Wideband Circularly Polarized Patch Antennas on Reactive Impedance Substrates

Author

Bernard, L. ; Chertier, G. ; Sauleau, R.

Author_Institution

Optronic & Telemetry for Ballistic Group, French-German Res. Inst. of St.-Louis (ISL), St. Louis, France

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

1015

Lastpage

1018

Abstract

A reduced-size wideband single-feed circularly polarized patch antenna is introduced for telemetry applications in S-band around 2300 MHz. The proposed structure consists of a slot-loaded patch antenna printed over an optimized metamaterial-inspired reactive impedance substrate (RIS). We demonstrate, step by step, the main role of each antenna element by comparing numerically and experimentally the performance of various antenna configurations: antenna over a single- or dual-layer substrate, standard patch or slot-loaded patch, antenna with or without RIS. The final optimized structure exhibits an axial-ratio bandwidth of about 15% and an impedance bandwidth better than 11%, which is much wider than the conventional printed antenna on the same materials.

Keywords

broadband antennas; metamaterial antennas; microstrip antennas; optimisation; polarisation; slot antennas; substrate integrated waveguides; telemetry; RIS; S-band; circular polarization; impedance bandwidth; metamaterial; optimization; printed antenna; reactive impedance substrate; slot antenna; telemetry; wideband patch antennas; Antenna measurements; Bandwidth; Impedance; Patch antennas; Slot antennas; Substrates; Circular polarization; meta-substrates; printed antenna; reactive impedance substrate (RIS);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2168803

Filename

6022742