Dual-Polarized Dual-Band Microstrip Antenna With Similar-Shaped Radiation Pattern

Author

Yan Wang ; Zhengwei Du

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

63

Issue

12

fYear

2015

Firstpage

5923

Lastpage

5928

Abstract

A dual-polarized dual-band (DPDB) microstrip antenna with two orthogonal feeding ports and similar-shaped radiation pattern is studied. The working mechanism of the dual-band operation and the similar-shaped radiation pattern is analyzed based on the S-parameters and the electric field distributions, respectively. A prototype shows that the measured impedance bandwidths for VSWR <; 2 are 150 MHz (810-960 MHz, 17%) and 550 MHz (1690-2240 MHz, 28%) with mutual couplings of lower than -32 and -26 dB at the lower and higher frequency bands, respectively. The antenna covers the GSM850/GSM900/GSM1800/GSM1900/UMTS bands for 2G/3G base station applications. Within the two frequency bands, the performance of similar-shaped radiation pattern, low cross-polarization, and stable gain is achieved.

Keywords

S-parameters; UHF antennas; antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; microstrip antennas; 2G-3G base station application; DPDB microstrip antenna; GSM850-GSM900-GSM1800-GSM1900-UMTS band; S-parameter; bandwidth 150 MHz; bandwidth 550 MHz; dual-polarized dual-band microstrip antenna; electric field distribution; frequency 1690 MHz to 2240 MHz; frequency 810 MHz to 960 MHz; low cross-polarization; orthogonal feeding port; similar-shaped radiation pattern; Antenna feeds; Antenna measurements; Antenna radiation patterns; Metals; Microstrip; Microstrip antennas; Substrates; Dual-band; Microstrip antenna; dual-band; dual-polarization; microstrip antenna; slot coupled;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2015.2487520

Filename

7293139