Low profile frequency agile MIMO slot antenna with TCM characterization

Type
Conference Paper

Authors
Ghalib, Asim
Hussain, Rifaqat
Sharawi, Mohammad S.

KAUST Grant Number
KAUST-002

Online Publication Date
2017-06-07

Print Publication Date
2017-03

Date
2017-06-07

Abstract
In this paper, a frequency reconfigurable multiple-input-multiple-output (MIMO) slot antenna is presented. The proposed design is low profile and compact with wide tunability range, covering several well-known frequency bands from 1800 MHz to 2450 MHz. The frequency reconfigurability is achieved by loading the annular slot with varactor diodes. The antenna system is also analyzed for MIMO performance metrics. Moreover, the effect of circular slot antenna on the chassis modes is also investigated using the theory of characteristic modes (TCM). The physical principle behind frequency reconfigurability is also investigated using TCM analysis. An interesting finding is observed using varactor diodes for frequency reconfigurability, that is the reactive impedance loading does not alter the modal significance (MS) plots but only aid in the input impedance matching at different frequency bands.

Citation
Ghalib A, Hussain R, Sharawi MS (2017) Low profile frequency agile MIMO slot antenna with TCM characterization. 2017 11th European Conference on Antennas and Propagation (EUCAP). Available: http://dx.doi.org/10.23919/eucap.2017.7928198.

Acknowledgements
This work was funded by DSR at KFUPM, Kingdom of Saudia Arabia, under grant number KAUST-002.

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
2017 11th European Conference on Antennas and Propagation (EUCAP)

DOI
10.23919/eucap.2017.7928198

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