发明申请
- 专利标题: MULTIBAND MATCHING CIRCUIT AND MULTIBAND POWER AMPLIFIER
- 专利标题(中): 多功能匹配电路和多功率放大器
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申请号: US12695442申请日: 2010-01-28
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公开(公告)号: US20100194487A1公开(公告)日: 2010-08-05
- 发明人: Atsushi FUKUDA , Hiroshi Okazaki , Shoichi Narahashi
- 申请人: Atsushi FUKUDA , Hiroshi Okazaki , Shoichi Narahashi
- 申请人地址: JP Chiyoda-ku
- 专利权人: NTT DoCoMo, Inc.
- 当前专利权人: NTT DoCoMo, Inc.
- 当前专利权人地址: JP Chiyoda-ku
- 优先权: JP2009-020581 20090130; JP2010-006885 20100115
- 主分类号: H03H7/38
- IPC分类号: H03H7/38
摘要:
A multiband matching circuit includes a first matching unit for converting an impedance in a signal path to Z0 in a first frequency band, and a second matching unit formed of a series matching section connected at one end in series with the first matching unit in the signal path, which is a transmission line whose characteristic impedance is equal to the matching impedance Z0 or a circuit equivalent to the transmission line at least in the first frequency band, and a parallel matching section connected at one end to the signal path at the other end of the series matching section and grounded at the other end. The parallel matching section is configured to open in impedance the connection point to the signal path in the first frequency band. The series matching section and the parallel matching section are designed to match an impedance in a second frequency band with Z0.
公开/授权文献
- US08487713B2 Multiband matching circuit and multiband power amplifier 公开/授权日:2013-07-16