Pub Date : 2004-06-06DOI: 10.1109/MWSYM.2004.1338980
Meng Cao, R. Pietig, H.C. Wu, R. G. Gossink
Perturbation theory is applied to analyze the ferrite coupled stripline (FCL) with longitudinal magnetization. Up to first order, the fields and propagation constants of the modes are obtained, neglecting the coupling to higher TE and TM modes. Based on this result, the scattering matrix of a FCL structure with a given finite length is calculated. Simple relations which connect the nonreciprocal behavior with the geometrical design parameters and the ferrite material properties are found. The perturbation results are in good agreement with simulation data and thus provide a basis for further design of nonreciprocal devices based on the FCL structure.
{"title":"Perturbation theory approach to the ferrite coupled stripline","authors":"Meng Cao, R. Pietig, H.C. Wu, R. G. Gossink","doi":"10.1109/MWSYM.2004.1338980","DOIUrl":"https://doi.org/10.1109/MWSYM.2004.1338980","url":null,"abstract":"Perturbation theory is applied to analyze the ferrite coupled stripline (FCL) with longitudinal magnetization. Up to first order, the fields and propagation constants of the modes are obtained, neglecting the coupling to higher TE and TM modes. Based on this result, the scattering matrix of a FCL structure with a given finite length is calculated. Simple relations which connect the nonreciprocal behavior with the geometrical design parameters and the ferrite material properties are found. The perturbation results are in good agreement with simulation data and thus provide a basis for further design of nonreciprocal devices based on the FCL structure.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114904359","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 : 2004-06-06DOI: 10.1109/MWSYM.2004.1338825
Se-ho You, E. Kuester
As printed circuit conductors are popularly used, the modelling of the electrical behaviour of these interconnect is getting attention. The authors present a method by which SPICE compatible lumped equivalent circuit can be extracted from two-dimensional FEM simulation of transmission line interconnects in a fast and efficient manner. The lumped parameters of the transmission line are obtained by applying a certain type of moment matching to the FEM results. It will also be pointed out that the impedance has only stable poles even though there are unstable poles in both the inductance and the resistance.
{"title":"Fast and efficient interconnect modelling using finite element method and model order reduction","authors":"Se-ho You, E. Kuester","doi":"10.1109/MWSYM.2004.1338825","DOIUrl":"https://doi.org/10.1109/MWSYM.2004.1338825","url":null,"abstract":"As printed circuit conductors are popularly used, the modelling of the electrical behaviour of these interconnect is getting attention. The authors present a method by which SPICE compatible lumped equivalent circuit can be extracted from two-dimensional FEM simulation of transmission line interconnects in a fast and efficient manner. The lumped parameters of the transmission line are obtained by applying a certain type of moment matching to the FEM results. It will also be pointed out that the impedance has only stable poles even though there are unstable poles in both the inductance and the resistance.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115590911","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 : 2004-06-06DOI: 10.1109/MWSYM.2004.1338996
Y. Horii
This paper proposes a band pass filter having plural transmission zeros by using a grounded capacitive-inductive-capacitive configuration, and studies the basic behavior of the filter both theoretically and experimentally. This filter with dimensions 12 /spl times/ 12 /spl times/ 1.588 mm/sup 3/ (0.027 /spl lambda//sub 0/ /spl times/ 0.027 /spl lambda//sub 0/ /spl times/ 0.04 /spl lambda//sub 0/) shows 4.61% passband width around 0.686 GHz in theory, and the prediction is confirmed experimentally with reasonable errors. This filter configuration is suitable for an LTCC multi-layered technology.
