Broadband Microstrip Antennas Using Coplanar Feed-Line

Abstract

Abstract-This paper proposes two novel broadband microstrip antennas using coplanar feed-line. By feeding the patch with a suitable shape of the coplanar line in the slot of the patch, the broadband character is achieved. Compared with the antenna fed by a U-shaped feed-line, the antenna with L-shaped feed-line not only has wider bandwidth but also achieves the circular polarization character. The measured bandwidths of 25% and 34% are achieved, and both of the antennas have good radiation characteristics in the work band.

Analysis of U-slot loaded truncated corner rectangular microstrip patch antenna for broadband operation

“…Therefore, various types of antenna design techniques such as cutting of slot and U-slot loading patch [7][8][9], slot loaded stacked patch [10] and E-H shaped with superstrate was proposed in [11] with a bandwidth up to 30%. The antenna is designed by using different feeding techniques such as coplanar feed-line [12], L-probe proximity fed annular ring microstrip antennas [13] and electromagnetically coupled microstrip antenna with V-slots and notches for broadband operation have been proposed in [14] and its bandwidth up to 51% with gain 7 dBi. One of the most popular techniques is the use of a multilayer structure consisting of several parasitic patch antenna structure appeared in [15,16] the literature on bandwidth enhancement of microstrip antenna.…”

Quad-Band Dual-Layer Microstrip Antenna Design for Mobile Handset

“…Sayidmarie et al [14], designed a compact dual-band; dual ring printed monopole antenna for WLAN applications. Wang et al [15], designed two broad bands MPA using planer line feed to enhance band width by 25%. AL Mously [16], designed a triple-band; multi-layer patch antenna for 0.9, 1.8 and 2.4 GHz frequency bands.…”