A Compact CSRR-Enabled UWB Diversity Antenna

The purpose of this letter is to introduce a compact ultrawideband (UWB) diversity antenna with a very low envelope correlation coefficient (ECC). The design employs a hybrid isolation enhancing and miniaturization technique. The antenna consists of two counter facing monopoles, and is miniaturized...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2017, Vol.16, p.808-812
Main Authors: Khan, Muhammad Saeed, Capobianco, Antonio-D, Asif, Sajid M., Anagnostou, Dimitris E., Shubair, Raed M., Braaten, Benjamin D.
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna measurements
Bandwidth
complementary split-ring resonator (CSRR)
continuous spectrum
filter
Frequency measurement
integrated components
MIMO
monopole radiator
multiple-input–multiple-output (MIMO)
Mutual coupling
Ultra wideband antennas
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Summary:The purpose of this letter is to introduce a compact ultrawideband (UWB) diversity antenna with a very low envelope correlation coefficient (ECC). The design employs a hybrid isolation enhancing and miniaturization technique. The antenna consists of two counter facing monopoles, and is miniaturized by using not only inverted-L stubs but also a complementary split-ring resonator (CSRR) on the ground plane. The added components enhance isolation and enable tighter packing of the antennas. The result is a very compact multiple-input-multiple-output (MIMO) array with an overall size of 23 × 29 mm 2 , which covers the entire UWB spectrum from 3 to 12 GHz, with mutual coupling lower than -15 dB. Moreover, the CSRR unit that acts as a resonator is applied for the first time to suppress the interference of RF currents flowing through the ground plane of this UWB-MIMO/diversity antenna. The performance of the fabricated prototype in terms of scattering parameters, broadside (peak) gain, radiation patterns, efficiency, and ECC is presented and discussed.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2016.2604843