Array thinning by using antennas in a Fabry-Perot cavity for gain enhancement

By R. Gardelli, M. Albani, Filippo Capolino. 2006

292 citations recorded by the source corpus.

A Fabry–Perot cavity (FPC) between a ground plane and a partially reflective surface (PRS) is used here to design array antennas with large distance between the radiating elements. This configuration provides some advantages: i) a reduction of the number of array elements to achieve high directivity; ii) large space between contiguous elements that may host a bulky feeding network as required for dual polarization or active antennas; iii) small coupling and easy feeding network designs because of the smaller number of elements with larger inter-element distance. We show that when designing the FPC antenna a frequency shift of the gain maximum may occur, especially in this sparse array configuration. We also show the existence of preferred distances between elements that controls both the directivity and the side lobe level, and how the presence of the FPC and the relaxed requirement of the interelement distance result in a lower interelement coupling. The presented dual polarized antenna comprises two interleaved 2 x 2 arrays placed in a 2-layer FPC, and exhibits a 19 dBi gain and 30 dB of isolation between the two ports over an operating bandwidth of approximately 5.7%, i.e., typical for patch antennas.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/02664621759c2e65ae0d8dd2a7ba8bc1ddb8f16f

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Aerospace Engineering

1. Lotfollah Shafai
2. A. Foroozesh
3. Peter Hall
4. K. Konstantinidis
5. Alexandros P. Feresidis

In Electronic, Optical and Magnetic Materials

1. Peter Hall
2. Lotfollah Shafai
3. K. Konstantinidis
4. Alexandros P. Feresidis
5. A. Foroozesh

Citations in the corpus

• Multilayer Partially Reflective Surfaces for Broadband Fabry-Perot Cavity Antennas (2014, methodology): “Furthermore, in [14-16] directivity enhancement was achieved employing multiple EBG superstrates and an array of multiple sources instead of a single source.”
• Investigation Into the Effects of the Patch-Type FSS Superstrate on the High-Gain Cavity Resonance Antenna Design (2010, methodology): “Furthermore, antenna arrays have been used as the CRA feeds in [12] and [13], in order for the gains to reach as high as 30 dBi and higher.”