Generalized high‐isolation n‐way Gysel power divider with arbitrary power ratio and different real terminated impedances

Abstract

An exact closed-form design approach for a generalized high-power n-way Gysel power divider is proposed. The power divider could be designed to achieve an arbitrary power ratio with the flexible multiway application, arbitrary real terminated impedance, excellent isolation, and easy fabrication through both planar and threedimensional structures. Moreover, this improved power divider could maintain high power processing capacity through the coaxial cavity transmission line and grounding resistances. The exact analytical solutions related to ideal port matching and high isolation are obtained based on the circuit and transmission-line theory.To verify the proposed approach, a compact 3-way coaxial power divider with a pre-designed power ratio of 1:1.5:2 and four different real terminated impedances of 50, 55, 60, and 65 Ω is designed and fabricated. Excellent agreement is achieved between the simulated and measured results. Measurements from 4.7 to 5.7 GHz show that the return losses of all input and output ports are better than 15 dB. The maximum insertion loss is 0.5 dB, and the phase imbalance is approximately less than 6.1 . In addition, the isolation between any two output ports is better than 23 dB from 4.5 to 6 GHz. Meanwhile, the power handling capability can reach the maximum power of the commercial 50 Ω SMA connectors (2.098 kW). K E Y W O R D Sarbitrary power division, arbitrary real terminated impedances, excellent isolation, generalized n-way Gysel power divider, high power

Compact three-way planar power divider with a simple structure

“…In recent years, there has been an increasing demand for low-cost, compact, and miniaturized power dividers for various microwave and mm-wave applications. For this purpose, Wilkinson-type [4] and Gysel-type dividers [5] are widely used. Generally, an n-way Wilkinson divider is nonplanar for n ≥ 3 because the 3D floating common node makes its planar implementation difficult.…”

Narrow-band power dividers with wide range tunable power-dividing ratio

“…In the mentioned PDs, it is not possible to consider any value of power-dividing ratio. To solve this problem, a Wilkinson and Gysel PDs with arbitrary power-dividing ratio are presented in 22 – 26 , respectively. In these PD type, the power division ratio can be adjusted arbitrarily during design process and before fabrication.…”

Design of seven‐way Bagley power divider with arbitrary output power ratio

“…Several approaches have been incorporated to design different power dividers with different specifications. [1][2][3][4][5][6][7] Wilkinson, 8 Gysel, [9][10][11] and Bagley power divider 12,13 are examples of such dividers that are widely used in RF circuits and microwave systems. Conventional equal-split Bagley power divider (BPD) which contains odd number of output ports has been presented in Reference 14.…”