JPS63165914U - - Google Patents

Info

Publication number
JPS63165914U
JPS63165914U JP5910487U JP5910487U JPS63165914U JP S63165914 U JPS63165914 U JP S63165914U JP 5910487 U JP5910487 U JP 5910487U JP 5910487 U JP5910487 U JP 5910487U JP S63165914 U JPS63165914 U JP S63165914U
Authority
JP
Japan
Prior art keywords
modulation
circuit
pll
compensates
relating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5910487U
Other languages
Japanese (ja)
Other versions
JPH066597Y2 (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP5910487U priority Critical patent/JPH066597Y2/en
Publication of JPS63165914U publication Critical patent/JPS63165914U/ja
Application granted granted Critical
Publication of JPH066597Y2 publication Critical patent/JPH066597Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの考案の一実施例を示すブロツク図
、第2図は第1図の主要部の詳細を示す回路図、
第3図は従来のPLLを用いたFM変調回路を示
す回路図、第4図はこの考案に係る回路を用いた
場合の変調度と、従来回路を用いた場合の変調度
を示すグラフである。 図中、1……VCO回路、2……LPF回路、
3……バツフア回路、12……変調用可変リアク
タンス素子(変調用可変容量ダイオード)。
Fig. 1 is a block diagram showing an embodiment of this invention, Fig. 2 is a circuit diagram showing details of the main parts of Fig. 1,
Fig. 3 is a circuit diagram showing an FM modulation circuit using a conventional PLL, and Fig. 4 is a graph showing the modulation degree when using the circuit according to this invention and the modulation degree when using the conventional circuit. . In the figure, 1...VCO circuit, 2...LPF circuit,
3...Buffer circuit, 12...Variable reactance element for modulation (variable capacitance diode for modulation).

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] PLL回路を利用したFM変調回路に於いて、
変調用可変リアクタンス素子に対して発振周波数
に応じたバイアス電圧を、上記PLLの制御電圧
に関係させることによつて変調度の周波数変化を
補償したFM変調回路。
In an FM modulation circuit using a PLL circuit,
An FM modulation circuit that compensates for frequency changes in modulation degree by relating a bias voltage corresponding to an oscillation frequency to a modulation variable reactance element to a control voltage of the PLL.
JP5910487U 1987-04-17 1987-04-17 FM modulation circuit Expired - Lifetime JPH066597Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5910487U JPH066597Y2 (en) 1987-04-17 1987-04-17 FM modulation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5910487U JPH066597Y2 (en) 1987-04-17 1987-04-17 FM modulation circuit

Publications (2)

Publication Number Publication Date
JPS63165914U true JPS63165914U (en) 1988-10-28
JPH066597Y2 JPH066597Y2 (en) 1994-02-16

Family

ID=30890286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5910487U Expired - Lifetime JPH066597Y2 (en) 1987-04-17 1987-04-17 FM modulation circuit

Country Status (1)

Country Link
JP (1) JPH066597Y2 (en)

Also Published As

Publication number Publication date
JPH066597Y2 (en) 1994-02-16

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