Dual‐band Gysel power dividers with large frequency ratio and unequal power division

Abstract

In this article, a dual‐band Gysel power divider is proposed based on the topology of finite‐ground microstrip line. The general design method for the large frequency ratio and unequal power division is derived and the detailed design rules are provided. It is shown that the frequency ratio can be achieved from 1 to 10, and the power division ratio of each frequency band can be separately determined. Moreover, the phase differences at two operating bands could be designed to be either in‐phase or out‐of‐phase. Finally, two prototypes are designed, implemented, and experimented to validate this proposal. The measured results of the first design show the frequency ratio of 4 with power division ratios of 2:1 in both passband, while the second example is designed with the frequency ratio of 10 with power division ratios of 2:1 and 1:1 in the first and second passband, respectively. Both results show a good agreement between the simulated and measured results.

Design of dual-band Wilkinson power divider based on novel stubs using PSO algorithm

“…On the other hand, the Gysel structure is one way to design a PD. Despite their excellent isolation and high thermal conductivity, Gysel structures have large circuit dimensions that limit their applications and suffer from complex architectures [14][15][16].…”

A compact Gysel power divider with ultra‐wide rejection band and high fractional bandwidth

“…A compact filtering power divider with steppedimpedance resonators is presented in. 12 Also, in, 13,14 unlike conventional dual-band Gysel PDs, the power dividing ratios of presented circuits are determined by both electrical length and characteristic impedance of transmission lines (TLs). But one of their drawbacks is their undesired harmonics, which have not been suppressed.…”

A New Analytical Design Methodology for a Three-Section Wideband Wilkinson Power Divider

“…Power dividers are indispensable and ubiquitous components in radio-frequency (RF)/microwave systems [1,2]. For example, they are frequently used in antenna feeding networks, multistage and Doherty power amplifiers, mixers, and in RF/microwave measurements.…”