Pub Date : 2015-12-01DOI: 10.1109/APMC.2015.7413370
Z. Jiang, D. Werner
In this paper, we report the design, fabrication, and experimental measurement of a compact co-designed circularly polarized (CP) filtering antenna with a wide operational bandwidth. In the filtering antenna module, the radiator serves simultaneously as the last resonator of the filter which was realized by coupled stripline open-loop resonators. A proof-of-concept design is presented with both its S11 <; -14 dB and axial ratio <; 3 dB bandwidths covering 12.5%, ranging from 3.75 to 4.25 GHz. A prototype was fabricated and characterized, showing strong agreement between simulated and measured results. The gain response exhibits a profile similar to the transmission of a bandpass filter. The integrated filtering and radiating modules with a compact form factor and improved performance metric are expected to find potential applications in a variety of wireless communication systems.
{"title":"A co-designed wideband circularly polarized integrated filtering antenna","authors":"Z. Jiang, D. Werner","doi":"10.1109/APMC.2015.7413370","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413370","url":null,"abstract":"In this paper, we report the design, fabrication, and experimental measurement of a compact co-designed circularly polarized (CP) filtering antenna with a wide operational bandwidth. In the filtering antenna module, the radiator serves simultaneously as the last resonator of the filter which was realized by coupled stripline open-loop resonators. A proof-of-concept design is presented with both its S11 <; -14 dB and axial ratio <; 3 dB bandwidths covering 12.5%, ranging from 3.75 to 4.25 GHz. A prototype was fabricated and characterized, showing strong agreement between simulated and measured results. The gain response exhibits a profile similar to the transmission of a bandpass filter. The integrated filtering and radiating modules with a compact form factor and improved performance metric are expected to find potential applications in a variety of wireless communication systems.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128534761","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 : 2015-12-01DOI: 10.1109/APMC.2015.7413539
Zhaosheng He, Z. Shao, C. You, Y. Huang, Xiang Li
In this paper, a compact bandpass filter using quarter-mode substrate integrated waveguide (QMSIW) cavities with mixed coupling is presented. The mixed coupling is realized by etching a coplanar waveguide(CPW) at the magnetic coupled neighborhood section of two cascaded QMSIW resonators, which introduces two transmission zeros at the lower and higher rejection band. The filter enjoys merits of good selectivity, miniaturized size and wide stop band. In order to verify the design concept, a bandpass filter with center frequency of 8.625GHz is fabricated and measured. The measured results show good agreement with the simulated results.
{"title":"Design of compact bandpass filter based on quarter-mode substrate integrated waveguide with mixed coupling","authors":"Zhaosheng He, Z. Shao, C. You, Y. Huang, Xiang Li","doi":"10.1109/APMC.2015.7413539","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413539","url":null,"abstract":"In this paper, a compact bandpass filter using quarter-mode substrate integrated waveguide (QMSIW) cavities with mixed coupling is presented. The mixed coupling is realized by etching a coplanar waveguide(CPW) at the magnetic coupled neighborhood section of two cascaded QMSIW resonators, which introduces two transmission zeros at the lower and higher rejection band. The filter enjoys merits of good selectivity, miniaturized size and wide stop band. In order to verify the design concept, a bandpass filter with center frequency of 8.625GHz is fabricated and measured. The measured results show good agreement with the simulated results.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128626303","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 : 2015-12-01DOI: 10.1109/APMC.2015.7412935
Zheng Tang, Hong-li Peng, Yu Zhong, J. Mao
A novel antenna array for stroke enhanced detection is presented in this paper. The array consists of two new designed UWB antennas and two half-wave E-dipole, placed symmetrically around a 3D head model with equally distances to the origin. The head model is Cole-Cole parameter based and made by six dispersive spherical layers, representing different tissues of the head. An approach to determine the locations of E-dipole are also given. Our achieved simulation shows that the array is validated in 0.75-1.2 GHz with enhanced detecting sensitivity from several testing cases involving different stroke sizes and locations. It makes the array is potential for brain stroke detection.
