A Broadband Out-of-Phase Gysel Power Divider Based on a Dual-Band Circuit With a Single Fixed Isolation Resistor

作者：Mousavi Seyed Mohammad Hadi^*; Rahimi Marzieh Salar; Malakooti Seyed Ali; Afzali Behnam; Virdee Bal Singh

来源：International Journal of RF and Microwave Computer-Aided Engineering, 2016, 26(9): 796-802.

DOI：10.1002/mmce.21031

• out-of-phase power divider
• even and odd mode analysis
• broadband power divider
• double-sided parallel-strip line with inserted conductor

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 1808 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.

• 出版日期2016-11