Pub Date : 2008-04-21DOI: 10.1109/GSMM.2008.4534662
Rui-na Zhang, X. Lai, Sheng-Li Lai
The size of traditional microstrip antenna is too large for some handset applications, and the bandwidth of typical planar inverted-F antenna (PIFA) is not wide enough. In this paper a PIFA structure with slot ground has been developed, which provides wider bandwidth and higher gain but with minimized size. The proposed antenna structure provides seven times bandwidth and 1.1 dB higher gain compared with typical PIFA, and the size of radiate patch has been reduced at the same time. This structure is very suitable for radio frequency handset applications.
{"title":"A PIFA with Slot Ground for RF Handset Applications","authors":"Rui-na Zhang, X. Lai, Sheng-Li Lai","doi":"10.1109/GSMM.2008.4534662","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534662","url":null,"abstract":"The size of traditional microstrip antenna is too large for some handset applications, and the bandwidth of typical planar inverted-F antenna (PIFA) is not wide enough. In this paper a PIFA structure with slot ground has been developed, which provides wider bandwidth and higher gain but with minimized size. The proposed antenna structure provides seven times bandwidth and 1.1 dB higher gain compared with typical PIFA, and the size of radiate patch has been reduced at the same time. This structure is very suitable for radio frequency handset applications.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"PP 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126448419","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 : 2008-04-21DOI: 10.1109/GSMM.2008.4534657
Zeng peng, Li Chaowei, Wang Qiang
Introduces the characters, the principle and the design considerations of the 36 GHz conformal rectangular patch antenna on a cone. And a linear array is designed. With the application of Ansoft HFSS based on the finite element method, the patch and the linear array is simulated.
{"title":"The Design and Simulation of Millimeter Wave Conformal Microstrip Antenna Patch on Conical Surface","authors":"Zeng peng, Li Chaowei, Wang Qiang","doi":"10.1109/GSMM.2008.4534657","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534657","url":null,"abstract":"Introduces the characters, the principle and the design considerations of the 36 GHz conformal rectangular patch antenna on a cone. And a linear array is designed. With the application of Ansoft HFSS based on the finite element method, the patch and the linear array is simulated.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121759998","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 : 2008-04-21DOI: 10.1109/GSMM.2008.4534575
Le Huu Truong, Yong-Hyun Baek, S. Choi, Mun-Kyo Lee, D. Ko, Sang Jin Lee, D. Chien, Y. Chae, J. Rhee
In this paper, a design of compact W-band planar Quasi-Yagi antenna is presented. The proposed antenna is fed by 50 Ohm coplanar waveguide with a broad-band balun in order to convert from unbalanced grounded-coplanar waveguide (G-CPW) mode into balanced coplanar strip line (CPS) mode. This antenna is realized on a high dielectric constant substrate, GaAs-relative dielectric permittivity of 12.9, that's compatible with active devices and circuits. Using the truncated ground plane as a reflector, the proposed antenna has a broad relative bandwidth of 18.07% with its return loss better than -10 dB, front to back ratio is 15.6 dB and 6.08 dBi of gain at 94 GHz. This antenna can be widely applied in wireless communication systems, active phased array antenna or millimeter-wave imaging systems.
{"title":"A Compact W-Band Planar Quasi-Yagi Antenna on GaAs Substrate for Active Phased Array Antenna","authors":"Le Huu Truong, Yong-Hyun Baek, S. Choi, Mun-Kyo Lee, D. Ko, Sang Jin Lee, D. Chien, Y. Chae, J. Rhee","doi":"10.1109/GSMM.2008.4534575","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534575","url":null,"abstract":"In this paper, a design of compact W-band planar Quasi-Yagi antenna is presented. The proposed antenna is fed by 50 Ohm coplanar waveguide with a broad-band balun in order to convert from unbalanced grounded-coplanar waveguide (G-CPW) mode into balanced coplanar strip line (CPS) mode. This antenna is realized on a high dielectric constant substrate, GaAs-relative dielectric permittivity of 12.9, that's compatible with active devices and circuits. Using the truncated ground plane as a reflector, the proposed antenna has a broad relative bandwidth of 18.07% with its return loss better than -10 dB, front to back ratio is 15.6 dB and 6.08 dBi of gain at 94 GHz. This antenna can be widely applied in wireless communication systems, active phased array antenna or millimeter-wave imaging systems.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131256755","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 : 2008-04-21DOI: 10.1109/GSMM.2008.4534556
Jeha Kim, K. Choi, Yong‐Duck Chung, J. Sim, Dong‐Soo Shin, Hyun-Kyu Yu
Using ultra-high-speed electro-absorption modulator (EAM) we developed analog optical transmitters. In a system-on-package (SOP) EAM module the module was co-packaged with a low noise amplifier (LNA) and RF matching circuit. The analog performance of modules was investigated in 60 GHz two-tone test for intermodulation measurements.
