Open AccessA Reconfigurable Microstrip Patch Antenna with Frequency and Circular Polarization Diversities
Author(s) -
Zhang Pengfei,
Liu Shizhong,
Chen Rongrong,
Huang Xinglin
Publication year - 2016
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2016.03.027
Subject(s) - patch antenna , microstrip antenna , pin diode , hybrid coupler , microstrip , reconfigurable antenna , circular polarization , coaxial antenna , antenna factor , optics , physics , antenna (radio) , optoelectronics , materials science , computer science , diode , telecommunications , power dividers and directional couplers
A novel microstrip patch antenna with both frequency and circular polarization diversities is presented. The proposed antenna consists of two parts, a patch with two orthogonal slots on the upper substrate and a 3dB hybrid coupler fed structure which printed on the lower substrate. Two groups of diodes placed across the orthogonal slots are utilized to achieve frequency reconfiguration. Another two diodes, placed between the input port of the antenna and the 3dB hybrid coupler, are utilized to switch between Left‐hand circular polarization (LHCP) and Right‐hand circular polarization (RHCP). Full wave simulation is used for the antenna analysis, and a prototype of the antenna with an integrated Direct current (DC) biasing circuit has been fabricated and measured. The results verify the reconfigurable characteristics of the antenna and demonstrate a good candidate for wireless communication applications.