TY - GEN
T1 - New Feed Mechanism for Dual-Polarized Microstrip Ring Patch Antenna
AU - Wang, Po Kai
AU - Ko, Ting Hung
AU - Row, Jeen Sheen
PY - 2019/3
Y1 - 2019/3
N2 - A novel feed mechanism for microstrip patch antennas is presented. The structure of the feed can be regarded as a coaxial balun, and it can be resonant in a one-wavelength loop mode. When the loop mode is properly coupled with the fundamental mode of the microstrip antenna, a broad impedance bandwidth and a symmetrical radiation pattern can be obtained. For the proposed feed, parametric analyses are first performed when it is applied into a square-ring patch antenna. Based on the simulation results, a dual-polarized ring patch antenna is then developed, and its prototype is constructed. Both measured and simulated results indicate that the antenna prototype has a gain of higher than 8 dBi and a cross polarization level of lower than -25 dB within an impedance bandwidth of about 12 %. In addition, the two orthogonal input ports has an isolation level of smaller than -30 dB across the whole operating frequency band.
AB - A novel feed mechanism for microstrip patch antennas is presented. The structure of the feed can be regarded as a coaxial balun, and it can be resonant in a one-wavelength loop mode. When the loop mode is properly coupled with the fundamental mode of the microstrip antenna, a broad impedance bandwidth and a symmetrical radiation pattern can be obtained. For the proposed feed, parametric analyses are first performed when it is applied into a square-ring patch antenna. Based on the simulation results, a dual-polarized ring patch antenna is then developed, and its prototype is constructed. Both measured and simulated results indicate that the antenna prototype has a gain of higher than 8 dBi and a cross polarization level of lower than -25 dB within an impedance bandwidth of about 12 %. In addition, the two orthogonal input ports has an isolation level of smaller than -30 dB across the whole operating frequency band.
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M3 - Conference contribution
T3 - 13th European Conference on Antennas and Propagation, EuCAP 2019
BT - 13th European Conference on Antennas and Propagation, EuCAP 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th European Conference on Antennas and Propagation, EuCAP 2019
Y2 - 31 March 2019 through 5 April 2019
ER -