Pub Date : 2015-05-17DOI: 10.1109/MWSYM.2015.7166815
Chun-Ping Chen, T. Anada, S. Takeda, Zhewang Ma, S. Greedy, T. Benson
In this paper, a novel compact 2D photonic crystal bandpass resonant filter is proposed and designed on the basis of coupling matrix theory between the waveguide and point defect resonators with perturbing dielectric posts. The coupling matrix concept offers an accurate method for a direct synthesis of narrow-band filters and provides initial estimate of structure parameters for optimization design of PhC bandpass filters. By fine adjusting the structure parameters such as the radius of the coupling rod, dielectric rod, and perturbing rod, the filter characteristics are studied by using the finite difference time domain method.
{"title":"Design of pseudo-elliptic bandpass filter using higher-order modes of photonic crystal point defect cavity for sub-terahertz bands","authors":"Chun-Ping Chen, T. Anada, S. Takeda, Zhewang Ma, S. Greedy, T. Benson","doi":"10.1109/MWSYM.2015.7166815","DOIUrl":"https://doi.org/10.1109/MWSYM.2015.7166815","url":null,"abstract":"In this paper, a novel compact 2D photonic crystal bandpass resonant filter is proposed and designed on the basis of coupling matrix theory between the waveguide and point defect resonators with perturbing dielectric posts. The coupling matrix concept offers an accurate method for a direct synthesis of narrow-band filters and provides initial estimate of structure parameters for optimization design of PhC bandpass filters. By fine adjusting the structure parameters such as the radius of the coupling rod, dielectric rod, and perturbing rod, the filter characteristics are studied by using the finite difference time domain method.","PeriodicalId":6493,"journal":{"name":"2015 IEEE MTT-S International Microwave Symposium","volume":"26 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2015-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81404010","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 : 2015-05-17DOI: 10.1109/MWSYM.2015.7167137
Yu‐Sheng Su, Chia-Chan Chang, Jia-Ming Kuo, Sheng-Fuh Chang
Birds plays an essential role in ecosystem as well as human society. This paper presented the design of a short-range, low-power monitoring radar for bird observation. By utilizing the self-injection locked radar architecture and joint frequency-time analysis, the proposed system is able to detect the wing-beat frequency (WBF) from a flying bird at distances up to 18 m. Several experiments are successfully conducted on both bionic birds and real flying pigeons. The development of this radar system shows a great potential in the ornithology study.
{"title":"Design of a short-range radar system for wing-beat frequency detection","authors":"Yu‐Sheng Su, Chia-Chan Chang, Jia-Ming Kuo, Sheng-Fuh Chang","doi":"10.1109/MWSYM.2015.7167137","DOIUrl":"https://doi.org/10.1109/MWSYM.2015.7167137","url":null,"abstract":"Birds plays an essential role in ecosystem as well as human society. This paper presented the design of a short-range, low-power monitoring radar for bird observation. By utilizing the self-injection locked radar architecture and joint frequency-time analysis, the proposed system is able to detect the wing-beat frequency (WBF) from a flying bird at distances up to 18 m. Several experiments are successfully conducted on both bionic birds and real flying pigeons. The development of this radar system shows a great potential in the ornithology study.","PeriodicalId":6493,"journal":{"name":"2015 IEEE MTT-S International Microwave Symposium","volume":"156 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2015-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82422319","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 : 2015-05-17DOI: 10.1109/MWSYM.2015.7166877
Y. N. Wijayanto, A. Kanno, T. Kawanishi, H. Murata, Y. Okamura
Microstrip patch antennas feed to optical waveguides in an electro-optic (EO) modulator are proposed for millimeter-wave radar system. Reflected millimeter-wave radar signals can be received by the microstrip patch antennas and converted directly to lighwave signals through EO modulation. The lightwave signals can be distributed using low loss optical fibers. Millimeter-wave loss and distortion are almost negligible. Device analysis and experiment for 40GHz millimeter-wave bands are discussed.
