Title:
BALUN AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
WIPO Patent Application WO/2020/014891
Kind Code:
A1
Abstract:
A balun and a method for manufacturing the same are disclosed. According to an embodiment, the balun comprises a substrate, and a first and a second coplanar waveguide (CPW) couplers which are disposed on the substrate and cascaded with each other. Each CPW coupler comprises two first ground planes disposed on a first side of the substrate, a first microstrip line and at least two second microstrip lines which are disposed on the first side of the substrate between the two first ground planes, and at least one third microstrip line that is disposed on an opposite side of the substrate. The first microstrip line and the at least two second microstrip lines can be coupled with each other by electromagnetic coupling. The at least one third microstrip line electrically connects the at least two second microstrip lines with each other by via-holes.
Inventors:
WANG ZHANCANG (CN)
HE CHEN (CN)
HE CHEN (CN)
Application Number:
PCT/CN2018/096132
Publication Date:
January 23, 2020
Filing Date:
July 18, 2018
Export Citation:
Assignee:
ERICSSON TELEFON AB L M (SE)
WANG ZHANCANG (CN)
WANG ZHANCANG (CN)
International Classes:
H01P5/10
Foreign References:
| CN105990630A | 2016-10-05 | |||
| US7302249B1 | 2007-11-27 | |||
| CN104022322A | 2014-09-03 | |||
| US8547186B2 | 2013-10-01 | |||
| US7605672B2 | 2009-10-20 |
Other References:
GREG MILLER, BALUN - GENESYS 2008.07 - KEYSIGHT KNOWLEDGE CENTER, 2 June 2008 (2008-06-02)
JUI-CHIEH CHIU: "A 3-dB Quadrature Coupler Suitable for PCB Circuit Design", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 54, no. 9, September 2006 (2006-09-01), pages 3521 - 3525, XP001545229, DOI: 10.1109/TMTT.2006.879772
See also references of EP 3824508A4
JUI-CHIEH CHIU: "A 3-dB Quadrature Coupler Suitable for PCB Circuit Design", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 54, no. 9, September 2006 (2006-09-01), pages 3521 - 3525, XP001545229, DOI: 10.1109/TMTT.2006.879772
See also references of EP 3824508A4
Attorney, Agent or Firm:
ZHONGZI LAW OFFICE (CN)
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