A New Enhanced Design of broadband Gysel Power Divider and Combiner

Abstract

Power combiner/divider plays a vital role in many microwave applications, particularly, in radar systems and power amplifiers. The rush order for many applications and modern technologies in radio frequency systems to be low cost and more compact is enticing more awareness. In this paper, a new power divider/combiner is introduced as one device instead of using two devices by achieving equal return loss for input and outputs ports side by side with the insertion loss. The proposed design is developed by replacing the third half wavelength Transmission Line (TL) of the traditional Gysel Power Combiner/Divider (GPCD) by a microstrip Chebyshev bandpass filter with a center frequency of 1.5 GHz to widen the operating bandwidth. The robustness of the suggested design is elucidated by examining measurement and simulation results and comparing them with other state-of-the-art designs. The proposed GPCD design provides efficient operation in the L-band with equivalent fractional bandwidth of 69 % for all S-parameters. This demonstrates that the introduced GPCD design can be efficiently utilized in wideband and low-cost microwave applications.