{"title":"System-On-Packaging Transmitter for 60-GHz Electric-to-Optical Signal Conversion","authors":"Jeha Kim, K. Choi, Yong‐Duck Chung, J. Sim, Dong‐Soo Shin, Hyun-Kyu Yu","doi":"10.1109/GSMM.2008.4534556","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534556","url":null,"abstract":"Using ultra-high-speed electro-absorption modulator (EAM) we developed analog optical transmitters. In a system-on-package (SOP) EAM module the module was co-packaged with a low noise amplifier (LNA) and RF matching circuit. The analog performance of modules was investigated in 60 GHz two-tone test for intermodulation measurements.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"251 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133527203","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 : 2008-04-21DOI: 10.1109/GSMM.2008.4534580
D. Goshi, T. Itoh
For many millimeter-wave phased array applications, system complexity and high implementation cost remains as its key limiting factors. These issues arise because of the intricacy of feeding networks and large amounts of RF circuitry that is required. This paper presents a method of sparse array optimization for millimeter-wave applications through the use of a genetic algorithm. By applying directive radiating elements for high resolution applications, the initial number of elements can be greatly reduced, helping to simplify the architecture in terms of feeding networks. This method demonstrates a 98.5% reduction in the total number of radiating elements while maintaining a peak sidelobe level below -15 dB, offering a drastic cost reduction on the overall system.
{"title":"Sparse Array Optimization with Directive Elements for Millimeter-wave Application","authors":"D. Goshi, T. Itoh","doi":"10.1109/GSMM.2008.4534580","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534580","url":null,"abstract":"For many millimeter-wave phased array applications, system complexity and high implementation cost remains as its key limiting factors. These issues arise because of the intricacy of feeding networks and large amounts of RF circuitry that is required. This paper presents a method of sparse array optimization for millimeter-wave applications through the use of a genetic algorithm. By applying directive radiating elements for high resolution applications, the initial number of elements can be greatly reduced, helping to simplify the architecture in terms of feeding networks. This method demonstrates a 98.5% reduction in the total number of radiating elements while maintaining a peak sidelobe level below -15 dB, offering a drastic cost reduction on the overall system.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124337601","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 : 2008-04-21DOI: 10.1109/GSMM.2008.4534620
Wu Yanmin, Gao Bo, Chen Yan, Tian Yu, Tong Ling
Spectral-domain approach is adopted in this paper to analyze the dispersion characteristics of microstrip lines with finite conductor strip thickness based on an approximate model. In the model, the thick conductor strip is replaced by two parallel strips without thickness considering the skin-effect of high-frequency currents. The dyadic Green's functions needed in the analysis are obtained by spectral-domain immittance approach. Some numerical results are presented and show good validity.
{"title":"Analysis of Microstrip Lines with Finite Conductor Strip Thickness by Spectral-Domain Approach","authors":"Wu Yanmin, Gao Bo, Chen Yan, Tian Yu, Tong Ling","doi":"10.1109/GSMM.2008.4534620","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534620","url":null,"abstract":"Spectral-domain approach is adopted in this paper to analyze the dispersion characteristics of microstrip lines with finite conductor strip thickness based on an approximate model. In the model, the thick conductor strip is replaced by two parallel strips without thickness considering the skin-effect of high-frequency currents. The dyadic Green's functions needed in the analysis are obtained by spectral-domain immittance approach. Some numerical results are presented and show good validity.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114988742","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 : 2008-04-21DOI: 10.1109/GSMM.2008.4534577
Lixiao Zhang, J. Stiens, H. Sahli
The emerging active millimeter wave imaging technology has the potential to yield much more information when one has control over the illumination parameters such as angle and frequency. In this paper, we propose using image fusion techniques to process multispectral millimeter wave images in order to improve the image quality. Three pixel level fusion methods, based on band ratioing, wavelet transform, and principle component analysis, have been applied to multispectral images of two test objects, captured by an experimental active millimeter wave imaging setup. The results show that multispectral image fusion successfully improves the spatial content of the object of interest.
