Invention Grant
US07657238B2 Method and apparatus for modulating a radio signal using digital amplitude and phase control signals
有权
使用数字幅度和相位控制信号调制无线电信号的方法和装置
- Patent Title: Method and apparatus for modulating a radio signal using digital amplitude and phase control signals
- Patent Title (中): 使用数字幅度和相位控制信号调制无线电信号的方法和装置
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Application No.: US10297847Application Date: 2001-06-13
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Publication No.: US07657238B2Publication Date: 2010-02-02
- Inventor: Robert Grange
- Applicant: Robert Grange
- Applicant Address: FI Espoo
- Assignee: Nokia Corporation
- Current Assignee: Nokia Corporation
- Current Assignee Address: FI Espoo
- Agency: Banner & Witcoff, Ltd.
- Priority: GB0014344.6 20000613
- International Application: PCT/EP01/07055 WO 20010613
- International Announcement: WO01/97479 WO 20011220
- Main IPC: H01Q11/12
- IPC: H01Q11/12 ; H04B1/04 ; H04K1/02 ; H04L25/03 ; H04L25/49 ; H04L27/12 ; H04L27/04 ; H03C3/00 ; H03K7/06
Abstract:
A transmitter for modulating an RF carrier signal with an input digital data stream is disclosed. The transmitter has a processor for generating digital phase and digital amplitude signals which characterise the input digital data stream, a signal generator for generating an RF carrier signal with a phase property defined by the generated digital phase signal, an amplifier arranged to receive the RF carrier signal as an input, and a bi-level switching circuit responsive to the generated digital amplitude signal to switch between the two levels to generate a voltage signal for supplying power to the amplifier.
Public/Granted literature
- US20040046607A1 Method and apparatus for modulating a radio signal using digital amplitude and phase control signals Public/Granted day:2004-03-11
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