{"title":"A New Method to Reconfigure BAW-SMR Filters Using CMOS Transistors","authors":"M. El Hassan, E. Kerhervé, Y. Deval, D. Belot","doi":"10.1109/MWSYM.2007.379992","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.379992","url":null,"abstract":"This paper presents a new method to reconfigure the bulk acoustic wave (BAW) filters by adding inductors to the shunt resonators and by controlling these inductors with CMOS transistors that act as switches. We show an application of this new technique to a filter designed for the WLAN-802.11 b/g standard (2400-2480 MHz). In a first step, the filter design was realized for implementation in a SiP context to validate our architecture and to evaluate the potential of this new method. Applying this technique enables us to increase approximately 32% the original bandwidth and to improve the out of band rejection.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115734887","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}
{"title":"Extraction and Improvements of a Behavioral Model Based on the Wiener-Bose Structure Used for Baseband Volterra Kernels Estimation","authors":"D. Silveira, G. Magerl","doi":"10.1109/MWSYM.2007.380243","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380243","url":null,"abstract":"In this paper a strategy to extract a first-zone filtered behavioral model based on Wiener-Bose structure, which has a similar structure to the Volterra series, is introduced, and improvements applied to the model identification are highlighted. Considerations regarding the Volterra kernels symmetry for complex signals are described. A closed form for determining the number of independent parameters for a baseband Volterra series was developed and applied in the Wiener-Bose model parametrization process. A method to improve the Hessian condition number in the model calculation procedure is presented. The modeling and validation results based on measurements for an industry standard signal (WCDMA) are displayed. It is shown that this model is capable to represent efficiently RF-power amplifier (PA) memory effects with good accuracy.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124322614","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}
Nam-Gon Kim, Jeonghoon Yoon, Dongki Kim, Jeiwon Cho, C. Cheon, Y. Kwon
{"title":"A High-Temperature Capable Planar-type Coaxial Probe for Complex Permittivity Measurements Up to 40 GHz","authors":"Nam-Gon Kim, Jeonghoon Yoon, Dongki Kim, Jeiwon Cho, C. Cheon, Y. Kwon","doi":"10.1109/MWSYM.2007.380522","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380522","url":null,"abstract":"A planar-type probe applicable to a wide temperature and frequency range has been developed. The probe employs a low CTE (coefficient of thermal expansion) dielectric material to minimize the effect of thermal expansion for high temperature measurement. Additionally, the coaxial aperture dimensions have been optimized through sensitivity analysis to minimize the uncertainty of the extracted complex permittivity due to variations of the measured S-parameters. Also, the error correction method was used at extreme temperatures to compensate for the effects of the excessive thermal expansion. For validation, distilled water was measured from 0degC to 100degC in the frequency range of 0.5~40 GHz. The measured complex permittivity shows good agreement with the reference data up to 75degC without the error correction and up to the boiling point (92degC) with the error correction. To our knowledge, this is the first demonstration of low-cost planar-type probes capable of high temperature operation.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"365 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114501505","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}
{"title":"On-Chip Interconnects Modeling in Time-Domain using the Explicit DuFort-Frankel Algorithm","authors":"M. Matthaiou, K. Konstantinou, T. Yioultsis","doi":"10.1109/MWSYM.2007.380196","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380196","url":null,"abstract":"In this paper, a tractable time domain scheme is proposed for the effective modeling of microwave planar structures. Our study relies on the DuFort-Frankel algorithm (DF) which is in principle an alternative of the conventional finite-difference time-domain (FDTD) technique but yields unconditionally stable estimates and is more accurate. We focus on the integrated stripline circuits since they are less susceptible to radiation and dispersion effects compared to microstrips. A quasi-static approximation was adopted and a comprehensive field characterization is achieved by discretizing the time and space into cells and thereafter applying the Maxwell's equations and boundary conditions. Finally, the frequency dependent circuit parameters, namely the per-unit length (p.u.l) resistance and conductance, were estimated using the fundamental laws of electromagnetism.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115131595","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}