{"title":"Microstrip patch antennas feed to optical waveguides in electro-optic modulator for millimeter-wave radar system","authors":"Y. N. Wijayanto, A. Kanno, T. Kawanishi, H. Murata, Y. Okamura","doi":"10.1109/MWSYM.2015.7166877","DOIUrl":"https://doi.org/10.1109/MWSYM.2015.7166877","url":null,"abstract":"Microstrip patch antennas feed to optical waveguides in an electro-optic (EO) modulator are proposed for millimeter-wave radar system. Reflected millimeter-wave radar signals can be received by the microstrip patch antennas and converted directly to lighwave signals through EO modulation. The lightwave signals can be distributed using low loss optical fibers. Millimeter-wave loss and distortion are almost negligible. Device analysis and experiment for 40GHz millimeter-wave bands are discussed.","PeriodicalId":6493,"journal":{"name":"2015 IEEE MTT-S International Microwave Symposium","volume":"5 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2015-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82954458","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 : 2015-05-17DOI: 10.1109/MWSYM.2015.7166826
R. Braithwaite
Indirect learning is often used as an estimator in digital predistortion of power amplifiers (PAs). The estimator has inherent flaws that become apparent when signal bandwidths increase. These include coefficient offsets, excessive ADC sampling requirements, and susceptibility to EVM and PA saturation. A comparison to the closed loop estimator shows that these flaws are specific to the indirect learning estimator.
{"title":"A comparison of indirect learning and closed loop estimators used in digital predistortion of power amplifiers","authors":"R. Braithwaite","doi":"10.1109/MWSYM.2015.7166826","DOIUrl":"https://doi.org/10.1109/MWSYM.2015.7166826","url":null,"abstract":"Indirect learning is often used as an estimator in digital predistortion of power amplifiers (PAs). The estimator has inherent flaws that become apparent when signal bandwidths increase. These include coefficient offsets, excessive ADC sampling requirements, and susceptibility to EVM and PA saturation. A comparison to the closed loop estimator shows that these flaws are specific to the indirect learning estimator.","PeriodicalId":6493,"journal":{"name":"2015 IEEE MTT-S International Microwave Symposium","volume":"460 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2015-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82849338","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 : 2015-05-17DOI: 10.1109/MWSYM.2015.7167060
Jonathan H. Dang, R. C. Gough, Andy M. Morishita, A. Ohta, W. Shiroma
A tunable bandpass filter based on reconfigurable liquid-metal perturbing posts in a substrate integrated waveguide (SIW) cavity is demonstrated. The design consists of four reconfigurable posts in a single cavity which provide five center frequencies from 10.13 GHz to 11.31 GHz. To enable frequency tuning, nontoxic liquid-metal Galinstan is hydraulically actuated to activate and deactivate posts. The five states have an average peak insertion loss of 1.35 dB with fractional bandwidths of 0.6% to 1% and unloaded quality factors of 96 to 154.
{"title":"A tunable x-band substrate integrated waveguide cavity filter using reconfigurable liquid-metal perturbing posts","authors":"Jonathan H. Dang, R. C. Gough, Andy M. Morishita, A. Ohta, W. Shiroma","doi":"10.1109/MWSYM.2015.7167060","DOIUrl":"https://doi.org/10.1109/MWSYM.2015.7167060","url":null,"abstract":"A tunable bandpass filter based on reconfigurable liquid-metal perturbing posts in a substrate integrated waveguide (SIW) cavity is demonstrated. The design consists of four reconfigurable posts in a single cavity which provide five center frequencies from 10.13 GHz to 11.31 GHz. To enable frequency tuning, nontoxic liquid-metal Galinstan is hydraulically actuated to activate and deactivate posts. The five states have an average peak insertion loss of 1.35 dB with fractional bandwidths of 0.6% to 1% and unloaded quality factors of 96 to 154.","PeriodicalId":6493,"journal":{"name":"2015 IEEE MTT-S International Microwave Symposium","volume":"24 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2015-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90462043","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 : 2015-05-17DOI: 10.1109/MWSYM.2015.7166934
SungWon Chung, R. Ma, S. Shinjo, K. Teo
Concurrent multi-band delta-sigma modulation (CMB-DSM) with out-of-band noise cancellation is presented for the first time. A scaled replica modulator creates anti-phased quantization noise for multi-band noise cancellation, consequently reducing adjacent channel leakage and significantly relaxing the design of a multi-band RF filter to suppress undesirable out-of-band emission. A prototype digital transmitter is designed with 6th-order CMB-DSM using a loop filter with stability compensation. Experimental results show that the proposed noise cancellation technique achieves more than 15-dB suppression on the out-of-band quantization noise with LTE inter-band carrier aggregation (CA) on 856 MHz and 1450 MHz bands with 40-MHz aggregated channel bandwidth.
{"title":"Inter-band carrier aggregation digital transmitter architecture with concurrent multi-band delta-sigma modulation using out-of-band noise cancellation","authors":"SungWon Chung, R. Ma, S. Shinjo, K. Teo","doi":"10.1109/MWSYM.2015.7166934","DOIUrl":"https://doi.org/10.1109/MWSYM.2015.7166934","url":null,"abstract":"Concurrent multi-band delta-sigma modulation (CMB-DSM) with out-of-band noise cancellation is presented for the first time. A scaled replica modulator creates anti-phased quantization noise for multi-band noise cancellation, consequently reducing adjacent channel leakage and significantly relaxing the design of a multi-band RF filter to suppress undesirable out-of-band emission. A prototype digital transmitter is designed with 6th-order CMB-DSM using a loop filter with stability compensation. Experimental results show that the proposed noise cancellation technique achieves more than 15-dB suppression on the out-of-band quantization noise with LTE inter-band carrier aggregation (CA) on 856 MHz and 1450 MHz bands with 40-MHz aggregated channel bandwidth.","PeriodicalId":6493,"journal":{"name":"2015 IEEE MTT-S International Microwave Symposium","volume":"5 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2015-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89302467","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 : 2015-05-17DOI: 10.1109/MWSYM.2015.7166764
A. Serhan, E. Lauga-Larroze, J. Fournier
This paper describes a V-Band power detector fabricated in a BiCMOS 55nm (ft/fmax = 320GHz/370GHz) process. The detector is to be used in millimeter-wave circuits for automatic level control, built-in test and in-situ power measurement. The detector occupies an area of 0.0064mm2 and exhibits an equivalent input resistance/capacitance of 1kΩ /13fF around 60GHz. Measurements show a detection dynamic range of 30dB over the 50GHz to 66GHz bandwidth. The minimum detectable input power is -22dBm thanks to the use of common base bipolar SiGe transistor at the input stage. The measured output bandwidth is 700MHz. In nominal bias conditions, the detector power consumption is 90μW for -22dBm input power and it increases to 800μW for 8.5dBm input power. These performances are beyond the current state-of-the-art.
{"title":"A 700MHz output bandwidth, 30dB dynamic range, common-base mm-wave power detector","authors":"A. Serhan, E. Lauga-Larroze, J. Fournier","doi":"10.1109/MWSYM.2015.7166764","DOIUrl":"https://doi.org/10.1109/MWSYM.2015.7166764","url":null,"abstract":"This paper describes a V-Band power detector fabricated in a BiCMOS 55nm (ft/fmax = 320GHz/370GHz) process. The detector is to be used in millimeter-wave circuits for automatic level control, built-in test and in-situ power measurement. The detector occupies an area of 0.0064mm2 and exhibits an equivalent input resistance/capacitance of 1kΩ /13fF around 60GHz. Measurements show a detection dynamic range of 30dB over the 50GHz to 66GHz bandwidth. The minimum detectable input power is -22dBm thanks to the use of common base bipolar SiGe transistor at the input stage. The measured output bandwidth is 700MHz. In nominal bias conditions, the detector power consumption is 90μW for -22dBm input power and it increases to 800μW for 8.5dBm input power. These performances are beyond the current state-of-the-art.","PeriodicalId":6493,"journal":{"name":"2015 IEEE MTT-S International Microwave Symposium","volume":"1 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2015-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89375109","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 : 2015-05-17DOI: 10.1109/MWSYM.2015.7167133
W. Allen, D. Peroulis
For the first time, an analytical formula is presented for calculating the OIP3 of any arbitrary circuit with a single shunt varactor diode. Additionally, numerical calculation of the limits on varactor tuning range when a specific OIP3 is desired is discussed, and a commercial varactor is found to maintain 44% of its tuning range with a OIP3 > 37 dBm.