{"title":"A novel microstrip bandpass filter having plural transmission zeros using a capacitive-inductive-capacitive configuration","authors":"Y. Horii","doi":"10.1109/MWSYM.2004.1338996","DOIUrl":"https://doi.org/10.1109/MWSYM.2004.1338996","url":null,"abstract":"This paper proposes a band pass filter having plural transmission zeros by using a grounded capacitive-inductive-capacitive configuration, and studies the basic behavior of the filter both theoretically and experimentally. This filter with dimensions 12 /spl times/ 12 /spl times/ 1.588 mm/sup 3/ (0.027 /spl lambda//sub 0/ /spl times/ 0.027 /spl lambda//sub 0/ /spl times/ 0.04 /spl lambda//sub 0/) shows 4.61% passband width around 0.686 GHz in theory, and the prediction is confirmed experimentally with reasonable errors. This filter configuration is suitable for an LTCC multi-layered technology.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116391668","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 : 2004-06-06DOI: 10.1109/MWSYM.2004.1339197
S. Romisch, F. Ascarrunz
The application of feed forward correction principles to cancel noise in amplifiers has proven an efficient tool for enhancing noise performance of microwave amplifiers beyond the present state of the art. An improved experimental characterization of the scheme is presented with results from several amplifiers working at X-band, confirming the validity of the approach with more than 25 dB of noise cancellation for both white and flicker noise. A description of the improved measurement system used to characterize the noise cancellation is also presented, together with a discussion of the limits of the cancellation scheme.
{"title":"Improved characterization of feed-forward noise cancellation scheme for microwave amplifiers","authors":"S. Romisch, F. Ascarrunz","doi":"10.1109/MWSYM.2004.1339197","DOIUrl":"https://doi.org/10.1109/MWSYM.2004.1339197","url":null,"abstract":"The application of feed forward correction principles to cancel noise in amplifiers has proven an efficient tool for enhancing noise performance of microwave amplifiers beyond the present state of the art. An improved experimental characterization of the scheme is presented with results from several amplifiers working at X-band, confirming the validity of the approach with more than 25 dB of noise cancellation for both white and flicker noise. A description of the improved measurement system used to characterize the noise cancellation is also presented, together with a discussion of the limits of the cancellation scheme.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122338666","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 : 2004-06-06DOI: 10.1109/MWSYM.2004.1338892
A. Griol, D. Mira, J. Marti, J. Corral
A technique to suppress higher harmonics in coupled ring bandpass filters is proposed and experimentally demonstrated. This technique basically consists of mitigating the coupling mode between the excitation lines and the microstrip ring, which generates the second harmonic ring resonance. This mode suppression is achieved by optimizing the length of an open-end microstrip line connected to the excitation-coupled lines of the filter. A harmonic suppression ratio for the second harmonic greater than 25 dB in a flat bandpass filter centered at 2.5 GHz is experimentally demonstrated.
{"title":"Harmonic suppression technique based on mode coupling control in microstrip multistage coupled ring bandpass filters","authors":"A. Griol, D. Mira, J. Marti, J. Corral","doi":"10.1109/MWSYM.2004.1338892","DOIUrl":"https://doi.org/10.1109/MWSYM.2004.1338892","url":null,"abstract":"A technique to suppress higher harmonics in coupled ring bandpass filters is proposed and experimentally demonstrated. This technique basically consists of mitigating the coupling mode between the excitation lines and the microstrip ring, which generates the second harmonic ring resonance. This mode suppression is achieved by optimizing the length of an open-end microstrip line connected to the excitation-coupled lines of the filter. A harmonic suppression ratio for the second harmonic greater than 25 dB in a flat bandpass filter centered at 2.5 GHz is experimentally demonstrated.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122426178","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 : 2004-06-06DOI: 10.1109/MWSYM.2004.1339009
K. Horiguchi, M. Miki, J. Nagano, H. Senda, K. Yamauchi, M. Nakayama, T. Takagi
A look up table (LUT) type adaptive digital pre-distortion (ADPD) using a weight divided adaptive algorithm is presented. In this algorithm, an output signal of the power amplifier (PA) is used as a reference signal. Additionally, reference signal is divided by the coefficient of the LUT, so that the characteristics of the PA, such as temperature dependence, do not have influence on the convergence performances. The proposed algorithm is presented and the convergence condition is derived analytically. From the ADPD simulation, we present that the proposed algorithm is more stable than the conventional normalized least mean square (NLMS) algorithm. The developed UHF-band ADPD power amplifier achieved the intermodulation (IM) distortion of -50dBc and the PA efficiency of 18% at output power of 54.8dBm under an integrated services digital broadcasting for terrestrial television broadcasting (ISDB-T) OFDM signal.
