Design of a Compact Tri-Band Power Divider With Unequal Outputs

Abstract

Abstract-In this paper, we present a new design of a compact tri-band unequal power divider, which is composed of a circularcoupling power divider and a triple-band resonator. The unequal power dividing characteristic is realized by two circular shaped microstrip lines coupled through a circular shaped slot. The triple-band resonator, which comprises a conventional half-wavelength resonator, a short stub and an open stub, deals with the triple-bandpass performance. The proposed tri-band power divider with 1 : 1.6 output power ratios working at 3.4 GHz, 4.2 GHz, and 5.25 GHz is simulated and fabricated, and good agreements between the simulated and measured results are observed.

A Compact Tri-Band Impedance-Transforming Power Divider With Independent Controllable Power Division Ratios and Enhanced Bandwidths

“…If the voltage at the junction is V 0 , P 2i and P 3i can be expressed by (22) and (23), P 2i and P 3i refer to the power divided to two output paths, respectively. And the power…”

Generalized design of a versatile tri‐frequency Wilkinson power divider

“…The WPDs are planar three‐port devices that split power equally or unequally with a good isolation between its matched output ports. It is pertinent to say that design of dual‐band WPD architectures have been widely reported 17‐27 in literature, and the focus has now shifted towards the design of tri‐band WPDs 28‐35 . Recently, there has been focus on designing WPDs with size miniaturization 36‐38 and harmonic suppression 38‐40 .…”

“…However, it is limited in operation at the third frequency with the power division and isolation parameters deteriorating with increased frequency. An unequal split WPD was proposed in Reference 31 by incorporating a circular coupling power divider and a triple‐band resonator. The design ensures compactness and matching at three arbitrary frequencies of interest.…”