A design method for patch antennas with wide frequency tunable range and stable conical radiation

A design for patch antennas with a wide‐frequency tuning range is presented. The antenna structure is composed of a top‐loaded monopole and a parasitic shorted ring patch. With a variable capacitor and a microstrip exponentially tapered line, the operating frequency of the antenna can be tuned betwe...

Full description

Saved in:
Bibliographic Details
Published in:Microwave and optical technology letters 2012-06, Vol.54 (6), p.1441-1445
Main Authors: Tsai, Jia-Fu, Shih, Chuang-Jiashih, Row, Jeen-Sheen
Format: Article
Language:English
Subjects:
conical radiation
frequency agility
patch antenna
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A design for patch antennas with a wide‐frequency tuning range is presented. The antenna structure is composed of a top‐loaded monopole and a parasitic shorted ring patch. With a variable capacitor and a microstrip exponentially tapered line, the operating frequency of the antenna can be tuned between two parallel resonant modes, both of which have symmetrical conical radiations. The key parameters of the proposed design are investigated for obtaining a maximum tuning range. A design procedure is also given. The results obtained demonstrate that the proposed antenna design can offer a frequency tuning range of more than 50%, and its radiation is stable within the range. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1441–1445, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26846
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.26846