A mutual coupling suppression method is proposed for microstrip antenna array by cutting four small semi-circle annular apertures on the metal plate. The structure of antenna array is composed of 2 × 2 four eleme...A mutual coupling suppression method is proposed for microstrip antenna array by cutting four small semi-circle annular apertures on the metal plate. The structure of antenna array is composed of 2 × 2 four elements. The antenna consists of double layer dielectric, and it realizes circular polarization characteristics by cutting rectangular slot on circular patch in the direction of 45°, by using aperture coupling feeding and reverse feeding principle. There is 90* phase difference between adjacent antenna elements. Thus, it cuts off the coupling current field between the elements, suppresses the surface wave and reduces the mutual coupling by cutting four semi-circle annular apertures symmetrically on the metal plate. The simulation results show that after cutting four semi-circle annular apertures, the antenna array coupling coefficients decrease significantly, and the side and back lobe levels are suppressed effectively with the gain of antenna improved. So the proposed method is effective to suppress microstrip antenna array mutual coupling.展开更多
A 16 × 16 micro-strip antenna array with high gain characteristic was proposed for the 5.5 GHz W/MAX application. The T-junctions with a power ratio of 2 : 1 were used to design the feed network. To correct the ...A 16 × 16 micro-strip antenna array with high gain characteristic was proposed for the 5.5 GHz W/MAX application. The T-junctions with a power ratio of 2 : 1 were used to design the feed network. To correct the stepped discontinuity of impedance change in common multi-section impedance transformer, exponential line matching trans- formers were adopted in the WiMAX frequency band. The reflection coefficient was lower than - 15 dB from 5.08 GHz to 5.87 GHz. The measured gain of the antenna array achieved 29.8 dBi on E-plane at 5.8 GHz.展开更多
Y2002-63354-211 0314463宽波段微带阵的新类别=A new class of wide-band mi-crostrip arrays[会,英]/Herscovici,N.∥2001 IEEE Ra-dio and Wireless Conference.—211~214(TE)Y2002-63382-88
一种变形的 V 形槽波导的特性分析[刊,中]/曹斌照//微波学报.—2005,21(2).—20-24(E)提出了一种变形的 V 形槽波导,并采用新提出的傅立叶展开-差分法对其特性进行了分析。通过对几种典型槽波导的波导波长的计算,验证了这种新方法的正...一种变形的 V 形槽波导的特性分析[刊,中]/曹斌照//微波学报.—2005,21(2).—20-24(E)提出了一种变形的 V 形槽波导,并采用新提出的傅立叶展开-差分法对其特性进行了分析。通过对几种典型槽波导的波导波长的计算,验证了这种新方法的正确性。该方法具有表达直观、计算简单易行等优点,可以更便捷地解决在毫米波槽波导应用中的实际工程问题。展开更多
基金Qingdao Basic Research of Science and Technology Plan Projects(No.13-1-4-132-jch)
文摘A mutual coupling suppression method is proposed for microstrip antenna array by cutting four small semi-circle annular apertures on the metal plate. The structure of antenna array is composed of 2 × 2 four elements. The antenna consists of double layer dielectric, and it realizes circular polarization characteristics by cutting rectangular slot on circular patch in the direction of 45°, by using aperture coupling feeding and reverse feeding principle. There is 90* phase difference between adjacent antenna elements. Thus, it cuts off the coupling current field between the elements, suppresses the surface wave and reduces the mutual coupling by cutting four semi-circle annular apertures symmetrically on the metal plate. The simulation results show that after cutting four semi-circle annular apertures, the antenna array coupling coefficients decrease significantly, and the side and back lobe levels are suppressed effectively with the gain of antenna improved. So the proposed method is effective to suppress microstrip antenna array mutual coupling.
基金Supported by the National Natural Science Foundation of China(No.60777014)the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20090032110027)
文摘A 16 × 16 micro-strip antenna array with high gain characteristic was proposed for the 5.5 GHz W/MAX application. The T-junctions with a power ratio of 2 : 1 were used to design the feed network. To correct the stepped discontinuity of impedance change in common multi-section impedance transformer, exponential line matching trans- formers were adopted in the WiMAX frequency band. The reflection coefficient was lower than - 15 dB from 5.08 GHz to 5.87 GHz. The measured gain of the antenna array achieved 29.8 dBi on E-plane at 5.8 GHz.
文摘Y2002-63354-211 0314463宽波段微带阵的新类别=A new class of wide-band mi-crostrip arrays[会,英]/Herscovici,N.∥2001 IEEE Ra-dio and Wireless Conference.—211~214(TE)Y2002-63382-88
文摘一种变形的 V 形槽波导的特性分析[刊,中]/曹斌照//微波学报.—2005,21(2).—20-24(E)提出了一种变形的 V 形槽波导,并采用新提出的傅立叶展开-差分法对其特性进行了分析。通过对几种典型槽波导的波导波长的计算,验证了这种新方法的正确性。该方法具有表达直观、计算简单易行等优点,可以更便捷地解决在毫米波槽波导应用中的实际工程问题。