Bandwidth Investigation on Half-Height Pin in Ridge Gap Waveguide
Journal article, 2018

Gap waveguide is a promising transmission structure, especially for millimeter-wave (mmW) and terahertz applications. It does not require conductive connection between the upper and the lower plates, which makes this technology gain advantages over conventional rectangular waveguides and substrate integrated waveguides in an mmW and terahertz regime. Different fabrication methods for gap waveguides should be employed for different frequency bands applied, such as molding, milling, die forming, electrical discharge machining, microelectromechanical systems, and 3-D printing. Therefore, different pin forms used in gap waveguides are required to match the applied fabrication methods. In this paper, a new pin form, the half-height-pin form, in gap waveguides is proposed for reducing the fabrication cost, and its stopband characteristics are investigated and compared with the previous full-height pins in gap waveguides at the V  -band. A device of a double-ridged gap waveguide with two 90° bends for verifying the stopband characteristic analysis of the new pin form has been designed and manufactured. The measured data confirm our analysis and simulations.

half-height-pin gap waveguide

Gap waveguide

stopband bandwidth


Fangfang Fan

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Xidian University

Jian Yang

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Vessen Vassilev

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Ashraf Uz Zaman

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN)

Vol. 66 1 100-108 8008807

Subject Categories

Production Engineering, Human Work Science and Ergonomics

Other Engineering and Technologies not elsewhere specified

Other Electrical Engineering, Electronic Engineering, Information Engineering

Areas of Advance

Information and Communication Technology



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