Dipole and tripole metallodielectric photonic bandgap (MPBG) structures for microwave filter and antenna applications

Author

Lee, Y.L.R. ; Chauraya, A. ; Lockyer, D.S. ; Vardaxoglou, J.C.

Author_Institution

Dept. of Electron. & Electr. Eng., Loughborough Univ. of Technol., UK

Volume

147

Issue

6

fYear

2000

fDate

12/1/2000 12:00:00 AM

Firstpage

395

Lastpage

400

Abstract

A photonic band gap structure made from periodic arrays of conducting dipoles and tripoles on a dielectric is presented. Using the proposed structures, several example devices have been demonstrated for microstrip resonators and filters as well as patch antennas. Measured and predicted frequency responses of a microstrip line using a dual dipole metallodielectric photonic bandgap (MPBG) structure show a 40% band width centred at 10 GHz. A planar microstrip resonator using a dipole MPBG shows a slower wave performance and a higher Q factor when compared with the conventional half-wavelength resonator. Three patch antenna designs on different dielectric constant substrates using a tripole MBPG produce better return loss, higher boresight gains (up to 3 dB) and smoother radiation patterns as a result of surface wave suppression

Keywords

Q-factor; electric moments; microstrip antennas; microstrip resonators; microwave filters; microwave photonics; photonic band gap; 10 GHz; 3 dB; antenna applications; band width; conducting dipoles; conducting tripoles; dielectric constant substrates; dipole metallodielectric photonic bandgap structures; dual dipole metallodielectric photonic bandgap; frequency responses; half-wavelength resonator; higher Q factor; higher boresight gains; microstrip filters; microstrip line; microstrip resonators; microwave filter; patch antenna designs; patch antennas; periodic arrays; photonic band gap structure; return loss; smoother radiation patterns; surface wave suppression; tripole metallodielectric photonic bandgap structures;

fLanguage

English

Journal_Title

Optoelectronics, IEE Proceedings -

Publisher

iet

ISSN

1350-2433

Type

jour

DOI

10.1049/ip-opt:20000892

Filename

902326