发明申请
- 专利标题: Amplifier
- 专利标题(中): 放大器
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申请号: US10593720申请日: 2005-03-24
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公开(公告)号: US20070164819A1公开(公告)日: 2007-07-19
- 发明人: Junetsu Urata , Naoki Onishi , Masaki Suto , Hironori Yokoyama
- 申请人: Junetsu Urata , Naoki Onishi , Masaki Suto , Hironori Yokoyama
- 优先权: JP2004-090892 20040326; JP2004-090843 20040326
- 国际申请: PCT/JP05/06210 WO 20050324
- 主分类号: H03F3/68
- IPC分类号: H03F3/68
摘要:
With an amplifier configured by including Doherty-type amplifier sections 21 to 25, the area of the circuits is reduced so that the size reduction is achieved. Moreover, the properties of the Doherty-type amplifier sections (Doherty properties) are stabilized against any environmental change of humidity and temperature. As an example, the permittivity of a substrate 3 configuring one or more of quarter wavelength lines 23 and/or 24 included in the Doherty-type amplifier sections 21 to 25 is increased compared with the permittivity of a substrate 2 in a close range. As another example, a line portion forming an output circuit of a carrier amplifier in the Doherty-type amplifier sections is configured by using a substrate material being physically stable against either or both of any change observed in the humidity and the temperature.
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