Analysis and design of broadband microstrip patch antenna with a pair of double cross-shaped slots

Abstract

A novel method of designing broadband microstrip antenna is proposed in this paper. By embedding a pair of Cross-shaped slots placed close to the non-radiating edges of a microstrip patch and adding an air layer between the substrate and the ground, the broadband character can be achieved. What's more, the formulas for calculating the two resonant frequencies have been experimentally deduced. Employing the method and the formulas, a antenna with a pair of double cross-shaped is designed. The measured bandwidth of 15.2% is achieved with small sizes, and the good radiation characteristic for operating frequencies within the impedance bandwidth is also observed.I.

Methods to Design Microstrip Antennas for Modern Applications

“…1b) [6] , cross (Fig. 1c) [7], or U-shape. The microstrip elements etched with a U-slot could be rectangular or triangle patches (Fig.…”

Shorted-slots loaded patch antenna for dual-ISM band WLAN applications

“…In the literature [1] presents by chiseling slots on the patch radiator to increase operating bands, but the bandwidth is not enough in the upper-operating band. In the literature [2], to chisel the cross-slot on the patch radiator will increase the operating bandwidth, but just resonant single band. In the literatures [3,4,5], there are also many slots structure could resonant multi-bands, however, the operating bandwidth could not meet the requirement of the dual-ISM band system spec.…”