{"title":"Synthesis of Bandstop Filters With Ultra Wide Upper Passbands","authors":"N. Yildirim","doi":"10.1109/MWSYM.2007.380304","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380304","url":null,"abstract":"A new LP prototype-to-distributed bandstop mapping is defined to synthesize BSF's with controllable upper pass bandwidths. The synthesized filters involve resonators made up of commensurate OC and SC stubs coupled by inverters. It is shown that when inverters are approximated by several unit elements (UE) then their contribution to the response increases appreciably upon optimization. Thus, a novel approach is developed which can be used to synthesize BSF's with contributing UE's having ultra wide upper pass bands. Examples are presented with stopband centered at 1 GHz and having upper passband extending to 18 GHz.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"393 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114533639","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}
{"title":"Non invasive Determination of Temperature Trajectories During a Defrosting Process using Microwave Radiometry","authors":"P. Cresson, L. Dubois, J. Pribetich","doi":"10.1109/MWSYM.2007.380390","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380390","url":null,"abstract":"The control of the freezing or defrosting velocity is an important parameter in food industries, for the improvement of product quality. In this paper, radiometric measurements, a noninvasive method, are shown to be effective to follow the defrosting of foodstuff. We describe experiments and the radiometric device used. Simulations based upon the combined algorithms FDTD - heat transport equation are used to predict the radiometric temperature trajectories during the defrosting process by introducing the temperature dependent media. The comparisons between experimental and theoretical results are presented and analyzed.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"648 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115114210","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}
{"title":"Singular-Value-Decomposition Based Four Port De-embedding and Single-step Error Calibration for On-chip Measurement","authors":"Xiaoyun Wei, G. Niu, S. Sweeney, S. S. Taylor","doi":"10.1109/MWSYM.2007.380537","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380537","url":null,"abstract":"We present the 4-port based two-step on-chip parasitics de-embedding and single-step error calibration results for on-chip transistor measurements on a 0.13 mum RF CMOS process. SVD is used for solving the unknown 4-port transmission parameters and quantifying the measurement errors in the single-step approach. Despite the less accurate on-chip standards compared to standards on an impedance standard substrate, single-step error calibration gives reasonable Y-parameters for the examined transistor.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116914360","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}
{"title":"The Impact of Long Term Memory Effects in Wireless QPSK Modulated Signals","authors":"R. Santos, N. Carvalho, K. Gard","doi":"10.1109/MWSYM.2007.380178","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380178","url":null,"abstract":"This paper studies the impact of power amplifiers, PA, long term memory effects in QPSK modulated signals. To quantify the memory effects an expansion of the nonlinear distortion behavior of the PA is obtained. Both the co-channel and adjacent distortion are calculated. It is then showed that the co-channel and adjacent channel distortion are significantly affected by the long term memory effects, which implies a rise in the EVM figures. The theoretical results are further compared with CAD/CAE simulations and measurements.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116982641","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}
{"title":"LTCC Multi-layer Coupled Strip-Resonator Filters","authors":"Yunchi Zhang, K. Zaki","doi":"10.1109/MWSYM.2007.380235","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380235","url":null,"abstract":"Multi-layer coupled strip-resonators are proposed for the design of miniature filters in LTCC technology. Strong capacitive couplings between the strips at different layers are introduced in such resonators to significantly reduce the resonator size. The full-wave numerical method in Sonnet and equivalent circuit models are used to investigate the characteristics of the proposed multi-layer resonators. Two filter examples using triple-layer coupled stripline resonators and double-layer coupled hairpin resonators are presented to validate the feasibility of filter designs using multi-layer resonators.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123493193","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}
F. Schmuckle, W. Gross, K. Hirche, M. Rostewitz, W. Heinrich
{"title":"A 30-GHz Waveguide-to-Microstrip-Transition","authors":"F. Schmuckle, W. Gross, K. Hirche, M. Rostewitz, W. Heinrich","doi":"10.1109/MWSYM.2007.380338","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380338","url":null,"abstract":"Waveguide-to-microstrip transitions are essential elements for mm-wave transmitters and receivers. This paper presents an optimized transition with a relatively simple geometry and a minimum of compensation structures in order to mitigate sensitivity to fabrication tolerances. Almost 5 GHz bandwidth is achieved around 30 GHz, with an insertion loss of less than 0.25 dB. The transition can be implemented with a hermetic sealing.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123692184","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}