Front-to-back ratio improvement of printed antennas based on electrically small resonators for microwave presence detectors
Aguilà Moliner, Pau (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Zuffanelli, Simone (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Zamora González, Gerard (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Paredes, Ferran (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Martín, Ferran, (Martín Antolín)
(Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Bonache Albacete, Jordi (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Date: |
2015 |
Abstract: |
The improvement of the front-to-back ratio (FBR) in low-profile antennas to be used in presence detection devices is explored. The main idea is to use electrically small resonators as radiating elements. This minimises the electric currents in the boundary of the ground plane at the working frequency, thus reducing the backward radiation. The choice of the resonant particle and its electromagnetic properties, along with the antenna structure, are discussed. The simulated results indicate that there is good impedance matching (-18 dB) at the operating frequency (3 GHz) and an excellent FBR of 24 dB. These characteristics are validated experimentally and the FBR is compared with that of a conventional patch antenna. |
Rights: |
Tots els drets reservats. |
Language: |
Anglès |
Document: |
Article ; recerca ; Versió acceptada per publicar |
Subject: |
UHF resonators ;
Antenna radiation patterns ;
Impedance matching ;
Microstrip antennas ;
Microwave detectors ;
Microwave resonators ;
UHF antennas ;
UHF detectors |
Published in: |
Electronics letters, Vol. 51, Issue 11 (2015) , p. 836-837, ISSN 0013-5194 |
DOI: 10.1049/el.2014.4303
The record appears in these collections:
Research literature >
UAB research groups literature >
Research Centres and Groups (research output) >
Engineering >
CIMITEC-UABArticles >
Research articlesArticles >
Published articles
Record created 2016-07-25, last modified 2022-09-04