{"title":"A novel antenna array for stroke enhanced detection","authors":"Zheng Tang, Hong-li Peng, Yu Zhong, J. Mao","doi":"10.1109/APMC.2015.7412935","DOIUrl":"https://doi.org/10.1109/APMC.2015.7412935","url":null,"abstract":"A novel antenna array for stroke enhanced detection is presented in this paper. The array consists of two new designed UWB antennas and two half-wave E-dipole, placed symmetrically around a 3D head model with equally distances to the origin. The head model is Cole-Cole parameter based and made by six dispersive spherical layers, representing different tissues of the head. An approach to determine the locations of E-dipole are also given. Our achieved simulation shows that the array is validated in 0.75-1.2 GHz with enhanced detecting sensitivity from several testing cases involving different stroke sizes and locations. It makes the array is potential for brain stroke detection.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129536884","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 : 2015-12-01DOI: 10.1109/APMC.2015.7413519
G. Cheng, Z. Fan, D. Ding, R. Chen
This paper concentrates on an efficient fast algorithm for accelerating the marching-on-in-time (MOT) - based time domain integral equation (TDIE) method for the analysis of the transient electromagnetic scattering from perfect electrically conducting (PEC). Taking advantage of the approximate evaluation of the vector and scalar potential terms and the Taylor series expansion of far field, the computational complexity and memory requirement of the proposed algorithm can be reduced considerably. Numerical example is presented to demonstrate the accuracy and efficiency of the proposed algorithm.
{"title":"An efficient fast algorithm for accelerating the marching-on-in-time based time domain integral equation method","authors":"G. Cheng, Z. Fan, D. Ding, R. Chen","doi":"10.1109/APMC.2015.7413519","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413519","url":null,"abstract":"This paper concentrates on an efficient fast algorithm for accelerating the marching-on-in-time (MOT) - based time domain integral equation (TDIE) method for the analysis of the transient electromagnetic scattering from perfect electrically conducting (PEC). Taking advantage of the approximate evaluation of the vector and scalar potential terms and the Taylor series expansion of far field, the computational complexity and memory requirement of the proposed algorithm can be reduced considerably. Numerical example is presented to demonstrate the accuracy and efficiency of the proposed algorithm.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127289154","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}
We launched a terahertz high-speed communication research based on terahertz monolithic integrated circuit chip (TMIC). The TMIC employs GaAs Schottky diodes to realize direct up and down-conversion between broadband IF and terahertz band. A 340 GHz subharmonic balanced modulator using waveguide structure was designed, simulation shows that the transition loss in LO port is less than 0.4 dB, RF port is less than 0.3 dB, and the conversion loss is less than 14 dB. For different forms of digital modulation methods, we carried out the terahertz communication system link budget and comparative analysis based on the TMIC modulator. Paper shows the effect of different system parameters and modulation type to the communication rate, which could achieve the transmission rate more than 30 Gbps.
{"title":"A terahertz high-speed communication research based on TMIC at 340 GHz","authors":"Dalu Guo, Weiwen Yuan, X. Sun, Haidong Qiao, X. Lv","doi":"10.1109/APMC.2015.7413567","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413567","url":null,"abstract":"We launched a terahertz high-speed communication research based on terahertz monolithic integrated circuit chip (TMIC). The TMIC employs GaAs Schottky diodes to realize direct up and down-conversion between broadband IF and terahertz band. A 340 GHz subharmonic balanced modulator using waveguide structure was designed, simulation shows that the transition loss in LO port is less than 0.4 dB, RF port is less than 0.3 dB, and the conversion loss is less than 14 dB. For different forms of digital modulation methods, we carried out the terahertz communication system link budget and comparative analysis based on the TMIC modulator. Paper shows the effect of different system parameters and modulation type to the communication rate, which could achieve the transmission rate more than 30 Gbps.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127162621","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 : 2015-12-01DOI: 10.1109/APMC.2015.7413023
Jia-Jun Lu, Xue-xia Yang, Chong Tan
A dual-frequency rectifier with adaptive power is proposed for the rectenna of a microwave power transmission system. It operates at 900MHz and 2.4GHz (GSM and ISM bands) on a wide and low input power condition. A FET works as an adaptive switch for changing the working modes of the rectifier according to the level of the input power. A cross-shaped match stub matches the two impedances of the diode to 50fl. A shunted capacitor works as a dc-pass filter to smooth the output DC power. The simulated maximum conversion efficiencies at two operation frequencies are 63.5% and 56.9%, respectively. The input power range in which the efficiency exceeds 40% is from -16dBm to 4dBm at 900MHz and is from -13dBm to 5dBm at 2.4GHz.
