Vol. 45

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2013-10-28

A Spiral Slot Antenna with Reconfigurable CPW-to-Slotline Transition for Polarization Diversity

By Yihong Chen, Fu-Shun Zhang, Mao-Ze Wang, Jinlin Li, and Yuyu Chen
Progress In Electromagnetics Research C, Vol. 45, 73-85, 2013
doi:10.2528/PIERC13081901

Abstract

A polarization reconfigurable spiral slot antenna with polarization states switched among left-hand circular polarization (LHCP), right-hand circular polarization (RHCP) and linear polarization (LP) is proposed in this paper. The antenna consists of a coplanar waveguide (CPW) input, a pair of reconfigurable CPW-to-slotline transitions, two separated same size single-arm spiral slot radiators, and four PIN diodes for reconfigurability. A good impedance match (VSWR≤2) for both linear and circular polarization is achieved from 2.1 to 2.9 GHz. The bandwidth for axial ratio AR≤3 dB for both RHCP and LHCP states ranges from 2.27 to 2.66 GHz (15%). The simulation and measurement results agree well and hence sustain the reconfigurability of the proposed design.

Citation


Yihong Chen, Fu-Shun Zhang, Mao-Ze Wang, Jinlin Li, and Yuyu Chen, "A Spiral Slot Antenna with Reconfigurable CPW-to-Slotline Transition for Polarization Diversity," Progress In Electromagnetics Research C, Vol. 45, 73-85, 2013.
doi:10.2528/PIERC13081901
http://jpier.org/PIERC/pier.php?paper=13081901

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