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- Title
Four-port diplexer for high Tx/Rx isolation for integrated transceivers.
- Authors
Konpang, Jessada; Sandhu, Muhammad; Somjit, Nutapong; Hunter, Ian C.
- Abstract
A four-port diplexer consisting of two back-to-back three-port diplexers combined with a 180° phase shifter in one branch is presented. The technique achieves high Tx/Rx isolation with relatively low degree filters. Two experimental diplexers are demonstrated, one with equal Q resonators in all filters and the other with dissimilar Q factors, enabling miniaturisation and cost reduction. Measured results of Tx/Rx diplexer devices at 2.13/1.73 GHz are presented and 40 dB Tx/Rx isolation is achieved with only second-order filters.
- Subjects
RADIO transmitter-receivers; PHASE shifters; NONLINEAR optical susceptibility; ELECTRIC resonators; PHYSICS experiments
- Publication
IET Microwaves, Antennas & Propagation (Wiley-Blackwell), 2018, Vol 12, Issue 6, p1034
- ISSN
1751-8725
- Publication type
Article
- DOI
10.1049/iet-map.2017.0878