Realisation of carved and iris groove gap waveguide filter and E‐plane diplexer for V‐band radio link application. Issue 15 (4th October 2017)

• Record Type: Journal Article
• Authors: Rezaee, Morteza; Zaman, Ashraf Uz
• Is Part Of: IET microwaves, antennas & propagation. Volume 11:Issue 15(2017)
• Page Start: 2109
• Page End: 2115
• Publication Date: 2017-10-04
• Subjects: waveguide filters -- waveguide antennas -- millimetre wave antennas -- radio links -- Chebyshev filters -- millimetre wave filters; carved groove gap waveguide filter -- iris groove gap waveguide filter -- E‐plane diplexer -- V‐band radio link application -- low‐loss platform -- cost‐effective platform -- microwave devices -- groove gap waveguide diplexer -- pin plate -- fifth‐order Chebyshev filters -- coupling mechanism -- E‐plane groove gap waveguide T‐junction -- wideband transition -- return loss -- WR‐15 antenna port -- silver plating -- TX passbands -- RX passbands -- insertion loss -- frequency 52 GHz to 63.5 GHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2017.0268
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : 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 40 GHz. 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 62.5 GHz. The proposed diplexer consists of RX and TX iris groove gap waveguide filters at the centre frequency of 59.5 and 62.5 GHz 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 13.6 dB and minimum insertion loss of 0.9 and 0.8 dB, respectively.