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51. 发明专利

JPH04207209A QUADRATURE DETECTOR 失效
公开(公告)号：JPH04207209A
公开(公告)日：1992-07-29
申请号：JP33246090
申请日：1990-11-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IKEDA MASAHARU
IPC分类号： H03D3/06 , H03D3/18
摘要： PURPOSE:To prevent appearance of the variance of the amplitude of a frequency modulated signal in a demodulation output by connecting two current dividing means, which are driven by the same signal, to respective outputs of two coupling means. CONSTITUTION:When intensities of angle modulation of frequency modulators 27 and 28 are changed, balance amplitude limited outputs of first and second coupling means D and E are changed in accordance with this change. The output of the means D is inputted to first and second current dividing means P and G. The output of the means E is inputted to third and fourth current dividing means H and I. The output current of the means H is inputted to a phase shift input terminal 6 of a phase shift means 2. The phase of a phase shift output terminal 7 of the means 2 is changed in proportion to the intensity of frequency modulation of the signal supplied to the terminal 6. Consequently, the signal of the terminal 7 is inputted to the control inputs of means F and G, and balanced demodulation output currents proportional to intensities of frequency modulation of signal sources 17 and 28 are obtained in the outputs of means F and G, and the demodulated signal voltage is obtained in a demodulation output terminal 10.

52. 实用新型

JPS6334336Y2 失效
公开(公告)号：JPS6334336Y2
公开(公告)日：1988-09-12
申请号：JP16354382
申请日：1982-10-28
IPC分类号： H03D1/22 , H03D3/00 , H03D3/18

53. 发明专利

JPS6135016A Fm detection circuit 失效
标题翻译： FM检测电路
公开(公告)号：JPS6135016A
公开(公告)日：1986-02-19
申请号：JP14909985
申请日：1985-07-05
申请人： Yokogawa Hewlett Packard Ltd
发明人： JIYON ENU DEYUUKUSU , RICHIYAADO EI BAUMUGAATONA , TOOMASU EI SHIYUUPU
IPC分类号： H03K9/00 , H03D3/02 , H03D3/18 , H03K5/04 , H03K9/06
CPC分类号： H03D3/02
摘要： PURPOSE: To improve detection performance and to simplify constitution by forming a signal whose duty cycle is changed in response to a phase difference between an FM signal and its delay signal.
CONSTITUTION: A limit FM signal 280 is fed to a delay circuit 282 comprising inverters of cascade connection, a phase shift of (2n+1)×90° is executed in a frequency of a carrier, its output 283 and the signal 280 are supplied to an LPF286 via an XOR gate 284 and an analog signal 288 is led out. An output signal 285 of the gate 284 has a duty cycle changed according to the relative phase between two input signals. The carrier is eliminated from the pulse width modulation signal and a demodulated analog signal is obtained.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过形成其占空比响应于FM信号与其延迟信号之间的相位差而改变的信号来提高检测性能并简化结构。构成：极限FM信号280被馈送到包括级联连接的反相器，（2n + 1）×90度的相移的延迟电路282。以载波的频率执行，其输出283和信号280经由异或门284提供给LPF286，并且模拟信号288被引出。门284的输出信号285具有根据两个输入信号之间的相对相位而改变的占空比。从脉宽调制信号中消除载波，得到解调的模拟信号。

54. 发明专利

JPS59191906A Phase detecting circuit 失效
标题翻译：相检测电路
公开(公告)号：JPS59191906A
公开(公告)日：1984-10-31
申请号：JP6551583
申请日：1983-04-15
申请人： Hitachi Ltd
发明人： FUNADA ETSUO , INOUE FUMIO
IPC分类号： H03D3/18 , H03D13/00
CPC分类号： H03D13/008 , H03D2200/0009
摘要： PURPOSE:To obtain a phase detecting circuit which increases extremely only the phase detection gain when the signal of a specific phase relation is supplied, by feeding the output voltage of one side of the phase detecting circuit back to a current source circuit after smoothing the output voltage and controlling the current value of said current source circuit. CONSTITUTION:The voltage of an output terminal 13 rises up when the signal having a certain phase difference is supplied to input terminals 14 and 15 respectively. Under such conditions, the voltage of an output terminal 12 drops. Then the voltage of a voltage source 33 is compared with the voltage of the terminal 12 by a feedback circuit consisting of transistors (TR) 28-31. Thus the collector current of a TR7 is reduced, and therefore the mutual conductance between TRs 5 and 6 is reduced. As a result, the phase detection gain is lowered. On the contrary, the voltage of the terminal 12 rises up when the signal having a phase relation in the direction where the voltage of the terminal 13 is reduced. Thus the collector current of the TR7 is increased to increase the mutual conductance between the TRs 5 and 6. Thus, the phase detection gain is increased.
摘要翻译：目的：为了获得在提供特定相位关系的信号时极大地增加相位检测增益的相位检测电路，通过在平滑输出之后将相位检测电路的一侧的输出电压馈送回电流源电路电压并控制所述电流源电路的电流值。构成：当具有一定相位差的信号分别提供给输入端子14和15时，输出端子13的电压上升。在这种条件下，输出端子12的电压下降。然后通过由晶体管（TR）28-31组成的反馈电路将电压源33的电压与端子12的电压进行比较。因此，TR7的集电极电流减小，因此TR 5和6之间的互导性降低。结果，相位检测增益降低。相反，当端子13的电压减小的方向上具有相位关系的信号时，端子12的电压上升。因此，TR7的集电极电流增加以增加TR5和6之间的互导。因此，相位检测增益增加。

