الفهرس 
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Abstract
Advanced technologies play a crucial part in the rapid growth of communication systems. Power combiner/divider plays a vital role in many microwave applications, particularly radar systems and power amplifiers. The need for compact and low-cost devices in radio frequency systems lends further support for extensive research in this field. In this work, a new power divider/combiner is introduced as one device instead of two devices, achieving equal return loss for input and output ports side by side with the insertion loss. The proposed design is developed by replacing the third half wavelength transmission line of the traditional Gysel power combiner/divider with microstrip Chebyshev band pass 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 techniques. The proposed design provides efficient operation in the L-band with an equivalent fractional bandwidth of 69 % for all S-parameters. It demonstrates that the introduced design can be efficiently utilized in wideband and low-cost microwave applications. The suggested design provides an equal output and input return loss bandwidth for the same frequency band. The performance of the proposed design is assessed by investigating various parameters, including insertion loss, return loss, and isolation between input ports across the L-band. The introduced structure is fabricated and tested, and the experimental measurements agree with the simulation results. The proposed design is compared with existing state-of-the-art devices, revealing its great performance