Design and fabrication of a miniaturized Gysel power divider using improved T‐shaped resonator

Abstract

AbstractA high‐performance Gysel power divider showcasing high suppression factor and low insertion loss at 540 MHz has been designed, investigated, and fabricated in this paper. The proposed Gysel power divider is made up of replacing six identical resonators with conventional transmission lines. The proposed resonators, which have been analyzed using LC equivalent circuit analysis, are designed to have a small size, low insertion loss, wide stopband, and narrow transition band. The final tested results have indicated that the suggested power divider is able to suppress nine harmonics; moreover, it has only an insertion loss of 0.4 dB. Another positive feature of the power divider is its small size in comparison with a conventional power divider at this operating frequency, where it occupies 34.5 × 63.8 mm2 equaling to 0.188 × 0.102 , where is the wavelength guide at 540 MHz. This figure is 25% of a conventional Gysel, considered as a remarkable point.