Diplexing Filtering Power Divider with a Lowpass and Dual-Band Bandpass Response
Progress in Electromagnetics Research C, cilt.169, ss.179-184, 2026 (Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 169
- Basım Tarihi: 2026
- Doi Numarası: 10.2528/pierc25091804
- Dergi Adı: Progress in Electromagnetics Research C
- Derginin Tarandığı İndeksler: Scopus, Compendex
- Sayfa Sayıları: ss.179-184
- Kocaeli Üniversitesi Adresli: Evet
Özet
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 codirectional 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.