55. 发明专利

JPS59158606A Radio receiver for fm signal 失效
标题翻译：无线电收音机FM信号
公开(公告)号：JPS59158606A
公开(公告)日：1984-09-08
申请号：JP3331783
申请日：1983-02-28
申请人： Nec Corp
发明人： YOSHIZAWA SHIGEO , UMETSU SHINJIROU
IPC分类号： H04B1/06 , H03D3/00 , H03D3/18
CPC分类号： H03D3/007
摘要： PURPOSE:To attain the titled receiver suitable for miniaturization and circuit integration by using a local oscillator oscillated at a frequency the same as a line frequency so as to detect the in-phase and orthogonal components of a receiving signal thereby applying delay detection to the signal components. CONSTITUTION:A signal received on an antenna 1 is branched and inputted to phase detectors 2, 3. On the other hand, one output of the local oscillator 4 oscillated at the same frequency as the line frequency is inputted to the phase detector 3, where the in-phase component as that of the oscillated output from the receiving signal is detected. The other output of the local oscillator 4 is inputted to the phase detector 2 via a 90 deg. phase shifter 5, where the orthogonal component is detected. An output of LPFs 6, 7 is fed respectively to ALC amplifiers 8 and 9, and the amplifiers 8 and 9 make respective output voltages A, B constant independent of an input electric field. The output B of the amplifier 9 is delayed by a delay circuit 10 and the output of the delay circuit 10 is multiplied with the output A by a multiplication circuit 11. Further, an output D of the multiplication circuit 11 is outputted to an output terminal 13 via an LPF12.
摘要翻译：目的：通过使用以与线路频率相同的频率振荡的本地振荡器来获得适合于小型化和电路集成的标准接收机，以便检测接收信号的同相和正交分量，从而对信号进行延迟检测组件。构成：在天线1上接收的信号被分支并输入到相位检测器2,3中。另一方面，本地振荡器4的一个输出以与线频率被输入到相位检测器3相同的频率振荡，其中检测与接收信号的振荡输出的同相分量。本地振荡器4的另一输出经90度输入到相位检测器2。移相器5，其中检测到正交分量。 LPF6,7的输出分别馈送到ALC放大器8和9，并且放大器8和9使得相应的输出电压A，B恒定，与输入电场无关。放大器9的输出B被延迟电路10延迟，延迟电路10的输出由乘法电路11与输出A相乘。此外，乘法电路11的输出D输出到输出端 13通过LPF12。

56. 发明专利

JPS597253B2 JPS597253B2 - 失效
公开(公告)号：JPS597253B2
公开(公告)日：1984-02-17
申请号：JP4254476
申请日：1976-04-16
申请人： Nippon Telegraph & Telephone
发明人： SUZUKI YUTAKA , JUKI KANKO
IPC分类号： H04L27/34 , H03D1/22 , H03D3/00 , H03D3/18 , H03D5/00 , H04L27/227

57. 发明专利

JPS5753672B2 失效
公开(公告)号：JPS5753672B2
公开(公告)日：1982-11-13
申请号：JP4146374
申请日：1974-04-10
IPC分类号： H03F3/343 , G06G7/16 , H01L21/331 , H01L21/8222 , H01L27/06 , H01L29/00 , H01L29/73 , H03D1/22 , H03D3/18 , H03F3/34 , H03F3/347 , H03F3/45 , H03G3/10 , H03G3/30

58. 发明专利

JPS57152708A FM DEMODULATOR 失效
公开(公告)号：JPS57152708A
公开(公告)日：1982-09-21
申请号：JP2292982
申请日：1982-02-17
申请人： PHILIPS NV
发明人： KURISUTOFUAA BURAIAN MAASHIYAR
IPC分类号： H03D3/18 , H03D3/00 , H03D3/22 , H03D7/16

59. 实用新型

JPS57140404U 失效
公开(公告)号：JPS57140404U
公开(公告)日：1982-09-02
申请号：JP2334381
申请日：1981-02-23
IPC分类号： H03D3/18 , G05B11/06 , G05D3/12 , H02M7/21

60. 发明专利

JPS5645521B2 失效
公开(公告)号：JPS5645521B2
公开(公告)日：1981-10-27
申请号：JP14741776
申请日：1976-12-07
IPC分类号： H03K12/00 , H03D3/00 , H03D3/18 , H03K5/00

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