{"title":"A dual-frequency rectifier with adaptive power","authors":"Jia-Jun Lu, Xue-xia Yang, Chong Tan","doi":"10.1109/APMC.2015.7413023","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413023","url":null,"abstract":"A dual-frequency rectifier with adaptive power is proposed for the rectenna of a microwave power transmission system. It operates at 900MHz and 2.4GHz (GSM and ISM bands) on a wide and low input power condition. A FET works as an adaptive switch for changing the working modes of the rectifier according to the level of the input power. A cross-shaped match stub matches the two impedances of the diode to 50fl. A shunted capacitor works as a dc-pass filter to smooth the output DC power. The simulated maximum conversion efficiencies at two operation frequencies are 63.5% and 56.9%, respectively. The input power range in which the efficiency exceeds 40% is from -16dBm to 4dBm at 900MHz and is from -13dBm to 5dBm at 2.4GHz.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127361557","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 : 2015-12-01DOI: 10.1109/APMC.2015.7413461
J. Wang, Y. J. Cheng
With the development of the integrated phased array, antennas and feeding networks are expected to be integrated together. In this case, the multilayer stacked technique has the advantages of reducing the circuit size and easy to fabricate by Print Circuit Board (PCB) process. In this paper, a complex microstrip feeding network, including a divider, a combiner and a monitoring structure, is employed to excite a 4×4 array, which has the potential to construct a tile phased array combined with T/R integrated circuits. A novel multilayer weak unequal divider is developed to realize the T/R module detection while keeping a compact configuration. Finally, an X-band multilayer passive network integrated with antennas is designed and full-wave simulated by HFSS. The measured results are in good agreement with the simulated ones.
{"title":"Multilayer passive network integrated with antennas for phased array applications","authors":"J. Wang, Y. J. Cheng","doi":"10.1109/APMC.2015.7413461","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413461","url":null,"abstract":"With the development of the integrated phased array, antennas and feeding networks are expected to be integrated together. In this case, the multilayer stacked technique has the advantages of reducing the circuit size and easy to fabricate by Print Circuit Board (PCB) process. In this paper, a complex microstrip feeding network, including a divider, a combiner and a monitoring structure, is employed to excite a 4×4 array, which has the potential to construct a tile phased array combined with T/R integrated circuits. A novel multilayer weak unequal divider is developed to realize the T/R module detection while keeping a compact configuration. Finally, an X-band multilayer passive network integrated with antennas is designed and full-wave simulated by HFSS. The measured results are in good agreement with the simulated ones.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130099944","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 : 2015-12-01DOI: 10.1109/APMC.2015.7411767
Yan-Yan Liu, Zhihong Tu, Q. Chu
A novel design of a dual-band microstrip slot antenna with high common-mode(CM) suppression for wireless local area network(WLAN) multiple-input-multiple-output (MIMO) systems is proposed in this paper. The proposed MIMO antenna element consists of a T-shape slot and a inverted U-shape microstrip feed line. The T-shape shot includes both open-ended and short-ended slots. Open-ended and short-ended slots are exploited to obtain two resonant modes, whose center frequencies can be adjusted by the slot lengths. The T-shape slot on the top layer is fed by a pair of differential microstrip lines by proximity coupling. Simulated results show that the -10 dB impedance bandwidth of the MIMO antenna covers the 2.4/5.2/5.8 bands for WLAN applications. The measured isolation is better than 15dB for differential-mode(DM) signs in all bands. Besides, the radiation performance is also measured.
