发明授权
US4339726A Demodulator of angle modulated signal operable by low power voltage
失效
角度调制信号的解调器可由低功率电压工作
- 专利标题: Demodulator of angle modulated signal operable by low power voltage
- 专利标题(中): 角度调制信号的解调器可由低功率电压工作
-
申请号: US181930申请日: 1980-08-27
-
公开(公告)号: US4339726A公开(公告)日: 1982-07-13
- 发明人: Masami Miura
- 申请人: Masami Miura
- 申请人地址: JPX Tokyo
- 专利权人: Nippon Electric Co., Ltd.
- 当前专利权人: Nippon Electric Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX54-110570 19790829; JPX54-110571 19790829
- 主分类号: H03D3/20
- IPC分类号: H03D3/20 ; H03D13/00 ; H03D3/22
摘要:
A demodulator for an angle modulated signal consists of circuitry particularly adaptable to integrated circuit construction. The various circuit functional groups are adapted to be connected in parallel, rather than serially, across the power source, thereby enabling good performance in systems having low voltage power sources. The angle modulated signal is converted into first and second signals of opposite phase. Also, the angle modulated signal is phase shifted an amount dependent upon the frequency deviation from a center frequency, the first and phase shifted signals are applied to a first OR circuit which provides the largest input signal as its output. The second and phase shifted signals are applied to a second OR circuit which provides the largest input signal as its output. The two OR circuit outputs are low-pass filtered and subtracted to provide the demodulated output.
公开/授权文献
- US6008603A Brushless DC motor assembly control circuit 公开/授权日:1999-12-28
信息查询
IPC分类: