Affiliation:
1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China
Abstract
A multi-stub loaded loop resonator (MSLLR) is proposed in this paper, which exhibits five main resonant modes of interest. Then, an ultra-wideband (UWB) bandpass filter is developed on it. Through direct source/load coupling, two transmission zeros can be created at both sides of the passband of the filter, which improves its frequency selectivity. The measured results of the fabricated filter show that its bandwidth can cover the UWB frequency range and the return loss in the passband is greater than 12.9[Formula: see text]dB. Frequency selectivity is improved due to two transmission zeros at both sides of the passband. Group delay variation is less than 0.48[Formula: see text]ns in the passband, which is relatively flat.
Funder
Ministry of Science and Technology of China
Open Foundation of State Key Laboratory of Electronic Thin Films and Integrated Devices
Publisher
World Scientific Pub Co Pte Lt
Subject
Electrical and Electronic Engineering,Hardware and Architecture,Electrical and Electronic Engineering,Hardware and Architecture
Cited by
1 articles.
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