{"title":"A UHF-band digital pre-distortion power amplifier using weight divided adaptive algorithm","authors":"K. Horiguchi, M. Miki, J. Nagano, H. Senda, K. Yamauchi, M. Nakayama, T. Takagi","doi":"10.1109/MWSYM.2004.1339009","DOIUrl":"https://doi.org/10.1109/MWSYM.2004.1339009","url":null,"abstract":"A look up table (LUT) type adaptive digital pre-distortion (ADPD) using a weight divided adaptive algorithm is presented. In this algorithm, an output signal of the power amplifier (PA) is used as a reference signal. Additionally, reference signal is divided by the coefficient of the LUT, so that the characteristics of the PA, such as temperature dependence, do not have influence on the convergence performances. The proposed algorithm is presented and the convergence condition is derived analytically. From the ADPD simulation, we present that the proposed algorithm is more stable than the conventional normalized least mean square (NLMS) algorithm. The developed UHF-band ADPD power amplifier achieved the intermodulation (IM) distortion of -50dBc and the PA efficiency of 18% at output power of 54.8dBm under an integrated services digital broadcasting for terrestrial television broadcasting (ISDB-T) OFDM signal.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122732165","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 : 2004-06-06DOI: 10.1109/MWSYM.2004.1338952
Hsin-Chia Lu, T. Chu
The multimode TRL calibration method is known as an approach for the measurement of multi-conductor transmission line devices. The propagation constants of different modes propagating along the multi-conductor transmission line must be different using this method. However, in general multi-port networks, the propagating constants at each port may be equal. We here then present the thru-line symmetry (TLS) calibration method for the calibration of the equal propagation constant case. The calibration equations with the associated calibrators for on-wafer scattering matrix measurement of four-port network are developed. The measured scattering matrix of a branch line coupler using proposed calibration method shows good agreement with simulation. This method can also be extended for the calibration of multi-port networks.
{"title":"The thru-line-symmetry (TLS) calibration method for on-wafer scattering matrix measurement of four-port networks","authors":"Hsin-Chia Lu, T. Chu","doi":"10.1109/MWSYM.2004.1338952","DOIUrl":"https://doi.org/10.1109/MWSYM.2004.1338952","url":null,"abstract":"The multimode TRL calibration method is known as an approach for the measurement of multi-conductor transmission line devices. The propagation constants of different modes propagating along the multi-conductor transmission line must be different using this method. However, in general multi-port networks, the propagating constants at each port may be equal. We here then present the thru-line symmetry (TLS) calibration method for the calibration of the equal propagation constant case. The calibration equations with the associated calibrators for on-wafer scattering matrix measurement of four-port network are developed. The measured scattering matrix of a branch line coupler using proposed calibration method shows good agreement with simulation. This method can also be extended for the calibration of multi-port networks.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"210 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122622161","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 : 2004-06-06DOI: 10.1109/MWSYM.2004.1338883
K. Taylor, D. W. van der Weide
A coaxial driven planar slot antenna resonant in the microwave regime was used to detect changes in protein conformation induced by temperature modulation. Simultaneous dielectric and UV/VIS spectroscopy measurements were obtained by attaching the slot antenna to a fused-quartz UV/VIS sample holder. Similar thermodynamic parameters (midpoint temperature and enthalpy) were obtained from both techniques over a wide concentration range and under a variety of pH condition. Here we demonstrate that a near-field antenna can be used to detect changes in conformation at very low protein concentrations, and that the protein is not destabilized by the presence of microwave power.
