Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Concept for the implementation of very high directivity and decade bandwidth in compact microstrip directional couplers

Alt, Alexander, Schwerg, Nikolai, Wangler, Christian and Gruner, Daniel 2017. Concept for the implementation of very high directivity and decade bandwidth in compact microstrip directional couplers. Presented at: 2016 46th European Microwave Conference (EuMC), London, UK, 3-7 October 2017. 2016 46th European Microwave Conference (EuMC). IEEE, pp. 210-213. 10.1109/EuMC.2016.7824315

[img]
Preview
PDF - Published Version
Download (673kB) | Preview

Abstract

A concept to induce a very high directivity and a flat coupling over a large bandwidth in compact microstrip directional couplers is presented. By introducing lumped element based compensation networks at the isolated and coupled port of a simple electrically short directional coupler, a very high directivity and a constant coupling over enormous bandwidths up to one decade can be achieved. With a design focusing on flat coupling, a high power directional coupler with a coupling length of only 50 mm, less then λ/25 at the middle of the band, was shown to have a coupling in the range of 52.11 dB ± 0.05 dB from 37.4 MHz to 200 MHz. In a further design step with focus on directivity and coupling flatness at the same, the coupling stayed within 55.25 dB ± 0.35 dB from 22 MHz to 164 MHz with a directivity of greater than 50 dB (30 dB) from 35 MHz to 84 MHz (20 MHz to 187 MHz).

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Publisher: IEEE
ISBN: 978-2-87487-043-9
Date of First Compliant Deposit: 31 July 2017
Last Modified: 09 Aug 2019 13:04
URI: http://orca-mwe.cf.ac.uk/id/eprint/103119

Actions (repository staff only)

Edit Item Edit Item

Downloads

Downloads per month over past year

View more statistics