Dual-Polarized Crossed Bowtie Dipole Array for Wireless Communication Applications

Abstract

A dual-polarized array with downtilted radiation patterns is proposed for wireless communication applications. The proposed dual-polarized antenna element achieves an enhanced impedance bandwidth and compact dimensions by introducing a parasitic circular patch and vertical metal cylinders, which is a good candidate for radiating elements in base station antennas. By optimizing the amplitude and phase distribution along the feed, a radiation pattern with a downtilted angle is obtained. The dual-polarized array antenna achieves an impedance bandwidth for VSWR≤1.5, covering the frequency bands for 3G/LTE systems. Moreover, the proposed array achieves high port isolation, the stable antenna gain over the entire operating band. Therefore, the proposed array antenna is very suitable for potential wireless communication applications. A prototype has been manufactured and measured. The measurements, that match the design objectives, are also presented.

Features and Futures of Smart Antennas for Wireless Communications: A Technical Review

“…The system will turn on a beam towards a desired signal at a time in order to increase the received signal strength. If the received signal is changing direction or multiple desired signals exist, the system will turn on the appropriate beam, so that all the desired signals can be covered [51,52,81].…”

Effect of Randomness in Element Position on Performance of Communication Array Antennas in Internet of Things

“…The combination of the random position error and systematic distortion finally results in the randomness in element position. Finally, the electromagnetic performance of array antenna could be degraded, such as the gain loss, sidelobe level (SLL) rising, beam width broadening, and pointing error [5][6][7][8][9]. As a result, the communication distance will be shortened and the resistance to interference will be reduced, which seriously restricts the realization of high performance of array antenna.…”

Broadband Vertically/Horizontally Dual-Polarized Antenna for Base Stations

“…In recent years, lots of dual-polarized antennas have been developed for base stations [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Most of dual-polarized antennas consist of a patch [4][5][6][7][8][9][10][11][12][13] or two crossed dipoles [14][15][16][17][18][19]. It is well known that patch antennas and dipole antennas usually have different beam widths in the E-plane and H-plane.…”