A design of compact ultra wideband coupler for butler matrix

• Main Authors: Muklas, Nor Salehah, Abdul Rahim, Sharul Kamal, Seman, Norhudah, Abang Zaidel, Dyg Norkhairunnisa, Kim, Geok Tan, Reza, Ahmed Wasif
• Format: Article
• Published: Springer 2012
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/32745/; https://link.springer.com/article/10.1007%2Fs11277-012-0729-9

A design of 3 dB compact ultra wideband (UWB) coupler for a 4 × 4 Butler Matrix, which is operating between 3 and 11 GHz frequency range, is presented in this paper. The proposed design uses multilayer technology that allows having a compact and broad bandwidth coupler. The design uses elliptically...