IEICE Transactions on Electronics
Online ISSN : 1745-1353
Print ISSN : 0916-8524
Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies
Downsized Bow-Tie Antenna with Folded Elements
Mio NAGATOSHIShingo TANAKASatoru HORIUCHIHisashi MORISHITA
Author information
JOURNAL RESTRICTED ACCESS

2010 Volume E93.C Issue 7 Pages 1098-1104

Details
Abstract

It has been reported that by adding two folded elements, bow-tie antenna can be miniaturized, but the antenna has VSWR degradation problem. In this paper, the details of the VSWR degradation are investigated and the physical mechanism of the degradation is clarified. The best position for folded element is also shown. Moreover, the bow-tie antenna is bent in half in order to realize more size reduction. When the two folded elements are added to the half bent bow-tie antenna, the lowest operation frequency goes down and the proposed antenna can be more downsized than the previous proposed antenna. The gain is slightly lower than that of the previous model, however, the antenna area is reduced from 31%, which is the antenna area ratio of privious proposed antenna and conventional bow-tie antenna, to 19%. The bandwidth of 92% is obtained for VSWR≤2.

Content from these authors
© 2010 The Institute of Electronics, Information and Communication Engineers
Previous article Next article
feedback
Top