As is well known, metallic cavity backings reduce antenna gain particularly for broadband
configurations at low frequencies. This letter presents a novel reflective surface consisting of …

The use of a backing cavity composed of a frequency selective surface (FSS) above a metal
plate as a means to suppress the back lobe radiation and increase the gain of an …

The development of a low profile, lightweight, broadband spiral antenna for airborne
applications is described. The use of an electromagnetic band gap substrate with loads as …

A low-profile spiral antenna backed by a circular high-impedance surface (HIS) reflector
composed of homogeneous (CirHISRhomo) fan-shaped patch elements is investigated. The …

This paper presents the design of a low profile, lightweight, broadband spiral antenna for
airborne applications. A thin modified electromagnetic band gap substrate with load is used …

Low-profile wideband spiral antennas suffer from poor impedance matching and cross
polarization at lower frequencies or high variation in gain at higher frequencies. These …

This paper presents the performance of a spiral antenna over an electromagnetic band-gap
(EBG) surface that is designed to operate over a broadband that matches the bandwidth of …

Here, a hybrid backed-cavity with electromagnetic band-gap (EBG) structure and a perfect
electronic conductor (PEC) is proposed for an Archimedean spiral antenna. This cavity …

In this paper, performance enhancement in a shorted polygonal archimedean spiral antenna
has been proposed by backing it with a hybrid reflector. In the proposed work, two arms of …

In this paper we investigate the azimuthal pattern symmetry of an Archimedean spiral
antenna which is designed to operate over the frequency range 3-10 GHz. The performance …