TY - JOUR
T1 - Multipolarization-Reconfigurable Circular Patch Antenna with L-Shaped Probes
AU - Lin, Wei
AU - Wong, Hang
N1 - Funding Information:
Manuscript received November 20, 2016; accepted December 28, 2016. Date of publication January 5, 2017; date of current version June 12, 2017. This work was supported in part by the Research Grants Council of the Hong Kong, under Project no. CityU138413, in part by the National Science and Technology Major Project under Grant 2015ZX03001006, and in part by the Guangdong Joint Innovation Project in Guangdong Province under Grant 2014B050504002.
Publisher Copyright:
© 2017 IEEE.
PY - 2017/1
Y1 - 2017/1
N2 - This letter introduces a multipolarization-reconfigurable circular patch antenna with eight L-shaped probes. By adopting the L-probe feeding structure, the reported circular patch antenna is compact, simple, and low-profile. It has switchable 0°, +45°, 90°, and -45° linear polarizations and is able to mitigate the polarization mismatch problem in complex wireless channels. This polarization reconfigurability is realized by controlling a set of p-i-n diodes via a switchable feeding network. Measured results show that the antenna has excellent electrical performance for all operating states. The overlapping impedance bandwidth (when the reflection coefficient ≤ -10 dB) is 17.6%, from 2.325 to 2.775 GHz, which covers both the WLAN and ISM bands. The gain is very stable across the entire bandwidth with a 6.1-dBi peak value, and the cross-polarization levels are low. Moreover, good cardioid-shaped radiation patterns are attained.
AB - This letter introduces a multipolarization-reconfigurable circular patch antenna with eight L-shaped probes. By adopting the L-probe feeding structure, the reported circular patch antenna is compact, simple, and low-profile. It has switchable 0°, +45°, 90°, and -45° linear polarizations and is able to mitigate the polarization mismatch problem in complex wireless channels. This polarization reconfigurability is realized by controlling a set of p-i-n diodes via a switchable feeding network. Measured results show that the antenna has excellent electrical performance for all operating states. The overlapping impedance bandwidth (when the reflection coefficient ≤ -10 dB) is 17.6%, from 2.325 to 2.775 GHz, which covers both the WLAN and ISM bands. The gain is very stable across the entire bandwidth with a 6.1-dBi peak value, and the cross-polarization levels are low. Moreover, good cardioid-shaped radiation patterns are attained.
KW - L-probe feed
KW - multipolarization-reconfigurable antenna
KW - p-i-n diodes
KW - patch antenna
KW - polarization mismatch
UR - http://www.scopus.com/inward/record.url?scp=85027158715&partnerID=8YFLogxK
U2 - 10.1109/LAWP.2017.2648862
DO - 10.1109/LAWP.2017.2648862
M3 - Journal article
AN - SCOPUS:85027158715
SN - 1536-1225
VL - 16
SP - 1549
EP - 1552
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
M1 - 7807305
ER -