Pub Date : 2006-12-01DOI: 10.1109/APMC.2006.4429597
H. Nguyen, J. Gauthier, J. Fernandez, M. Sierra-Castañer, C. Caloz
A novel metallic wire substrate (MWS) is proposed for miniaturized planar microwave circuits. This MWS consists of a dense array of vertical metallic wires embedded in a regular host substrate. It is demonstrated experimentally to exhibit magneto- dielectrics properties with simultaneously enhanced effective permittivity and permeability in a broad frequency range. Consequently, a substrate of higher effective refractive index is obtained, which allows size reduction in planar components and antennas. The extracted permittivity and permeability are about 5.5 and 1.7 (compared to the host substrate with epsivr = 2.94), respectively, from DC to 10 GHz.
{"title":"Metallic wire substrate (MWS) for miniaturization in planar microwave applications","authors":"H. Nguyen, J. Gauthier, J. Fernandez, M. Sierra-Castañer, C. Caloz","doi":"10.1109/APMC.2006.4429597","DOIUrl":"https://doi.org/10.1109/APMC.2006.4429597","url":null,"abstract":"A novel metallic wire substrate (MWS) is proposed for miniaturized planar microwave circuits. This MWS consists of a dense array of vertical metallic wires embedded in a regular host substrate. It is demonstrated experimentally to exhibit magneto- dielectrics properties with simultaneously enhanced effective permittivity and permeability in a broad frequency range. Consequently, a substrate of higher effective refractive index is obtained, which allows size reduction in planar components and antennas. The extracted permittivity and permeability are about 5.5 and 1.7 (compared to the host substrate with epsivr = 2.94), respectively, from DC to 10 GHz.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132294915","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 : 2006-12-01DOI: 10.1109/APMC.2006.4429783
K. Shimatani, Y. Tsugami, I. Ganachev
Microwave plasma is widely used for plasma processing, especially plasma chemistry and chemical dry etching. Its main advantages are operation at wide pressure ranges, low plasma potentials, absence of high-energy ion flax at the substrate and chamber walls, relatively small damage at the processed surface and clean plasma environment provided by the absence of extensive wall abrasion. However, standing-wave mode jumps make continuous plasma density control problematic. The present contribution reports one effective solution to this problem: a mode-jump free internal dielectric microwave applicator.
{"title":"A new microwave-excited plasma source using an internal dielectric microwave applicator","authors":"K. Shimatani, Y. Tsugami, I. Ganachev","doi":"10.1109/APMC.2006.4429783","DOIUrl":"https://doi.org/10.1109/APMC.2006.4429783","url":null,"abstract":"Microwave plasma is widely used for plasma processing, especially plasma chemistry and chemical dry etching. Its main advantages are operation at wide pressure ranges, low plasma potentials, absence of high-energy ion flax at the substrate and chamber walls, relatively small damage at the processed surface and clean plasma environment provided by the absence of extensive wall abrasion. However, standing-wave mode jumps make continuous plasma density control problematic. The present contribution reports one effective solution to this problem: a mode-jump free internal dielectric microwave applicator.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132493804","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 : 2006-12-01DOI: 10.1109/APMC.2006.4429734
Min-Chieh Kang, J. Kuo
Based on multi-path design, a new method is proposed for design of stepped- impedance low-pass filters (LPFs) with improved attenuation levels and rejection bandwidth by creating transmission zeros. In a third-order circuit, an extra short microstrip section is introduced to shunt with the low-Z section and provides a second signal path. Two-port network analysis is formulated to predict the zeros. Design parameters include the electric length and characteristic impedance of the shunt section. Measured results show good agreement with simulation.
{"title":"Multi-path design for stepped-impedance low-pass filter to create transmission zeros and wide rejection band","authors":"Min-Chieh Kang, J. Kuo","doi":"10.1109/APMC.2006.4429734","DOIUrl":"https://doi.org/10.1109/APMC.2006.4429734","url":null,"abstract":"Based on multi-path design, a new method is proposed for design of stepped- impedance low-pass filters (LPFs) with improved attenuation levels and rejection bandwidth by creating transmission zeros. In a third-order circuit, an extra short microstrip section is introduced to shunt with the low-Z section and provides a second signal path. Two-port network analysis is formulated to predict the zeros. Design parameters include the electric length and characteristic impedance of the shunt section. Measured results show good agreement with simulation.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134248617","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 : 2006-12-01DOI: 10.1109/APMC.2006.4429433
K. Son, Sang-yeon Hwang, Chan-Gu Park, Jong-WonYu
In motion slot array antenna for receiving satellite broadcasting is presented. To reduce the loss of feed line and to reduce the coupling between the slots, we use the waveguide feeding network and the circular groove. By using two cross-type polarizers, which are implemented on a single layer film, the proposed antenna can receive RHCP or LHCP by mechanical switching system. The gains of 4x8 and 8x16 slot array antennas are 27.5dB, 31.5dB respectively. Also, in satellite broadcasting band of 11.75~12.75GHz, the axial ratio is smaller than 5dB.