{"title":"Differentially T-shape slot antenna with high common-mode suppression for 2.4/5.2/5.8 GHz WLAN MIMO systems","authors":"Yan-Yan Liu, Zhihong Tu, Q. Chu","doi":"10.1109/APMC.2015.7411767","DOIUrl":"https://doi.org/10.1109/APMC.2015.7411767","url":null,"abstract":"A novel design of a dual-band microstrip slot antenna with high common-mode(CM) suppression for wireless local area network(WLAN) multiple-input-multiple-output (MIMO) systems is proposed in this paper. The proposed MIMO antenna element consists of a T-shape slot and a inverted U-shape microstrip feed line. The T-shape shot includes both open-ended and short-ended slots. Open-ended and short-ended slots are exploited to obtain two resonant modes, whose center frequencies can be adjusted by the slot lengths. The T-shape slot on the top layer is fed by a pair of differential microstrip lines by proximity coupling. Simulated results show that the -10 dB impedance bandwidth of the MIMO antenna covers the 2.4/5.2/5.8 bands for WLAN applications. The measured isolation is better than 15dB for differential-mode(DM) signs in all bands. Besides, the radiation performance is also measured.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129029759","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 : 2015-12-01DOI: 10.1109/APMC.2015.7413002
Jie Yang, Wai‐Wa Choi, K. Tam
In this paper, a novel dual band frequency tunable slot antenna using varactors is presented. By varying the bias voltage of the varactors, the length of the slot is tuned equivalently, thus both the lower resonant frequency and the higher resonant frequency can be tuned simultaneously with a constant frequency of f2/f1. The first resonant frequency can be tuned from 1.36 GHz to 1.52 GHz while the second resonant frequency can be tuned from 2.12 GHz to 2.63 GHz, as shown by measured results. The achievable frequency ratio approximately remains unchanged within range of 1.56 to 1.73 over the whole tunable range. Compared with the higher band tuning range, the lower band frequency can be considered as constant over the whole bias tuning range. The radiation pattern directions approximately remain the same over the whole voltage tuning range for both band.
{"title":"A novel dual-band frequency tunable slot antenna with constant frequency ratio","authors":"Jie Yang, Wai‐Wa Choi, K. Tam","doi":"10.1109/APMC.2015.7413002","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413002","url":null,"abstract":"In this paper, a novel dual band frequency tunable slot antenna using varactors is presented. By varying the bias voltage of the varactors, the length of the slot is tuned equivalently, thus both the lower resonant frequency and the higher resonant frequency can be tuned simultaneously with a constant frequency of f2/f1. The first resonant frequency can be tuned from 1.36 GHz to 1.52 GHz while the second resonant frequency can be tuned from 2.12 GHz to 2.63 GHz, as shown by measured results. The achievable frequency ratio approximately remains unchanged within range of 1.56 to 1.73 over the whole tunable range. Compared with the higher band tuning range, the lower band frequency can be considered as constant over the whole bias tuning range. The radiation pattern directions approximately remain the same over the whole voltage tuning range for both band.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130586560","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 : 2015-12-01DOI: 10.1109/APMC.2015.7413477
H. Tang, Ling-bao Kong, Pu‐Kun Liu
Modes in cylindrical waveguides with periodic subwavelength metal grating loaded on the inner surface are analyzed by both theory and simulation. Coupling between spoof surface plasmon mode and traditional waveguide mode provides a robust way to build TM02 single mode operation. Furthermore, a new approach to realize the well-integrated and reciprocal mode conversion between TM01 mode and TM02 mode is proposed.
{"title":"Mode analysis in cylindrical waveguide loaded with spoof surface plasmon","authors":"H. Tang, Ling-bao Kong, Pu‐Kun Liu","doi":"10.1109/APMC.2015.7413477","DOIUrl":"https://doi.org/10.1109/APMC.2015.7413477","url":null,"abstract":"Modes in cylindrical waveguides with periodic subwavelength metal grating loaded on the inner surface are analyzed by both theory and simulation. Coupling between spoof surface plasmon mode and traditional waveguide mode provides a robust way to build TM02 single mode operation. Furthermore, a new approach to realize the well-integrated and reciprocal mode conversion between TM01 mode and TM02 mode is proposed.","PeriodicalId":269888,"journal":{"name":"2015 Asia-Pacific Microwave Conference (APMC)","volume":"22 1-2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132496716","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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