Pub Date : 2005-06-17DOI: 10.1109/MWSYM.2005.1516575
Yumin Lu, L. Katehi, D. Peroulis
This paper introduces a novel design technique for developing microwave MEMS impedance tuners. Unlike existing designs we simultaneously optimize both the impedance coverage and power handling of the tuner. This allows the tuner to be used in real-life load-pull systems where power handling is equally important to impedance tuning. We further increase the power handling by utilizing contact-less MEMS varactors that can reliably handle more than 3.5 W of power. These principles are demonstrated with a 30 GHz tuner that exhibits very wide impedance tuning and an improvement of 4.5 times (compared to conventional MEMS designs) in terms of the power it can deliver.
{"title":"A Novel MEMS Impedance Tuner Simultaneously Optimized for Maximum Impedance Range and Power Handling","authors":"Yumin Lu, L. Katehi, D. Peroulis","doi":"10.1109/MWSYM.2005.1516575","DOIUrl":"https://doi.org/10.1109/MWSYM.2005.1516575","url":null,"abstract":"This paper introduces a novel design technique for developing microwave MEMS impedance tuners. Unlike existing designs we simultaneously optimize both the impedance coverage and power handling of the tuner. This allows the tuner to be used in real-life load-pull systems where power handling is equally important to impedance tuning. We further increase the power handling by utilizing contact-less MEMS varactors that can reliably handle more than 3.5 W of power. These principles are demonstrated with a 30 GHz tuner that exhibits very wide impedance tuning and an improvement of 4.5 times (compared to conventional MEMS designs) in terms of the power it can deliver.","PeriodicalId":13133,"journal":{"name":"IEEE MTT-S International Microwave Symposium Digest, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90965179","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 : 2005-06-17DOI: 10.1109/MTT67880.2005.9387853
T. Vähä‐Heikkilä, J. Varis, J. Tuovinen, G. Rebeiz
Reconfigurable integrated impedance tuners have been developed for W-Band on-wafer noise parameter and loadpull measurement applications. The impedance tuners are based on double and triple-stub topologies and employ 11 switched MEMS capacitors producing 2048 (211) different impedances. Measured ${leftvertGamma_{MAX} rightvert}$ for the double-stub tuner is 0.92 and 0.82 at 75 and 100 GHz from 110 measurements out of 2048 possible impedances, and 0.92 and 0.83 for the triple-stub tuner. To our knowledge, this represents the first W-band integrated impedance tuner to date.
{"title":"W-Band RF MEMS Double and Triple-Stub Impedance Tuners","authors":"T. Vähä‐Heikkilä, J. Varis, J. Tuovinen, G. Rebeiz","doi":"10.1109/MTT67880.2005.9387853","DOIUrl":"https://doi.org/10.1109/MTT67880.2005.9387853","url":null,"abstract":"Reconfigurable integrated impedance tuners have been developed for W-Band on-wafer noise parameter and loadpull measurement applications. The impedance tuners are based on double and triple-stub topologies and employ 11 switched MEMS capacitors producing 2048 (211) different impedances. Measured ${leftvertGamma_{MAX} rightvert}$ for the double-stub tuner is 0.92 and 0.82 at 75 and 100 GHz from 110 measurements out of 2048 possible impedances, and 0.92 and 0.83 for the triple-stub tuner. To our knowledge, this represents the first W-band integrated impedance tuner to date.","PeriodicalId":13133,"journal":{"name":"IEEE MTT-S International Microwave Symposium Digest, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82739445","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 : 2005-06-17DOI: 10.1109/MTT67880.2005.9387797
E. Rezek, D. Novak
This session is devoted to new technologies and capabilities that will enable the realization of radio-over-fiber communications. In particular, papers describe new devices and techniques to improve system performance.
