Tunable defected ground slits for mutual coupling reduction applications

Author

Mavridou, Marina ; Feresidis, Alexandros P. ; Gardner, Peter ; Hall, Peter S.

Author_Institution

Sch. of Electr., Electron. & Comput. Eng., Univ. of Birmingham, Birmingham, UK

fYear

2012

fDate

12-13 Nov. 2012

Firstpage

1

Lastpage

4

Abstract

Novel tunable slit structures in a ground plane are presented for reducing the electromagnetic coupling between closely spaced monopole antennas. Ultra wideband CPW-fed monopoles are employed in order to demonstrate the tuning range of the slits. The proposed slits are etched in the common ground between the monopoles and the tuning is provided by a varactor diode placed within the slit. A tunable transmission zero is obtained in the S21 leading to a significant reduction of the mutual coupling within the antennas´ operating frequency band. The proposed slits have a small size and are positioned close to the edge of the ground plane thereby occupying very little space. Simulation results were obtained in 3D electromagnetic simulation software (CST Microwave studio) and are presented.

Keywords

MIMO communication; monopole antennas; 3D electromagnetic simulation software; CST microwave studio; antenna operating frequency band; electromagnetic coupling; ground plane; mutual coupling reduction application; spaced monopole antennas; tunable defected ground slits; tunable slit structures; tunable transmission zero; ultra wideband CPW fed monopoles; varactor diode; Antennas; Arrays; Capacitance; Mutual coupling; Varactors; MIMO antennas; Mutual coupling; UWB monopoles; tunable structures;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Conference (LAPC), 2012 Loughborough

Conference_Location

Loughborough

Print_ISBN

978-1-4673-2218-8

Electronic_ISBN

978-1-4673-2219-5

Type

conf

DOI

10.1109/LAPC.2012.6403081

Filename

6403081