Compact hybrid CPW‐FED slot antenna array with pattern diversity

Abstract

In this paper, a compact hybrid coplanar waveguide (CPW) fed 1 Â 2 slot antenna array with radiation pattern diversity is proposed for the wireless local area networks (WLAN) application. The antenna array consists of two rectangular slot radiation elements, two feed slots, a CPW and an open-ended strip. The feed network provides out-phase and in-phase feed with high isolation in a relatively compact structure without any lossy circuits, and difference and sum radiation patterns are achieved in the azimuth plane with wide bandwidths of 480 MHz (20%) and 580 MHz (24.2%). The measured gains of dual-pattern are better than 4.93 and 3.76 dBi in the WLAN band (2.4-2.484 GHz). The proposed dual-port array can be used as pattern diversity in modern mobile system.

Electrically small shorted patch antenna array with switchable radiation patterns for indoor messaging system

“…We can hence regard the pairs of P1 and P2, and of P3 and P4 as independent antenna arrays to each other. The principle of the individual antenna-element-pairs is similar to that of the 1 × 2 slot antenna array reported in [5]. The block diagram of the antenna array is shown in Fig.…”

Low‐profile and broadband microstrip antenna with pattern diversity

“…Diversity antennas can effectively improve channel reliability and reduce the influence of multipath fading without increasing the power of the signal transmission, 1 which are divided into three types, including spatial diversity antenna, 2,3 polarization diversity antenna, [4][5][6] and pattern diversity antenna. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] The pattern diversity antenna can reduce the interference of noise and the system coupling, improving radiation efficiency. A wide beam coverage can be achieved with pattern diversity without additional spectrum resources.…”

“…One is to integrate radiation units with various radiation patterns. [8][9][10][11][12][13][14][15][16] Li et al 8 designed an antenna with a broadside pattern and omnidirectional pattern by inserting a SIW cavity at the center of the patch antenna. A monocone antenna and a microstrip antenna are combined to generate two different patterns.…”

“…The techniques for realizing pattern diversity can be categorized into two classes until now. One is to integrate radiation units with various radiation patterns 8–16 . Li et al 8 designed an antenna with a broadside pattern and omnidirectional pattern by inserting a SIW cavity at the center of the patch antenna.…”