{"title":"Session TU1A: Radio Over Fiber: Devices, Techniques and Systems","authors":"E. Rezek, D. Novak","doi":"10.1109/MTT67880.2005.9387797","DOIUrl":"https://doi.org/10.1109/MTT67880.2005.9387797","url":null,"abstract":"This session is devoted to new technologies and capabilities that will enable the realization of radio-over-fiber communications. In particular, papers describe new devices and techniques to improve system performance.","PeriodicalId":13133,"journal":{"name":"IEEE MTT-S International Microwave Symposium Digest, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78797301","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 : 2005-06-17DOI: 10.1109/MTT67880.2005.9387823
M. Tentzeris, W. Hoefer
This session deals with new applications of time domain methods as well as technical problems associated with combined electromagnetic, solid-state and acoustic simulations. The first group of papers shows results for SAW filters (combined EM and acoustic simulations) computed in time-domain, the development and modelling of 3D metamaterials with negative refractive index and simulation results for slow-wave structures. The last papers deal with the modeling of gyromagnetic materials and the fast simulation of pin-diode switches.
{"title":"Session TU4C: New applications of time domain methods","authors":"M. Tentzeris, W. Hoefer","doi":"10.1109/MTT67880.2005.9387823","DOIUrl":"https://doi.org/10.1109/MTT67880.2005.9387823","url":null,"abstract":"This session deals with new applications of time domain methods as well as technical problems associated with combined electromagnetic, solid-state and acoustic simulations. The first group of papers shows results for SAW filters (combined EM and acoustic simulations) computed in time-domain, the development and modelling of 3D metamaterials with negative refractive index and simulation results for slow-wave structures. The last papers deal with the modeling of gyromagnetic materials and the fast simulation of pin-diode switches.","PeriodicalId":13133,"journal":{"name":"IEEE MTT-S International Microwave Symposium Digest, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72649476","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 : 2005-06-17DOI: 10.1109/MTT67880.2005.9387843
B. Spielman, T. Kemerley
This focused session will deal with emerging technologies and applications involving a large number of distributed, extremely small sensors that independently collect information, possibly interpret that information, and communicate a response to the other sensors as an ad hoc network and/or a central location to effect a collective objective. These technologies have potential for impacting: defense applications, medical applications, agricultural management, structure and earthquake monitoring, industrial controls, machinery condition monitoring, transportation and shipping, power grid monitoring and management, fire fighting and rescue operations, home automation, and interactive toys. The presenters will be asked to, when possible, address issues relating to chip and sensor integration and packaging, software/middleware (including self-organizing and self-repairing networking protocols and security issues), and operating systems. The session will focus on applications involving MOTES, MEMS, and RF sensors.
{"title":"Session TU4E: Focused Session: Distributed RF Sensor/Communication Systems","authors":"B. Spielman, T. Kemerley","doi":"10.1109/MTT67880.2005.9387843","DOIUrl":"https://doi.org/10.1109/MTT67880.2005.9387843","url":null,"abstract":"This focused session will deal with emerging technologies and applications involving a large number of distributed, extremely small sensors that independently collect information, possibly interpret that information, and communicate a response to the other sensors as an ad hoc network and/or a central location to effect a collective objective. These technologies have potential for impacting: defense applications, medical applications, agricultural management, structure and earthquake monitoring, industrial controls, machinery condition monitoring, transportation and shipping, power grid monitoring and management, fire fighting and rescue operations, home automation, and interactive toys. The presenters will be asked to, when possible, address issues relating to chip and sensor integration and packaging, software/middleware (including self-organizing and self-repairing networking protocols and security issues), and operating systems. The session will focus on applications involving MOTES, MEMS, and RF sensors.","PeriodicalId":13133,"journal":{"name":"IEEE MTT-S International Microwave Symposium Digest, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84769158","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 : 2005-06-17DOI: 10.1109/MTT67880.2005.9387795
Ming Yu, S. Kanamaluru
The session presents new ideals and latest progresses in microwave filter theory and synthesis techniques.
