Universiti Teknologi Malaysia Institutional Repository

Harmonic cancellation of parallel-coupled bandpass filter with transmission zero realign method

Marimuthu, Jayaseelan and Esa, Mazlina (2005) Harmonic cancellation of parallel-coupled bandpass filter with transmission zero realign method. In: Asia-Pacific Conference on Applied Electromagnetics, 2005, Johor.

[img]
Preview
PDF
2MB

Official URL: http://dx.doi.org/10.1109/APACE.2005.1607822

Abstract

This paper presents the harmonic cancellation of a 3rd order Butterworth response parallel-coupled bandpass filter by introducing periodical grooves. The cancellation was obtained by aligning the transmission zero of the tight coupling (TCg) coupler with the harmonic of the weak coupling (WCg) coupler. The alignment of transmission zero and harmonic was carried out by introducing square grooves periodically at the TCg and WGc couplers. Various numbers of grooves were introduced at the TCg and WCg couplers. By varying the number of grooves at the TCg coupler, the first transmission zero was obtained. Then similar method was used to align the harmonics of the WCg coupler with transmission zero of the TCg coupler. When three stage bandpass filter design with transmission zero of the TCg coupler is aligned with the harmonic of the WCg coupler, the overall the performance of filter improved in terms of suppression of the harmonics and cutoff frequencies.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:bandpass
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:21358
Deposited By: Liza Porijo
Deposited On:07 Feb 2017 06:46
Last Modified:31 Oct 2017 04:51

Repository Staff Only: item control page