volume | PIER Journals

Abstract

In this paper, a novel diplexing power divider with a lowpass and two bandpass channels is presented. The lowpass channel is constructed by using a 7th-order quasi-elliptical transfer function, while the dual-band bandpass response is obtained by using co-directional split ring resonators. A lowpass-bandpass diplexer is first designed by integrating the lowpass and bandpass filters directly. In order to achieve the power division within the entire frequency range, a multi-section power divider is located at the end of both filter structures. The proposed lowpass-bandpass diplexing power divider is fabricated and measured in very good agreement with the predicted results. The measured frequency range of the lowpass channel is between 100 MHz and 2 GHz. The measured center frequencies of the bandpass channels are at 3.4 and 3.9 GHz with the 3-dB fractional bandwidths of 7 and 6.6%, respectively.

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Mr. Al Amin

Dr. Osman Bakacak

Dr. Seher Dilsiz

Dr. Alper Turkeli

Dr. Burak Mahmut Yanar

Dr. Ali Kursad Gorur