{"title":"Ultra-sensitive microwave detection of protein conformational changes","authors":"K. Taylor, D. W. van der Weide","doi":"10.1109/MWSYM.2004.1338883","DOIUrl":"https://doi.org/10.1109/MWSYM.2004.1338883","url":null,"abstract":"A coaxial driven planar slot antenna resonant in the microwave regime was used to detect changes in protein conformation induced by temperature modulation. Simultaneous dielectric and UV/VIS spectroscopy measurements were obtained by attaching the slot antenna to a fused-quartz UV/VIS sample holder. Similar thermodynamic parameters (midpoint temperature and enthalpy) were obtained from both techniques over a wide concentration range and under a variety of pH condition. Here we demonstrate that a near-field antenna can be used to detect changes in conformation at very low protein concentrations, and that the protein is not destabilized by the presence of microwave power.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116747541","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 : 2004-06-06DOI: 10.1109/MWSYM.2004.1335783
M. King, M.T. Yang, C. Kuo, Yun Chang, A. Chin
As scaling down the MOSFET, the f/sub t/ keeps increasing but the minimum noise figure (NF/sub min/) is difficult to scale down due to the increasing gate resistance. In this study, the NF/sub min/ can be continuously reduced to 0.13 /spl mu/m technology node (80 nm gate length) by optimizing finger number and channel width. Excellent NF/sub min/ of only 0.87 dB is measured with 4/spl mu/m finger width and multiple 72 fingers. In addition, high associated gain (22.5dB), low RF noise (1.0 dB), and low power can be simultaneously achieved in 0.13 /spl mu/m mode MOSFETs using only 6 fingers that is impossible in 0.18/spl mu/m case. We have also predicted the future scaling trend of RF noise beyond 0.13/spl mu/m mode from measured data and well calibrated Fukui's equation.
{"title":"RF noise scaling trend of MOSFETs from 0.5 /spl mu/m to 0.13 /spl mu/m technology nodes","authors":"M. King, M.T. Yang, C. Kuo, Yun Chang, A. Chin","doi":"10.1109/MWSYM.2004.1335783","DOIUrl":"https://doi.org/10.1109/MWSYM.2004.1335783","url":null,"abstract":"As scaling down the MOSFET, the f/sub t/ keeps increasing but the minimum noise figure (NF/sub min/) is difficult to scale down due to the increasing gate resistance. In this study, the NF/sub min/ can be continuously reduced to 0.13 /spl mu/m technology node (80 nm gate length) by optimizing finger number and channel width. Excellent NF/sub min/ of only 0.87 dB is measured with 4/spl mu/m finger width and multiple 72 fingers. In addition, high associated gain (22.5dB), low RF noise (1.0 dB), and low power can be simultaneously achieved in 0.13 /spl mu/m mode MOSFETs using only 6 fingers that is impossible in 0.18/spl mu/m case. We have also predicted the future scaling trend of RF noise beyond 0.13/spl mu/m mode from measured data and well calibrated Fukui's equation.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117277776","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 : 2004-06-06DOI: 10.1109/MWSYM.2004.1338987
D. Mercier, P. Charvet, P. Berruyer, C. Zanchi, L. Lapierre, O. Vendier, J. Cazaux, P. Blondy
This paper presents a wideband ohmic shunt switch implemented on a coplanar waveguide (CPW). The switch is fabricated using a dielectric membrane with patterned metallic contacts that short the CPW line when it is electrostatically actuated. The switch has been extrapolated from measurements. It exhibits low insertion loss, good matching, high isolation from DC to W band (>20 dB up to 100 GHz) and very good mechanical properties with switching time <1/spl mu/s.
{"title":"A DC to 100 GHz high performance ohmic shunt switch","authors":"D. Mercier, P. Charvet, P. Berruyer, C. Zanchi, L. Lapierre, O. Vendier, J. Cazaux, P. Blondy","doi":"10.1109/MWSYM.2004.1338987","DOIUrl":"https://doi.org/10.1109/MWSYM.2004.1338987","url":null,"abstract":"This paper presents a wideband ohmic shunt switch implemented on a coplanar waveguide (CPW). The switch is fabricated using a dielectric membrane with patterned metallic contacts that short the CPW line when it is electrostatically actuated. The switch has been extrapolated from measurements. It exhibits low insertion loss, good matching, high isolation from DC to W band (>20 dB up to 100 GHz) and very good mechanical properties with switching time <1/spl mu/s.","PeriodicalId":334675,"journal":{"name":"2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129602915","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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