Realisation of carved and iris groove gap waveguide filter and E-plane diplexer for V-band radio link application
Journal article, 2017
The gap waveguide technology is a promising candidate as a cost-effective and low-loss platform for realizing microwave devices particularly at frequencies higher than 40GHz. In this study, two types of groove gap waveguide filters and also a diplexer are presented. Coupling mechanism of these filters is based on carving on the pin plate and iris between adjacent cavities. Two fifth-order Chebyshev filters are realised at 62.5GHz. The proposed diplexer consists of RX and TX iris groove gap waveguide filters at the centre frequency of 59.5 and 62.5GHz and an E-plane groove gap waveguide T-junction. The required transition of the groove gap waveguide to WR-15 is designed and used as an input port of the filters. Moreover, E-plane groove gap waveguide T-junction is designed as the connecting part of the groove gap waveguide filters to the WR-15 antenna port. Finally all parts are integrated. The proposed diplexer is manufactured in aluminium by sawing and milling and then silver plating is done. The RX and TX passbands of the diplexer is around 1.7 and 2.4% with the measured return loss better than 13.6dB and minimum insertion loss of 0.9 and 0.8dB, respectively.
iris groove gap waveguide filter
waveguide filters
E-plane groove gap waveguide T-junction
frequency 52 GHz to 63
fifth-order Chebyshev filters
return loss
millimetre wave antennas
wideband transition
V-band radio link application
insertion loss
5 GHz
Chebyshev filters
silver plating
WR-15 antenna port
RX passbands
pin plate
carved groove gap waveguide filter
TX passbands
E-plane diplexer
low-loss platform
radio links
cost-effective platform
millimetre wave filters
groove gap waveguide diplexer
microwave devices
coupling mechanism
waveguide antennas
Author
M. Rezaee
Ashraf Uz Zaman
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
IET Microwaves, Antennas and Propagation
1751-8725 (ISSN) 17518733 (eISSN)
Vol. 11 15 2109-2115Subject Categories
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1049/iet-map.2017.0268