{"title":"Waveguide slot array in-motion antenna for receiving both RHCP and LHCP using single layer polarizer","authors":"K. Son, Sang-yeon Hwang, Chan-Gu Park, Jong-WonYu","doi":"10.1109/APMC.2006.4429433","DOIUrl":"https://doi.org/10.1109/APMC.2006.4429433","url":null,"abstract":"In motion slot array antenna for receiving satellite broadcasting is presented. To reduce the loss of feed line and to reduce the coupling between the slots, we use the waveguide feeding network and the circular groove. By using two cross-type polarizers, which are implemented on a single layer film, the proposed antenna can receive RHCP or LHCP by mechanical switching system. The gains of 4x8 and 8x16 slot array antennas are 27.5dB, 31.5dB respectively. Also, in satellite broadcasting band of 11.75~12.75GHz, the axial ratio is smaller than 5dB.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134178941","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 : 2006-12-01DOI: 10.1109/APMC.2006.4429780
M. Forman
A low-loss LIGA-fabricated conductor- backed coplanar waveguide and filter are presented. The copper transmission lines are 517 mum thick and are fabricated directly on quartz in a uniplanar X- ray lithography process. The conductor-backed CPW achieves a measured attenuation of 0.090 dB/cm at 18 GHz with low dispersion over the bandwidth of interest. A bandpass filter is realized using the thick-metal CPW with with two shorted quarter-wave resonators, which provide a passband between 6 and 11 GHz and a loss of -1 dB at 8.5 GHz.
{"title":"Low-loss LIGA-fabricated coplanar waveguide and filter","authors":"M. Forman","doi":"10.1109/APMC.2006.4429780","DOIUrl":"https://doi.org/10.1109/APMC.2006.4429780","url":null,"abstract":"A low-loss LIGA-fabricated conductor- backed coplanar waveguide and filter are presented. The copper transmission lines are 517 mum thick and are fabricated directly on quartz in a uniplanar X- ray lithography process. The conductor-backed CPW achieves a measured attenuation of 0.090 dB/cm at 18 GHz with low dispersion over the bandwidth of interest. A bandpass filter is realized using the thick-metal CPW with with two shorted quarter-wave resonators, which provide a passband between 6 and 11 GHz and a loss of -1 dB at 8.5 GHz.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134182396","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 : 2006-12-01DOI: 10.1109/APMC.2006.4429706
Yu‐Zhen Wang, Chia-An Wang, Kun-Ying Lin
A novel miniaturized ring resonator is presented to achieve a dual-mode bandpass filter with wide rejection bandwidth. By utilizing periodical loadings inside the square ring resonator, it not only can compact size of 48%, raise the first spurious to 2.4 times of its fundamental passband, but facilitate the practical realization of dual-mode bandpass filter, simultaneously. The fractional bandwidth of 6% is achieved. The designed structure is quite simple. Moreover, both simulated and measured results demonstrate good agreement.
{"title":"Miniaturized dual-mode quasi-elliptic function bandpass filter with wide rejection bandwidth","authors":"Yu‐Zhen Wang, Chia-An Wang, Kun-Ying Lin","doi":"10.1109/APMC.2006.4429706","DOIUrl":"https://doi.org/10.1109/APMC.2006.4429706","url":null,"abstract":"A novel miniaturized ring resonator is presented to achieve a dual-mode bandpass filter with wide rejection bandwidth. By utilizing periodical loadings inside the square ring resonator, it not only can compact size of 48%, raise the first spurious to 2.4 times of its fundamental passband, but facilitate the practical realization of dual-mode bandpass filter, simultaneously. The fractional bandwidth of 6% is achieved. The designed structure is quite simple. Moreover, both simulated and measured results demonstrate good agreement.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134387466","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 : 2006-12-01DOI: 10.1109/APMC.2006.4429830
S. Taheri, F. Farzaneh
Usually the digital phase shifters are used to steer the beam of a phased array antenna, and the accuracy of beam steering and other properties of the radiation pattern is dependent on the number of bits of the phase shifter and its resolution. In this paper the results of simulations, accomplished using a number of phase feeding methods in order to reduce the phase quantization error effects are presented and three new methods are introduced and compared with the previous works.
