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Patent Searching and Data


Title:
UNEQUAL POWER DIVIDER INTEGRATED WITH BANDPASS FILTER FUNCTION
Document Type and Number:
WIPO Patent Application WO/2014/029182
Kind Code:
A1
Abstract:
Disclosed is an unequal power divider integrated with a bandpass filter function, comprising: an upper-layer microstrip structure, an isolation element, a middle-layer dielectric substrate and a lower-layer grounding metal plate. Each unequal power divider integrated with a bandpass filter function comprises two single-frequency bandpass filter circuits and an isolation element connected between the two single-frequency bandpass filter circuits. The input impedance and the output impedance of the unequal power divider are the same, and the input and output impedance of each of the single-frequency bandpass filter circuit can be adjusted by changing the coupling intensity between resonators and a port location, so as to conduct power distribution of different ratios and achieve matching. The present invention can omit a quarter-wavelength impedance transforming section required by a traditional unequal Wilkinson power divider at an output port, thereby effectively reducing the dimensions. The present invention can be used in various types of radio-frequency front-end systems, and has the functions of power distribution and frequency selection at the same time, thereby being beneficial to the integration and miniaturization of a device.

Inventors:
ZHANG XIUYIN (CN)
WANG KAIXU (CN)
YU FENGLIN (CN)
LI CONG (CN)
HU BINJIE (CN)
Application Number:
PCT/CN2012/086904
Publication Date:
February 27, 2014
Filing Date:
December 19, 2012
Export Citation:
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Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
H01P5/16
Foreign References:
CN102403563A2012-04-04
CN202308258U2012-07-04
EP2337145A12011-06-22
US20110140804A12011-06-16
US20080068113A12008-03-20
Attorney, Agent or Firm:
YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY (CN)
广州粤高专利商标代理有限公司 (CN)
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