Abstract
This paper presents two 180° 3-dB waveguide couplers with integrated filtering functions, focusing on techniques to enable tight amplitude balance without compromising performance or requiring extra circuitry. A 3D-printed conventionally-designed coupler is first used to illustrate the intrinsic amplitude imbalance caused by asymmetric electrical paths. By adjusting the iris positions, a modified filtering coupler was designed to demonstrate significantly enhanced amplitude balance, as well as reduced phase error across the whole passband. A tight measured amplitude balance of under 0.1 dB is achieved with this X-band coupler. The design also features loaded cavity resonators of equal outer dimensions, making the layout easy and more suitable for complex signal distribution networks based on couplers.
| Original language | English |
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| Title of host publication | 2022 52nd European Microwave Conference (EuMC) |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| Pages | 254-257 |
| Number of pages | 4 |
| ISBN (Electronic) | 9782874870699 |
| ISBN (Print) | 9781665458818 (PoD) |
| DOIs | |
| Publication status | Published - 31 Oct 2022 |
| Event | 52nd European Microwave Conference, EuMC 2022 - Milan, Italy Duration: 27 Sept 2022 → 29 Sept 2022 |
Publication series
| Name | European Microwave Conference |
|---|---|
| Publisher | IEEE |
| ISSN (Print) | 2325-0305 |
Conference
| Conference | 52nd European Microwave Conference, EuMC 2022 |
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| Country/Territory | Italy |
| City | Milan |
| Period | 27/09/22 → 29/09/22 |
Bibliographical note
Publisher Copyright:© 2022 European Microwave Association (EuMA).
Keywords
- balanced output
- filtering coupler
- waveguide
ASJC Scopus subject areas
- Computer Networks and Communications
- Hardware and Architecture
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Radiation