Design of X-Polarized GSM 900 Base Station Antenna with Field Test Measurement

2‐bit polarisation agile antenna with high port decoupling

“…In the following approach any fourelement antenna with circular symmetry can be used as many base station antennas fulfil this requirement [2,3]. Here, we use an antenna consisting of four capacitively fed monopoles excited through coaxial ports arranged symmetrically as shown in Fig.…”

“…Generally, the class of antennas used to achieve these polarisation states consist of two crossed radiating elements. Some actual embodiments of this principle are given in [2,3]. Recently, there has been interest in a developing modebased strategy in order to decouple closely spaced antennas by generating orthogonal radiation patterns with beamforming [4], the objective being to exploit the antenna eigenmodes to achieve both decoupling and orthogonal radiation patterns in order to increase channel capacity in densely packed antenna scenarios.…”

A Compact Dual-Polarized Antenna for Base Station Application

“…Some of these antennas [2,7,8] have a narrow impedance bandwidth that cannot cover the bandwidth from 790 MHz to 960 MHz. The gain of base station antenna in the forms of patch antenna [4-6, 9, 10] and cross dipole antenna [2,8] is not high enough to meet the application requirement.…”

“…To satisfy the demand of European Digital Dividend (791 ∼ 862 MHz), CDMA800 (825 ∼ 880 MHz), and GSM900 (889 ∼ 960 MHz) simultaneously, the dual-polarized antenna should cover the bandwidth of 790 ∼ 960 MHz. Although many kinds of base station antennas have been proposed in [2][3][4][5][6][7][8][9][10][11][12][13][14], there are still some improvements should be made. Some of these antennas [2,7,8] have a narrow impedance bandwidth that cannot cover the bandwidth from 790 MHz to 960 MHz.…”

“…Although many kinds of base station antennas have been proposed in [2][3][4][5][6][7][8][9][10][11][12][13][14], there are still some improvements should be made. Some of these antennas [2,7,8] have a narrow impedance bandwidth that cannot cover the bandwidth from 790 MHz to 960 MHz. The gain of base station antenna in the forms of patch antenna [4-6, 9, 10] and cross dipole antenna [2,8] is not high enough to meet the application requirement.…”