Reconfigurable RF quadrature patch hybrid coupler

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article number6203412
Pages (from-to)3349-3359
Journal / PublicationIEEE Transactions on Industrial Electronics
Volume60
Issue number8
Online published21 May 2012
Publication statusPublished - Aug 2013

Abstract

A highly reconfigurable radio frequency patch hybrid coupler with a simple topology is presented for the first time. Due to the introduction of lumped equivalent circuit and flexibility of varactor loaded patterned ground plane, the complex reconfigurability in port arrangement and coupling coefficient can be implemented. Varying the capacitance across different planes allows the electronic switching between different operating modes of the patch hybrid coupler. When the auxiliary patch and patterned ground plane is placed closer to the two output ports, tunable coupling coefficient can also be implemented by changing the capacitance. This results in wide band reconfigurability for the coupling coefficient range. For demonstration purposes, a patch hybrid coupler operating at 2.4 GHz is designed and measured to validate the port reconfigurable concept. Also, a patch hybrid coupler with tunable coupling coefficient operating at 3.5 GHz is designed, fabricated, and measured. This circuit gives a reconfigurable coupling coefficient ranging from-4.2 to-10 dB while maintaining good performance. © 1982-2012 IEEE.

Research Area(s)

  • Coupling coefficient reconfigurable, patch hybrid coupler, port reconfigurable, varactor loaded patterned ground plane

Citation Format(s)

Reconfigurable RF quadrature patch hybrid coupler. / Zheng, Shao Yong; Chan, Wing Shing; Wong, Yuk Shing.

In: IEEE Transactions on Industrial Electronics, Vol. 60, No. 8, 6203412, 08.2013, p. 3349-3359.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review