{"title":"New methods of reducing the phase quantization error effects on beam pointing and parasitic side lobe level of the phased array antennas","authors":"S. Taheri, F. Farzaneh","doi":"10.1109/APMC.2006.4429830","DOIUrl":"https://doi.org/10.1109/APMC.2006.4429830","url":null,"abstract":"Usually the digital phase shifters are used to steer the beam of a phased array antenna, and the accuracy of beam steering and other properties of the radiation pattern is dependent on the number of bits of the phase shifter and its resolution. In this paper the results of simulations, accomplished using a number of phase feeding methods in order to reduce the phase quantization error effects are presented and three new methods are introduced and compared with the previous works.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133080474","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 : 2006-12-01DOI: 10.1109/APMC.2006.4429489
M. Noshad, H. Hedayati, A. Rostami
In this paper an interesting high-precision optical displacement sensor based on fiber optics and intensity modulation is presented. The proposed sensor has below nm precision and so excellent for high precision measurement and instrumentation systems design and implementation. The proposed method is so easy for implementation and based on diffractive optics. With variation of the barrier the reflected intensity is varied and this is a measure for distance.
{"title":"A proposal for high-precision fiber optic displacement sensor","authors":"M. Noshad, H. Hedayati, A. Rostami","doi":"10.1109/APMC.2006.4429489","DOIUrl":"https://doi.org/10.1109/APMC.2006.4429489","url":null,"abstract":"In this paper an interesting high-precision optical displacement sensor based on fiber optics and intensity modulation is presented. The proposed sensor has below nm precision and so excellent for high precision measurement and instrumentation systems design and implementation. The proposed method is so easy for implementation and based on diffractive optics. With variation of the barrier the reflected intensity is varied and this is a measure for distance.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"69 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132793323","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 novel triplexer is proposed in this paper. This triplexer is not only employ the multilayered structure to miniaturize the size of the circuit, but also involve the transmission zeros to improve its performance. The design example is also provided in this paper. Excellent agreement between measurement and simulation are obtained, which has been evidenced the feasibility of the configuration.
{"title":"The multilayered triplexer with low insertion loss","authors":"Ching‐Wen Tang, Janne-Wha Wu, Chia-Chang Hu, Sheng-Fu You, Hong-ching Lin, Shin-Shien Yeh","doi":"10.1109/APMC.2006.4429628","DOIUrl":"https://doi.org/10.1109/APMC.2006.4429628","url":null,"abstract":"A novel triplexer is proposed in this paper. This triplexer is not only employ the multilayered structure to miniaturize the size of the circuit, but also involve the transmission zeros to improve its performance. The design example is also provided in this paper. Excellent agreement between measurement and simulation are obtained, which has been evidenced the feasibility of the configuration.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131190758","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 : 2006-12-01DOI: 10.1109/APMC.2006.4429504
H. Ahn, K. Min, D. Kang, Sungchul Hong, Bumman Kim
Coupled-line filters (CLFs) with a 180deg phase shift are analyzed and coupling compensated design equations are derived. They can be applied for arbitrary termination impedances and arbitrary coupling coefficients. To verify the design equations reasonable, a microstrip CLF with a coupling coefficient of -7 dB is fabricated on a substrate (epsivr = 3.5 ,H = 30 mil, tan delta = 0.04) and tested for 100 Omega and 70 Omega termination impedances. The measured results show good agreement with the simulated ones.
{"title":"Coupling-compensated 180° phase shift coupled-Line filters terminated in arbitrary impedances","authors":"H. Ahn, K. Min, D. Kang, Sungchul Hong, Bumman Kim","doi":"10.1109/APMC.2006.4429504","DOIUrl":"https://doi.org/10.1109/APMC.2006.4429504","url":null,"abstract":"Coupled-line filters (CLFs) with a 180deg phase shift are analyzed and coupling compensated design equations are derived. They can be applied for arbitrary termination impedances and arbitrary coupling coefficients. To verify the design equations reasonable, a microstrip CLF with a coupling coefficient of -7 dB is fabricated on a substrate (epsivr = 3.5 ,H = 30 mil, tan delta = 0.04) and tested for 100 Omega and 70 Omega termination impedances. The measured results show good agreement with the simulated ones.","PeriodicalId":137931,"journal":{"name":"2006 Asia-Pacific Microwave Conference","volume":"11 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132892851","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：