R. Stefanini, M. Chatras, A. Pothier, J. Orlianges, P. Blondy
{"title":"High Q tunable cavity using dielectric less RF-MEMS varactors","authors":"R. Stefanini, M. Chatras, A. Pothier, J. Orlianges, P. Blondy","doi":"10.23919/eumc.2009.5296111","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296111","url":null,"abstract":"This paper presents first experimental results on high Q MEMS tunable microwave cavity using RF-MEMS switched varactors. MEMS varactors that have been used in this work are based on a dielectric less tunable cantilever actuator, with good reliability and well-established fabrication process. It is shown that one can obtain large Q using type of component, with measured Qu between 550 and 850 for a tuning range of 500 MHz around 5 GHz.","PeriodicalId":148226,"journal":{"name":"2009 European Microwave Integrated Circuits Conference (EuMIC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122355545","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}
G. Papaioannou, N. Tavasolian, C. Goldsmith, J. Papapolymerou
{"title":"Dielectric charging and thermally activated processes in MEMS capacitive switches","authors":"G. Papaioannou, N. Tavasolian, C. Goldsmith, J. Papapolymerou","doi":"10.23919/eumc.2009.5296573","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296573","url":null,"abstract":"The paper investigates dielectric charging effects for capacitive RF MEMS switches with SiO2 as the dielectric material. Two different actuation schemes are implemented in order to incorporate and better understand the charging history over time. Experimental results indicate that regardless of the actuation scheme the charging is thermally in principle, and that the activation energy decreases as the voltage sweep rate increases.","PeriodicalId":148226,"journal":{"name":"2009 European Microwave Integrated Circuits Conference (EuMIC)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126283376","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":"Tunable microwave amplifier using a compact MEMS impedance matching network","authors":"F. Domingue, A. Kouki, R. Mansour","doi":"10.23919/eumc.2009.5296314","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296314","url":null,"abstract":"This paper presents the design of a reconfigurable RF amplifier based on compact tunable MEMS impedance matching network for low frequency applications. The amplifier uses a pHEMT transistor fabricated in GaAs technology while the MEMS circuits were fabricated using a dedicated RF MEMS process. The reconfigurable network is based on a slow-wave distributed MEMS transmission line (SW-DMTL) presenting a wide impedance coverage at low frequencies. The performance of the amplifier is controlled for frequencies from 3.5 to 9 GHz while the gain is kept around the maximum available stable gain. Moreover, the amplifier operates under various source impedance conditions.","PeriodicalId":148226,"journal":{"name":"2009 European Microwave Integrated Circuits Conference (EuMIC)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117184456","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}
C. Palego, Jie Deng, S. Halder, Zhen Peng, J. Hwang, D. Forehand, C. Goldsmith
{"title":"Pulse RF operation of MEMS capacitive switches","authors":"C. Palego, Jie Deng, S. Halder, Zhen Peng, J. Hwang, D. Forehand, C. Goldsmith","doi":"10.23919/eumc.2009.5295946","DOIUrl":"https://doi.org/10.23919/eumc.2009.5295946","url":null,"abstract":"Shifts in the pull-in voltage of electrostatically actuated MEMS capacitive switches were characterized under pulse RF excitation, which allowed the electrical and thermal effects of the RF excitation to be separated. The resulted multiphysics model accurately predicted the pull-in voltage shift under different pulse powers and duty cycles. By comparing the power capacity of switches made of aluminum or molybdenum, a new figure of merit is proposed for selecting the optimum material for the fabrication of high-power MEMS capacitive switches.","PeriodicalId":148226,"journal":{"name":"2009 European Microwave Integrated Circuits Conference (EuMIC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125589142","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}
V. Di Giacomo, N. Thouvenin, C. Gaquière, A. Santarelli, F. Filicori
{"title":"Modelling and design of a wideband 6–18 GHz GaN Resistive Mixer","authors":"V. Di Giacomo, N. Thouvenin, C. Gaquière, A. Santarelli, F. Filicori","doi":"10.1109/EUMC.2009.5295933","DOIUrl":"https://doi.org/10.1109/EUMC.2009.5295933","url":null,"abstract":"A wideband hybrid AlGaN/GaN Resistive Mixer has been designed and simulated. The cold-FET mixer is based on a 2*100*0.25 µm2 AlGaN/GaN HEMT in a single-ended circuit topology. An application-specific empirical transistor model has been extracted and validated in small- and large-signal conditions, in order to carry out the mixer design and simulations. This mixer presents an IF bandwidth of 6 GHz with a conversion loss ≪ 16 dB for each RF and LO frequency choice from 6 up to 18 GHz.","PeriodicalId":148226,"journal":{"name":"2009 European Microwave Integrated Circuits Conference (EuMIC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114724228","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}
