Design Of A Single-Ridged Waveguide Test-Set For The 28 GHz Band

Abstract

This paper describes the design of a novel test-set for single-ridged waveguides in the 28.5 GHz band. The test-set composes of three main parts: a waveguide transformer with a 900 bend,a part of an antenna array (slots) represented by a ridged waveguide transmission line and a load. The transformer provides a single-ridged-waveguide-to-standard-WR-28 transition and vice versa. This transition forms the interface to the measurement equipment and parts of its design will also be applied to the original design of the antenna. The load can be tested by connecting it to the singleridged output port of the adapter or to the waveguide transmission line. This saves precious development time and costs, and enables also an accurate verification of the adapter design. The waveguide transmission line can be used to test different slot configurations. Some simulations have been performed to investigate the tolerance values required for manufacturing the test-set.

Wideband compact single‐ridge waveguide to rectangular waveguide transitions with integrated E ‐plane bend

“…SRW transitions are treated in [3], however these solutions make use of multi‐section quarter‐wave Chebyshev transformers resulting way too bulky in applications where compactness is mandatory. A similar structure is described in [4], where a three‐step in‐line ridged transition is designed to obtain an excellent return loss over a wide bandwidth. Also in this case the size can be strongly reduced.…”

“…Also in this case the size can be strongly reduced. In addition to this all identified components [2][3][4] present an in-line waveguide output port, while in many applications the use of an E-plane bend is necessary, as the input/output port may be located in an internal region of the waveguide circuit. In this Letter, two novel SRW to RW transitions are proposed, whose key features are the extreme compactness and wideband performance.…”