会议介绍了微波滤波器理论和合成技术的新理念和最新进展。
{"title":"Session TU1E: Filter Theory and Synthesis Techniques","authors":"Ming Yu, S. Kanamaluru","doi":"10.1109/MTT67880.2005.9387795","DOIUrl":"https://doi.org/10.1109/MTT67880.2005.9387795","url":null,"abstract":"The session presents new ideals and latest progresses in microwave filter theory and synthesis techniques.","PeriodicalId":13133,"journal":{"name":"IEEE MTT-S International Microwave Symposium Digest, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87674857","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 : 2005-06-17DOI: 10.1109/MWSYM.2005.1516896
J. Ruiz‐Cruz, Yunchi Zhang, K. Zaki, A. Piloto, J. Rebollar
A new branch-line directional coupler is proposed for achieving wide bandwidth. The device is implemented in ridge waveguide to exploit its wide monomode band. It can be physically realized either in empty ridge waveguide or in LTCC for integration in a chip module. Two prototypes of two and five branches are designed following a systematic procedure. An appropriate equivalent circuit provides initial dimensions and the desired optimum response is obtained by means of a final full-wave optimization based on the rigorous and efficient mode-matching method. The results are verified with the finite element method of the HFSS software and a prototype will be manufactured for testing
{"title":"Ridge waveguide branch-line directional couplers for wideband applications and LTCC technology","authors":"J. Ruiz‐Cruz, Yunchi Zhang, K. Zaki, A. Piloto, J. Rebollar","doi":"10.1109/MWSYM.2005.1516896","DOIUrl":"https://doi.org/10.1109/MWSYM.2005.1516896","url":null,"abstract":"A new branch-line directional coupler is proposed for achieving wide bandwidth. The device is implemented in ridge waveguide to exploit its wide monomode band. It can be physically realized either in empty ridge waveguide or in LTCC for integration in a chip module. Two prototypes of two and five branches are designed following a systematic procedure. An appropriate equivalent circuit provides initial dimensions and the desired optimum response is obtained by means of a final full-wave optimization based on the rigorous and efficient mode-matching method. The results are verified with the finite element method of the HFSS software and a prototype will be manufactured for testing","PeriodicalId":13133,"journal":{"name":"IEEE MTT-S International Microwave Symposium Digest, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84787229","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 : 2005-06-17DOI: 10.1109/MTT67880.2005.9387811
L. Reynolds, F. Schindler
This session includes state-of-the-art developments in RF and microwave mixers, multipliers, and switches.
本次会议包括射频和微波混频器、乘法器和开关的最新发展。
{"title":"Session TU1B: Frequency Conversion and Control Circuits","authors":"L. Reynolds, F. Schindler","doi":"10.1109/MTT67880.2005.9387811","DOIUrl":"https://doi.org/10.1109/MTT67880.2005.9387811","url":null,"abstract":"This session includes state-of-the-art developments in RF and microwave mixers, multipliers, and switches.","PeriodicalId":13133,"journal":{"name":"IEEE MTT-S International Microwave Symposium Digest, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83643689","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 : 2005-06-17DOI: 10.1109/MWSYM.2005.1516856
A. Deleniv
A multiport admittance/impedance matrix for the truncated 2D periodic structure is derived via expansion of node voltages and currents in terms of Floquet's waves. It is shown that for uniaxial propagation, the structure comprised of a finite number of columns/rows is identical to multicoupled lines with properly defined parameters. The 3times3 unit cell array fed at different sides is analyzed using the developed formulation. The results are then verified with a rigorous Sonnet simulation, thereby confirming the validity of the presented approach
