Open AccessEight‐way radial power splitter including ring‐shape isolation network
Author(s) -
Yu T.,
Lin B.S.,
Chang Y.
Publication year - 2017
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2017.3486
Subject(s) - splitter , bandwidth (computing) , power (physics) , printed circuit board , isolation (microbiology) , impedance matching , computer science , electrical impedance , electronic engineering , optics , electrical engineering , engineering , telecommunications , physics , microbiology and biotechnology , quantum mechanics , biology
A radial power splitter is used to distribute signal power to the following stages locating radially around all directions. A well‐known disadvantage of a radial power splitter implemented on a planar circuit board is the poor performance in output matching and output port isolation. An eight‐way radial power splitter including the proposed ring‐shape isolation network is presented. The ring‐shape isolation network, comprising several series high‐impedance lines and capacitors, plays the crucial role of significantly improving output matching and isolation of the eight‐way power splitter. The background principle and design of the ring‐shape isolation network are described. An eight‐way radial power splitter is designed, simulated and fabricated on a printed circuit board. The measurement results, decently matching the simulations, show the input and output reflection coefficients as low as –20 dB at 1 GHz. The measured output isolation coefficients are below –20 dB at 0.7–1.14 GHz between any two output ports, exhibiting the widest isolation bandwidth among the reported radial power splitters.