Coplanar waveguide‐FED planar spiral antenna with integrated impedance transformer. Issue 6 (27th March 2013)

• Record Type: Journal Article
• Authors: Vahidpoor, Zeynab; Forooraghi, Keyvan; Fotowat‐Ahmady, Ali; Atlasbaf, Zahra
• Is Part Of: Microwave and optical technology letters. Volume 55:Issue 6(2013:Jun.)
• Page Start: 1338
• Page End: 1341
• Publication Date: 2013-03-27
• Subjects: Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.27535
• Languages: English
• ISSNs: 0895-2477

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A new planar spiral antenna with integrated impedance transformer is presented which needs no external balun and can be fed by a coplanar waveguide.The proposed structure has a return loss of &lt;−10 dB over a broad bandwidth of 0.5–5 GHz that is suitable for cognitive radio applications. The effects of different spiral and transformer parameters are investigated through various simulations. A case of the proposed antenna is fabricated, and measurement results are presented including return loss, gain, and radiation patterns. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1338–1341, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27535</p> </abstract>