{"title":"Tuning limits of shunt varactor diodes for maintaining high OIP3 in arbitrary circuits","authors":"W. Allen, D. Peroulis","doi":"10.1109/MWSYM.2015.7167133","DOIUrl":"https://doi.org/10.1109/MWSYM.2015.7167133","url":null,"abstract":"For the first time, an analytical formula is presented for calculating the OIP3 of any arbitrary circuit with a single shunt varactor diode. Additionally, numerical calculation of the limits on varactor tuning range when a specific OIP3 is desired is discussed, and a commercial varactor is found to maintain 44% of its tuning range with a OIP3 > 37 dBm.","PeriodicalId":6493,"journal":{"name":"2015 IEEE MTT-S International Microwave Symposium","volume":"61 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2015-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89498357","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 : 2015-05-17DOI: 10.1109/MWSYM.2015.7166878
J. Kimionis, A. Georgiadis, Michael Isakov, H. Qi, M. Tentzeris
A system design is presented for radio frequency (RF) energy harvesting on wireless sensor network (WSN) nodes, where all electronics reside inside a 3D structure and the antennas lie on the surfaces of it. Additive manufacturing techniques are used for the packaging and antenna fabrication: A 3D-printed cross-shaped structure is built that folds to a cuboid in an “origami” fashion and retains its shape at room temperature. Inkjet printing is used to directly fabricate antennas on the surfaces of the 3D-printed plastic, enabling a fully additive manufacturing of the structure. Multiple antennas on the cube's surfaces can be used for RF energy harvesting of signals arriving from totally orthogonal directions, with the use of an appropriate harvester. The system modules (cube, antenna, harvester) are described and characterized, offering a proof-of-concept for the combination of fabrication techniques to build systems for demanding RF applications.
{"title":"3D/inkjet-printed origami antennas for multi-direction RF harvesting","authors":"J. Kimionis, A. Georgiadis, Michael Isakov, H. Qi, M. Tentzeris","doi":"10.1109/MWSYM.2015.7166878","DOIUrl":"https://doi.org/10.1109/MWSYM.2015.7166878","url":null,"abstract":"A system design is presented for radio frequency (RF) energy harvesting on wireless sensor network (WSN) nodes, where all electronics reside inside a 3D structure and the antennas lie on the surfaces of it. Additive manufacturing techniques are used for the packaging and antenna fabrication: A 3D-printed cross-shaped structure is built that folds to a cuboid in an “origami” fashion and retains its shape at room temperature. Inkjet printing is used to directly fabricate antennas on the surfaces of the 3D-printed plastic, enabling a fully additive manufacturing of the structure. Multiple antennas on the cube's surfaces can be used for RF energy harvesting of signals arriving from totally orthogonal directions, with the use of an appropriate harvester. The system modules (cube, antenna, harvester) are described and characterized, offering a proof-of-concept for the combination of fabrication techniques to build systems for demanding RF applications.","PeriodicalId":6493,"journal":{"name":"2015 IEEE MTT-S International Microwave Symposium","volume":"64 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2015-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89868671","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 : 2015-05-17DOI: 10.1109/MWSYM.2015.7167143
M. Giese, Tim Meinhardt, A. Jacob
Two W-band inline transitions between microstrip line and rectangular waveguide are presented. They cover the single-ended and equivalent differential microstrip line case and result from a common design procedure. This is based on antipodal finlines and Vivaldi-like antennas on an ultrathin liquid crystal polymer substrate inserted in a WR10-waveguide. The designs are presented and the performance of the transitions is evaluated in simulation and measurements. The back-to-back measurement results show good agreement with simulation and exhibit less than 0.9 dB insertion loss and more than 12 dB return loss for the differential transition over the whole W-band.
{"title":"Compact wideband single-ended and differential microstrip-to-waveguide transitions at W-band","authors":"M. Giese, Tim Meinhardt, A. Jacob","doi":"10.1109/MWSYM.2015.7167143","DOIUrl":"https://doi.org/10.1109/MWSYM.2015.7167143","url":null,"abstract":"Two W-band inline transitions between microstrip line and rectangular waveguide are presented. They cover the single-ended and equivalent differential microstrip line case and result from a common design procedure. This is based on antipodal finlines and Vivaldi-like antennas on an ultrathin liquid crystal polymer substrate inserted in a WR10-waveguide. The designs are presented and the performance of the transitions is evaluated in simulation and measurements. The back-to-back measurement results show good agreement with simulation and exhibit less than 0.9 dB insertion loss and more than 12 dB return loss for the differential transition over the whole W-band.","PeriodicalId":6493,"journal":{"name":"2015 IEEE MTT-S International Microwave Symposium","volume":"6 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2015-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89982731","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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