Planar Substrate Integrated Waveguide Cavity-Backed Antenna

Author

Bohórquez, Juan Carlos ; Pedraza, Humberto Adriel Forero ; Pinzón, Iván Camilo Herrera ; Castiblanco, Jorge Avella ; Peña, Néstor ; Guarnizo, Hector Fabian

Author_Institution

Dept. of Electr. & Electron. Eng., Los Andes Univ., Bogota, Colombia

Volume

8

fYear

2009

fDate

7/1/1905 12:00:00 AM

Firstpage

1139

Lastpage

1142

Abstract

A new cavity-backed antenna compatible with planar technology is designed, manufactured, and measured. The original design consists of a slotted cavity fed by a microstrip line. This allows the implementation of the feeding line and the cavity on a single substrate, compatible with a standard printed circuit board (PCB) or low-temperature cofired ceramic (LTCC) process. The idea is to combine specific slot patterns on the cavity back face such as meandered and edge slots. An example is presented, and the measurements show minimum 10-dB return loss bandwidth of 1.32%, 8.5 dBi gain, and 21 dB front-to-back ratio. The combination of volume cavity, planar feeding, and antenna layout, leads to light weight, easy fabrication, and easy integration with planar circuits.

Keywords

microstrip antennas; microstrip lines; planar antennas; planar waveguides; printed circuits; slot antennas; substrates; front-to-back ratio; low-temperature cofired ceramic process; microstrip line; planar circuits; planar substrate integrated waveguides; slotted cavity; standard printed circuit board; waveguide cavity-backed antenna; Cavity-backed; slot antenna; substrate integrated waveguide (SIW);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2009.2034399

Filename

5286279