R. Malmqvist, C. Samuelsson, P. Rantakari, P. Frijlink, D. Smith, W. Simon, J. Saijets, T. Vaha-Heikkila, R. Baggen
{"title":"RF MEMS-MMIC building blocks for emerging wireless systems and RF-sensing applications","authors":"R. Malmqvist, C. Samuelsson, P. Rantakari, P. Frijlink, D. Smith, W. Simon, J. Saijets, T. Vaha-Heikkila, R. Baggen","doi":"10.23919/eumc.2009.5296438","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296438","url":null,"abstract":"In this paper we present the main scope and initial results obtained within a pan-European research activity aiming at a successful monolithic integration of innovative RF MEMS switches into a standard GaAs MMIC process technology. Measured results of a fabricated ohmic contact type of RF MEMS switch developed by the OMMIC foundry show promising results e.g. in terms of low RF losses (0.2–0.4 dB is obtained from DC up to 30 GHz). The experimentally verified GaAs based RF MEMS switch has further been used to design low-loss MMIC building blocks such as switching, matching and phase shifting circuits for various RF applications up to 40 GHz.","PeriodicalId":148226,"journal":{"name":"2009 European Microwave Integrated Circuits Conference (EuMIC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129242815","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. Bettidi, F. Corsaro, A. Cetronio, A. Nanni, M. Peroni, P. Romanini
{"title":"X-Band GaN-HEMT LNA performance versus robustness trade-off","authors":"A. Bettidi, F. Corsaro, A. Cetronio, A. Nanni, M. Peroni, P. Romanini","doi":"10.23919/eumc.2009.5296145","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296145","url":null,"abstract":"In this paper design, fabrication and test of three X-Band robust LNA MMICs in microstrip GaN technology are presented to better understand the key aspects of performance versus robustness trade-off for said components. In particular LNAs with different number of amplification stages, input device gate peripheries and topologies have been evaluated with the objective of achieving in the 8–11 GHz frequency range a NF better than 2.5dB, associated gain of circa 20 dB and overdrive power survivability better than 38 dBm.","PeriodicalId":148226,"journal":{"name":"2009 European Microwave Integrated Circuits Conference (EuMIC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117308202","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}
R. Giordani, M. Amici, A. Barigelli, Franco Conti, M. Del Marro, M. Feudale, M. Imparato, A. Suriani
{"title":"Highly integrated and solderless LTCC based C-Band T/R Module","authors":"R. Giordani, M. Amici, A. Barigelli, Franco Conti, M. Del Marro, M. Feudale, M. Imparato, A. Suriani","doi":"10.23919/eumc.2009.5296520","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296520","url":null,"abstract":"This paper describes a C-Band T/R Module (TRM) developed by Thales Alenia Space Italia as element of the Electronic Front-End (EFE) for Synthetic Aperture Radar (SAR) antenna developed for Sentinel-1 Program under the responsibility of the European Commission and the European Space Agency in the frame of the Global Monitoring for Environment and Security (GMES).","PeriodicalId":148226,"journal":{"name":"2009 European Microwave Integrated Circuits Conference (EuMIC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115831361","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. Raffo, S. Di Falco, V. Vadalà, F. Scappaviva, G. Vannini
{"title":"Class-A power amplifier design technique based on electron device low-frequency characterization","authors":"A. Raffo, S. Di Falco, V. Vadalà, F. Scappaviva, G. Vannini","doi":"10.23919/eumc.2009.5296393","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296393","url":null,"abstract":"In this paper, a new approach to class-A power amplifier design is proposed. Such a technique, which is mostly based on low-frequency characterisation, allows to reach the same design goals obtained through expensive nonlinear setups operating at microwave frequencies. In order to demonstrate the effectiveness of the proposed design technique, a practical example of class-A power amplifier design, based on GaN technology, is deeply investigated.","PeriodicalId":148226,"journal":{"name":"2009 European Microwave Integrated Circuits Conference (EuMIC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133052129","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":"PWM bandwidth and wireless system peak-to-minimum power ratio","authors":"P. Cruz, N. Carvalho","doi":"10.23919/eumc.2009.5295955","DOIUrl":"https://doi.org/10.23919/eumc.2009.5295955","url":null,"abstract":"This paper presents a relationship between peak-to-minimum power ratio, PMPR, and pulse-width-modulation, PWM, bandwidth, i.e., the digital PWM sampling frequency.","PeriodicalId":148226,"journal":{"name":"2009 European Microwave Integrated Circuits Conference (EuMIC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131560288","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}