Enhancing the efficiency of compact patch antennas composed of split ring resonators by using lumped capacitors
Journal article, 2012

A new type of small patch antenna with low profile and enhanced radiation efficiency is proposed in this letter. The antenna is realized with a double layer of low-permittivity material (polypropylene, εr = 2.2). The lower layer is used for the feeding of the antenna, and split ring resonators (SRRs) are printed on top of the upper layer acting as radiating elements. The compactness is provided by shorting the rings to the ground plane with two metal pins. Although this antenna presented initially a dual band of operation, it has been demonstrated how the use of a lumped capacitor in the inner ring can increase the total radiation efficiency of the antenna performing a single-band response. Therefore, when the two original operation frequency bands coincide, a manufactured prototype of the antenna demonstrated a measured radiation efficiency of 73% that can be provided at the operation frequency of 1.29 GHz.

Author

Elena Pucci

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Eva Rajo

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Malcolm Ng Mou Kehn

National Chiao Tung University Taiwan

Oscar Quevedo Teruel

Queen Mary University of London

IEEE Antennas and Wireless Propagation Letters

1536-1225 (ISSN)

Vol. 11 1362-1365 6353501

Areas of Advance

Information and Communication Technology

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/LAWP.2012.2227662

More information

Latest update

5/17/2018