Second harmonic suppression characteristic of a grooved bandpass filter


Marimuthu, , Jayaseelan and Esa, , Mazlina (2005) Second harmonic suppression characteristic of a grooved bandpass filter. APACE: 2005 Asia-Pacific Conference on Applied Electromagnetics, Proceedings. pp. 227-231.

Full text not available from this repository.


In analysing the performance of any communication system, degradation is usually caused by unwanted signals. Filters are hence placed at desired locations to filter out these unwanted frequencies. However, the presence of significant harmonic signals that can be generated by devices such as mixers can easily contribute to the unwanted frequencies. Special attention has to be given in suppressing the second harmonic present in the filter output. This paper presents the design of a parallel-coupled bandpass filter having grooved structures. The chosen frequency of operation is 2.5 GHz, suitable for wireless communication system. The proposed design improvements were investigated for Chebyshev response filters. The filters consist of several filter orders, each having different number of grooves. Experimental investigations revealed that as the number of grooves increases, the second harmonic signal decreases. However, it is interesting to note that the behaviour changed with the presence of seven grooves.

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 24 Aug 2011 01:57
Last Modified: 24 Aug 2011 01:57


Downloads per month over past year

View ItemEdit (login required)