Invention Grant
US08576948B2 Angle modulator, transmission device, and wireless communication device
有权
角度调制器,传输设备和无线通信设备
- Patent Title: Angle modulator, transmission device, and wireless communication device
- Patent Title (中): 角度调制器,传输设备和无线通信设备
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Application No.: US13256894Application Date: 2010-12-17
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Publication No.: US08576948B2Publication Date: 2013-11-05
- Inventor: Toru Matsuura , Kenji Miyanaga
- Applicant: Toru Matsuura , Kenji Miyanaga
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Dickinson Wright PLLC
- Priority: JP2010-009156 20100119
- International Application: PCT/JP2010/007337 WO 20101217
- International Announcement: WO2011/089675 WO 20110728
- Main IPC: H04B1/38
- IPC: H04B1/38 ; H04B7/00 ; H03C1/50 ; H03C3/02

Abstract:
Disclosed are an angle modulator, a transmission apparatus, and a radio communication apparatus that can compensate phase discontinuity when an operational mode of a voltage controlled oscillator is switched. Angle modulator (100) includes phase difference detection section (150) that detects a difference of phases between an input signal of subtractor (141) and an angle modulated signal, using the result of subtraction by subtractor (141) of frequency locked loop circuit (140); correction control section (160) that generates a control signal for compensating that difference of phases based on that difference of phases; correction section (120) that corrects the phase of the angle modulated signal by adding the control signal to an input signal of angle modulator (100), an input signal of loop filter (142), or an input signal of VCO (143) during a predetermined period after VCO (143) switches the operational mode (from time t3 to time t4).
Public/Granted literature
- US20120020390A1 ANGLE MODULATOR, TRANSMISSION DEVICE, AND WIRELESS COMMUNICATION DEVICE Public/Granted day:2012-01-26
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