{"title":"Multispectral Image Fusion for Active Millimeter Wave Imaging Application","authors":"Lixiao Zhang, J. Stiens, H. Sahli","doi":"10.1109/GSMM.2008.4534577","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534577","url":null,"abstract":"The emerging active millimeter wave imaging technology has the potential to yield much more information when one has control over the illumination parameters such as angle and frequency. In this paper, we propose using image fusion techniques to process multispectral millimeter wave images in order to improve the image quality. Three pixel level fusion methods, based on band ratioing, wavelet transform, and principle component analysis, have been applied to multispectral images of two test objects, captured by an experimental active millimeter wave imaging setup. The results show that multispectral image fusion successfully improves the spatial content of the object of interest.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129311052","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 : 2008-04-21DOI: 10.1109/GSMM.2008.4534632
Wang Huali, Yao Hong-chao
Bused on analyzing the basic characteristics of mobile satellite channel at Ka-band, the specific impact of rain attenuation, as well as fading and shadowing are taken into account and a comprehensive simulation model is proposed. A hardware-in-the-loop (HIL) simulator of rain fade channel is design and implemented based on field programmable gate array (FPGA), which can provide rain attenuation prediction under different rainfall conditions whose statistics (e.g. distribution of attenuation, distribution of fade durations) are almost identical to those of measured data by using time series generator. Meanwhile, the bit-error rate (BER) performance of mobile satellite channel at Ka-band in different weather condition is evaluated with simulation results, which proves that the simulator is reasonable and valid.
{"title":"Comprehensive Simulation and Hardware Implementation of Mobile Satellite Channel at Ka-band","authors":"Wang Huali, Yao Hong-chao","doi":"10.1109/GSMM.2008.4534632","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534632","url":null,"abstract":"Bused on analyzing the basic characteristics of mobile satellite channel at Ka-band, the specific impact of rain attenuation, as well as fading and shadowing are taken into account and a comprehensive simulation model is proposed. A hardware-in-the-loop (HIL) simulator of rain fade channel is design and implemented based on field programmable gate array (FPGA), which can provide rain attenuation prediction under different rainfall conditions whose statistics (e.g. distribution of attenuation, distribution of fade durations) are almost identical to those of measured data by using time series generator. Meanwhile, the bit-error rate (BER) performance of mobile satellite channel at Ka-band in different weather condition is evaluated with simulation results, which proves that the simulator is reasonable and valid.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129189874","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 : 2008-04-21DOI: 10.1109/GSMM.2008.4534547
V. Dyadyuk, L. Stokes, M. Shen
70-90 GHz integrated receive and transmit modules with sub-harmonic frequency translation were developed using a GaAs MMIC chip set. These have a reported -3 dB bandwidth above 9 GHz and 6 GHz respectively for the down-converter and up-converter. With a common 39.25 GHz LO frequency, the modules are well suited for the RF transceivers of full-duplex wireless communication systems operating in both 71-76 and 81- 86 GHz bands using the lower or upper side-band conversion in each chosen (receive or transmit) direction.
{"title":"Integrated W-band GaAs MMIC Modules for Multi-Gigabit Wireless Communication Systems","authors":"V. Dyadyuk, L. Stokes, M. Shen","doi":"10.1109/GSMM.2008.4534547","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534547","url":null,"abstract":"70-90 GHz integrated receive and transmit modules with sub-harmonic frequency translation were developed using a GaAs MMIC chip set. These have a reported -3 dB bandwidth above 9 GHz and 6 GHz respectively for the down-converter and up-converter. With a common 39.25 GHz LO frequency, the modules are well suited for the RF transceivers of full-duplex wireless communication systems operating in both 71-76 and 81- 86 GHz bands using the lower or upper side-band conversion in each chosen (receive or transmit) direction.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129255425","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 : 2008-04-21DOI: 10.1109/GSMM.2008.4534579
A. Raisanen, J. Ala-Laurinaho, D. Chicherin, S. Dudorov, A. Karttunen, D. Lioubtchenko, O. Luukkonen, J. Mallat, P. Pousi, A. Tamminen, M. Vaaja
Overview of recent research activities of MilliLab and SMARAD at mm- and submm-wavelengths is presented. These activities include MEMS-tunable high-impedance surfaces, passive and active dielectric rod waveguide components, indirect holographic imaging, and measurement techniques for high-gain antennas.
{"title":"Mm- and submm-wave research activities at MilliLab and SMARAD","authors":"A. Raisanen, J. Ala-Laurinaho, D. Chicherin, S. Dudorov, A. Karttunen, D. Lioubtchenko, O. Luukkonen, J. Mallat, P. Pousi, A. Tamminen, M. Vaaja","doi":"10.1109/GSMM.2008.4534579","DOIUrl":"https://doi.org/10.1109/GSMM.2008.4534579","url":null,"abstract":"Overview of recent research activities of MilliLab and SMARAD at mm- and submm-wavelengths is presented. These activities include MEMS-tunable high-impedance surfaces, passive and active dielectric rod waveguide components, indirect holographic imaging, and measurement techniques for high-gain antennas.","PeriodicalId":304483,"journal":{"name":"2008 Global Symposium on Millimeter Waves","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123413114","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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