","PeriodicalId":273767,"journal":{"name":"2008 IEEE MTT-S International Microwave Symposium Digest","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134091361","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 : 2008-06-15DOI: 10.1109/MWSYM.2008.4633070
O. Hammi, S. Carichner, B. Vassilakis, F. Ghannouchi
In this paper, an experimental approach is proposed to accurately identify, under a modulated signal drive, the memoryless nonlinearity of power amplifiers exhibiting memory effects. It is experimentally demonstrated that, when they are present, memory effects bias the extracted static nonlinearity. Accordingly, the sampling rate of the WCDMA test signal waveform is varied to reduce the signal’s bandwidth. It is shown that this approach minimizes the memory effects contribution to the amplifier’s nonlinear behavior and leads to accurate characterization of the ‘true’ static nonlinearity. The performance of the proposed approach is then assessed through experimental memoryless digital predistortion.
{"title":"Novel approach for static nonlinear behavior identification in RF power amplifiers exhibiting memory effects","authors":"O. Hammi, S. Carichner, B. Vassilakis, F. Ghannouchi","doi":"10.1109/MWSYM.2008.4633070","DOIUrl":"https://doi.org/10.1109/MWSYM.2008.4633070","url":null,"abstract":"In this paper, an experimental approach is proposed to accurately identify, under a modulated signal drive, the memoryless nonlinearity of power amplifiers exhibiting memory effects. It is experimentally demonstrated that, when they are present, memory effects bias the extracted static nonlinearity. Accordingly, the sampling rate of the WCDMA test signal waveform is varied to reduce the signal’s bandwidth. It is shown that this approach minimizes the memory effects contribution to the amplifier’s nonlinear behavior and leads to accurate characterization of the ‘true’ static nonlinearity. The performance of the proposed approach is then assessed through experimental memoryless digital predistortion.","PeriodicalId":273767,"journal":{"name":"2008 IEEE MTT-S International Microwave Symposium Digest","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124879984","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 : 2008-06-15DOI: 10.1109/MWSYM.2008.4633048
P. Cruz, N. Carvalho, K. Remley
This paper characterizes nonlinear distortion in an analog-to-digital converter (ADC) when excited by representative communication signals having non-constant time-domain envelopes. The effect of subjecting the ADC to signals that present a range of values of peak-to-average power ratio is studied in order to understand the impact of various nonlinear ADC mechanisms in the transmission chain.
{"title":"Evaluation of Nonlinear distortion in ADCs using multisines","authors":"P. Cruz, N. Carvalho, K. Remley","doi":"10.1109/MWSYM.2008.4633048","DOIUrl":"https://doi.org/10.1109/MWSYM.2008.4633048","url":null,"abstract":"This paper characterizes nonlinear distortion in an analog-to-digital converter (ADC) when excited by representative communication signals having non-constant time-domain envelopes. The effect of subjecting the ADC to signals that present a range of values of peak-to-average power ratio is studied in order to understand the impact of various nonlinear ADC mechanisms in the transmission chain.","PeriodicalId":273767,"journal":{"name":"2008 IEEE MTT-S International Microwave Symposium Digest","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132101871","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 : 2008-06-15DOI: 10.1109/MWSYM.2008.4633144
A. Lau, D. Jackson, J. Williams, F. Mesa, J. Bernal
The currents induced on overhead power lines and the subsequent fields from them are studied for a high frequency “broadband over power line” (BPL) source. The physical properties of the fields are studied, and the level of the fields is examined to determine the significance of the fields from BPL sources on power lines.
{"title":"Investigation of fields and currents for broadband over power line (BPL) communications","authors":"A. Lau, D. Jackson, J. Williams, F. Mesa, J. Bernal","doi":"10.1109/MWSYM.2008.4633144","DOIUrl":"https://doi.org/10.1109/MWSYM.2008.4633144","url":null,"abstract":"The currents induced on overhead power lines and the subsequent fields from them are studied for a high frequency “broadband over power line” (BPL) source. The physical properties of the fields are studied, and the level of the fields is examined to determine the significance of the fields from BPL sources on power lines.","PeriodicalId":273767,"journal":{"name":"2008 IEEE MTT-S International Microwave Symposium Digest","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134624895","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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