A Switchable-Frequency Slot-Ring Antenna Element For Designing A Reconfigurable Array

Keywords

Antenna arrays; reconfigurable antennas; shared-aperture antennas; slot antennas; switchable-frequency antennas

Abstract

A frequency-reconfigurable slot-ring antenna switching between L- and C-bands is presented. The aperture of an L-band slot-ring antenna can be reconfigured to a 2 × 2 C -band slot-ring antenna array by changing the states of 16 p-i-n diode switches. This antenna operates at 1.76/5.71 GHz with a fractional bandwidth of 8.6%/11.5% in the L/C-band operating states, respectively. The measured realized gain and radiation efficiency are 0.1/4.2 dBi and 66.6%/80.7%, respectively. The antenna element spacing at 5.71 GHz is 0.36λ0, which enables beamsteering without grating lobes. This shared-aperture antenna is scalable to a larger array with element spacing of less than half-wavelength in both frequency bands.

Publication Date

2-1-2018

Publication Title

IEEE Antennas and Wireless Propagation Letters

Volume

17

Issue

2

Number of Pages

229-233

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/LAWP.2017.2781463

Socpus ID

85038351257 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85038351257

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