JPH01160738U - - Google Patents

Info

Publication number
JPH01160738U
JPH01160738U JP5822188U JP5822188U JPH01160738U JP H01160738 U JPH01160738 U JP H01160738U JP 5822188 U JP5822188 U JP 5822188U JP 5822188 U JP5822188 U JP 5822188U JP H01160738 U JPH01160738 U JP H01160738U
Authority
JP
Japan
Prior art keywords
frequency
circuit
signal
broadcast receiving
receiving device
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.)
Pending
Application number
JP5822188U
Other languages
Japanese (ja)
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 JP5822188U priority Critical patent/JPH01160738U/ja
Publication of JPH01160738U publication Critical patent/JPH01160738U/ja
Pending legal-status Critical Current

Links

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  • Noise Elimination (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Description

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

第１図は本考案一実施例の電気回路のブロツク
図、第２図は従来のＡＭラジオの電気回路のブロ
ツク図である。 ８：周波数変換器、９：中間周波数増幅器、１
０：検波器、１１：中間周波数ろ波器、１２：シ
ンセサイザーコントローラー、１３：可変容量ダ
イオード、１４：局部発振器、２０：トラツプ回
路、２１：中間周波数トラツプ、２２：イメージ
周波数トラツプ、２３：コイル、２４：コンデン
サ、２５：可変容量ダイオード。 FIG. 1 is a block diagram of an electric circuit according to an embodiment of the present invention, and FIG. 2 is a block diagram of an electric circuit of a conventional AM radio. 8: Frequency converter, 9: Intermediate frequency amplifier, 1
0: Detector, 11: Intermediate frequency filter, 12: Synthesizer controller, 13: Variable capacitance diode, 14: Local oscillator, 20: Trap circuit, 21: Intermediate frequency trap, 22: Image frequency trap, 23: Coil, 24: Capacitor, 25: Variable capacitance diode.

Claims (1)

【実用新案登録請求の範囲】 (1) アンテナから送られてきた高周波信号を周
波数変換器で周波数変換し、その周波数変換され
た信号を検波器で検波して出力する放送受信装置
において、周波数変換器の前にイメージ周波数信
号を除去するトラツプ回路を接続して同調回路を
省略し、前記周波数変換器で周波数変換された信
号を、中間周波数をろ波する中間周波数ろ波器を
通して検波器へ送ることを特徴とする放送受信装
置。 (2) 前記トラツプ回路中のイメージ周波数信号
を除去する回路を、それぞれトラツプする周波数
をわずか変えた２回路によつて構成させた請求項
１の放送受信装置。 (3) 前記イメージ周波数信号を除去する回路を
コイルと容量との直列回路とするとともに、前記
容量を固定容量と、可変容量とに分離させた請求
項１又は２の放送受信装置。 (4) 前記トラツプ回路をイメージ周波数信号と
中間周波数信号とを除去する回路とした請求項１
，２又は３の放送受信装置。[Scope of Claim for Utility Model Registration] (1) A broadcast receiving device that converts the frequency of a high-frequency signal sent from an antenna using a frequency converter, detects the frequency-converted signal using a detector, and outputs the frequency-converted signal. A trap circuit for removing the image frequency signal is connected in front of the detector to omit the tuning circuit, and the signal frequency-converted by the frequency converter is sent to the detector through an intermediate frequency filter that filters the intermediate frequency. A broadcast receiving device characterized by: (2) The broadcast receiving apparatus according to claim 1, wherein the circuit for removing the image frequency signal in the trap circuit is constituted by two circuits each having a slightly different trapping frequency. (3) The broadcast receiving device according to claim 1 or 2, wherein the circuit for removing the image frequency signal is a series circuit of a coil and a capacitor, and the capacitor is separated into a fixed capacitor and a variable capacitor. (4) Claim 1, wherein the trap circuit is a circuit that removes an image frequency signal and an intermediate frequency signal.
, 2 or 3 broadcast receiving device.
JP5822188U 1988-04-28 1988-04-28 Pending JPH01160738U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5822188U JPH01160738U (en) 1988-04-28 1988-04-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5822188U JPH01160738U (en) 1988-04-28 1988-04-28

Publications (1)

Publication Number Publication Date
JPH01160738U true JPH01160738U (en) 1989-11-08

Family

ID=31284045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5822188U Pending JPH01160738U (en) 1988-04-28 1988-04-28

Country Status (1)

Country Link
JP (1) JPH01160738U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0548441U (en) * 1991-10-07 1993-06-25 アルプス電気株式会社 Satellite broadcasting tuner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5254970U (en) * 1975-10-20 1977-04-20
JPS5939551B2 (en) * 1976-11-22 1984-09-25 三菱化学株式会社 Dyeing method for synthetic fibers
JPS6137639B2 (en) * 1978-02-10 1986-08-25 Nippon Musical Instruments Mfg

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5254970U (en) * 1975-10-20 1977-04-20
JPS5939551B2 (en) * 1976-11-22 1984-09-25 三菱化学株式会社 Dyeing method for synthetic fibers
JPS6137639B2 (en) * 1978-02-10 1986-08-25 Nippon Musical Instruments Mfg

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0548441U (en) * 1991-10-07 1993-06-25 アルプス電気株式会社 Satellite broadcasting tuner

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