|Table of Contents|

Design of equal-split power divider with arbitrary port impedances based on admittance matrix

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2014年06期
Page:
715-
Research Field:
Publishing date:

Info

Title:
Design of equal-split power divider with arbitrary port impedances based on admittance matrix
Author(s):
Miao ChenZheng XuezhengWu Wen
School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China
Keywords:
admittance matrix port impedances equal-split power dividers impedance matching isolation
PACS:
TN713
DOI:
-
Abstract:
To decrease the circuit size of non-fifty Ω port impedances power dividers,equal-split power dividers with arbitrary port impedances are studied.It is theoretically verified that if two output ports of an equal-split power divider are connected by a resistor,the impedance matching of arbitrary ports and output port isolation cannot be realized simultaneously.A new circuit topology of equal-split power divider with arbitrary port impedances is proposed.Different microstrip lines are added in series with the isolation resistor at both ends; short/open stubs are loaded at each port.Impedance matching and output port isolation can be achieved simultaneously by adopting this configuration.The closed design formulae of this equal-split power divider with arbitrary port impedances are derived using an admittance matrix.As an example,an equal-split power divider is designed with 30 Ω,53 Ω,47 Ω port impedances and operating at 1 GHz.The circuit size designed by the method proposed here decreases by about 66% compared with that of the traditional design method.Experimental results demonstrate the simplicity and effectiveness of the proposed circuit topology of equal-split power divider with arbitrary port impedances.

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Last Update: 2014-12-31