{"title":"Analysis of truncated 2d periodic structures","authors":"A. Deleniv","doi":"10.1109/MWSYM.2005.1516856","DOIUrl":"https://doi.org/10.1109/MWSYM.2005.1516856","url":null,"abstract":"A multiport admittance/impedance matrix for the truncated 2D periodic structure is derived via expansion of node voltages and currents in terms of Floquet's waves. It is shown that for uniaxial propagation, the structure comprised of a finite number of columns/rows is identical to multicoupled lines with properly defined parameters. The 3times3 unit cell array fed at different sides is analyzed using the developed formulation. The results are then verified with a rigorous Sonnet simulation, thereby confirming the validity of the presented approach","PeriodicalId":13133,"journal":{"name":"IEEE MTT-S International Microwave Symposium Digest, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79573519","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 : 2005-06-17DOI: 10.1109/MWSYM.2005.1616963
S. Hensley, K. Wheeler, G. Sadowy, T. Miller, S. Shaffer, R. Muellerschoen, Cathleen E. Jones, H. Zebker, S. Madsen, P. Rosen
NASA's Jet Propulsion Laboratory is currently implementing a reconfigurable polarimetric L-band synthetic aperture radar (SAR), specifically designed to acquire airborne repeat track interferometric (RTI) SAR data, also known as differential interferometric measurements. Differential interferometry can provide key deformation measurements, important for the scientific studies of Earthquakes and volcanoes. Using precision real-time GPS and a sensor controlled flight management system, the system will be able to fly predefined paths with great precision. The expected performance of the flight control system will constrain the flight path to be within a 10 m diameter tube about the desired flight track. The radar will be designed to operate on a UAV (Unpiloted Arial Vehicle) but will initially be demonstrated on a minimally piloted vehicle (MPV), such as the Proteus built by Scaled Composites or on a NASA Gulfstream III. The radar design is a fully polarimetric with an 80 MHz bandwidth (2 m range resolution) and 16 km range swath. The antenna is an electronically steered along track to assure that the actual antenna pointing can be controlled independent of the wind direction and speed. Other features supported by the antenna include an elevation monopulse option and a pulse-to-pulse resteering capability that will enable some novel modes of operation. The system will nominally operate at 45,000 ft (13800 m). The program began out as an Instrument Incubator Project (IIP) funded by NASA Earth Science and Technology Office (ESTO).
{"title":"Status of a UAVSAR Designed for Repeat Pass Interferometry for Deformation Measurements","authors":"S. Hensley, K. Wheeler, G. Sadowy, T. Miller, S. Shaffer, R. Muellerschoen, Cathleen E. Jones, H. Zebker, S. Madsen, P. Rosen","doi":"10.1109/MWSYM.2005.1616963","DOIUrl":"https://doi.org/10.1109/MWSYM.2005.1616963","url":null,"abstract":"NASA's Jet Propulsion Laboratory is currently implementing a reconfigurable polarimetric L-band synthetic aperture radar (SAR), specifically designed to acquire airborne repeat track interferometric (RTI) SAR data, also known as differential interferometric measurements. Differential interferometry can provide key deformation measurements, important for the scientific studies of Earthquakes and volcanoes. Using precision real-time GPS and a sensor controlled flight management system, the system will be able to fly predefined paths with great precision. The expected performance of the flight control system will constrain the flight path to be within a 10 m diameter tube about the desired flight track. The radar will be designed to operate on a UAV (Unpiloted Arial Vehicle) but will initially be demonstrated on a minimally piloted vehicle (MPV), such as the Proteus built by Scaled Composites or on a NASA Gulfstream III. The radar design is a fully polarimetric with an 80 MHz bandwidth (2 m range resolution) and 16 km range swath. The antenna is an electronically steered along track to assure that the actual antenna pointing can be controlled independent of the wind direction and speed. Other features supported by the antenna include an elevation monopulse option and a pulse-to-pulse resteering capability that will enable some novel modes of operation. The system will nominally operate at 45,000 ft (13800 m). The program began out as an Instrument Incubator Project (IIP) funded by NASA Earth Science and Technology Office (ESTO).","PeriodicalId":13133,"journal":{"name":"IEEE MTT-S International Microwave Symposium Digest, 2005.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75437586","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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