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Mousavi, Seyed Mohammad Hadi, Rahimi, Marzieh Salar, Malakooti, Seyed-Ali, Afzali, Behnam and Virdee, Bal Singh (2016) A Broadband Out-of-Phase Gysel Power Divider Based on a Dual-Band Circuit With a Single Fixed Isolation Resistor. Int. Journal of RF and Microwave Computer-Aided Engineering, 26 (9). pp. 796-802.
Based on the double-sided parallel-strip lines with an inserted conductor as a virtual ground, a high power divider with dual-band/broadband response and frequencyindependent 180 degree phase difference between the output ports is implemented in this paper. The circuit topology employs a single commercially available external isolation resistor as well as moderate line impedances (15–100 ohm), making it suitable for high-power applications. Precise closed-form design equations on the basis of even- and odd-mode analysis are derived. In addition to the wide range of frequency band ratios from 1 to 2.65, broadband response is also obtained by selecting the proper value of frequency band ratios. To substantiate the design equations and theory, a circuit with 2:1 frequency ratio and 84.5% bandwidth referring to 16 dB isolation and 12 dB return loss values is developed. To the authors’ knowledge, this is the widest bandwidth reported for out-of-phase high power dividers.
Available under License Creative Commons Attribution Non-commercial No Derivatives.
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