发明授权
US07248842B2 Wireless communication apparatus having a phase control loop shared by first and second modulation modes and an amplitude control loop
有权
具有通过第一和第二调制模式共享的相位控制环路和振幅控制环路的无线通信装置
- 专利标题： Wireless communication apparatus having a phase control loop shared by first and second modulation modes and an amplitude control loop
- 专利标题（中）： 具有通过第一和第二调制模式共享的相位控制环路和振幅控制环路的无线通信装置
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申请号： US11442263申请日： 2006-05-30
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公开(公告)号： US07248842B2公开(公告)日： 2007-07-24
- 发明人: Ryoichi Takano , Kazuhiko Hikasa , Yasuyuki Kimura , Hiroshi Hagisawa , Patrick Wurm , Robert Astle Henshaw , David Freeborough
- 申请人： Ryoichi Takano , Kazuhiko Hikasa , Yasuyuki Kimura , Hiroshi Hagisawa , Patrick Wurm , Robert Astle Henshaw , David Freeborough
- 申请人地址： JP Tokyo GB Royston
- 专利权人： Renesas Technology Corp.,Tipcom Limited
- 当前专利权人： Renesas Technology Corp.,Tipcom Limited
- 当前专利权人地址： JP Tokyo GB Royston
- 代理机构： Mattingly, Stanger, Malur & Brundidge, P.C.
- 优先权： GB0212729.8 20020531
- 主分类号： H04B1/02
- IPC分类号： H04B1/02
摘要：
A transmitter adopting a polar loop system including a phase control loop for controlling the phase of a carrier signal outputted from a transmitting oscillator and an amplitude control loop for controlling the amplitude of a transmitting output signal outputted from a power amplification circuit, and designed to be capable of performing transmission using a GMSK modulation mode and transmission using an 8-PSK modulation mode. In the transmitter, the phase control loop is shared as a phase control loop for use in the GMSK modulation mode and a phase control loop for use in the 8-PSK modulation mode. A component similar to any one of components constituting a loop filter is provided in parallel therewith so that the component can be connected or disconnected in accordance with the modulation mode, for example, by use of a switching element.