JPH0348938U - - Google Patents

Info

Publication number
JPH0348938U
JPH0348938U JP10811989U JP10811989U JPH0348938U JP H0348938 U JPH0348938 U JP H0348938U JP 10811989 U JP10811989 U JP 10811989U JP 10811989 U JP10811989 U JP 10811989U JP H0348938 U JPH0348938 U JP H0348938U
Authority
JP
Japan
Prior art keywords
frequency division
division ratio
band
output
frequency
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
JP10811989U
Other languages
Japanese (ja)
Other versions
JPH0628837Y2 (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 JP10811989U priority Critical patent/JPH0628837Y2/en
Publication of JPH0348938U publication Critical patent/JPH0348938U/ja
Application granted granted Critical
Publication of JPH0628837Y2 publication Critical patent/JPH0628837Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Circuits Of Receivers In General (AREA)

Description

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

第１図は本考案の一実施例を示す図、第２図は
そのフローチヤート、第３図は従来例を示す図で
ある。 １，２，３……ＶＣＯ、４……ゲート回路、５
……プログラマブル分周器、６……位相比較器、
７……基準周波数発振器、８……ローパスフイル
タ、９，９′……制御回路、１０……バンド切換
スイツチ、１１……ＲＡＭ、１２……ＲＯＭ。 FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a flowchart thereof, and FIG. 3 is a diagram showing a conventional example. 1, 2, 3...VCO, 4...gate circuit, 5
...Programmable frequency divider, 6...Phase comparator,
7... Reference frequency oscillator, 8... Low pass filter, 9, 9'... Control circuit, 10... Band selection switch, 11... RAM, 12... ROM.

Claims (1)

【実用新案登録請求の範囲】 (1) バンド毎に設けられた電圧制御発振器、こ
の電圧制御発振器からの出力を分周比Ｎで分周す
るプログラマブル分周器、このプログラマブル分
周器の分周出力と基準周波数発振器の発振出力と
を比較する位相比較器、この位相比較器からの出
力が供給され、前記電圧制御発振器へ制御電圧を
供給するローパスフイルタよりなる位相同期ルー
プにて局部発振回路が構成された多バンド受信機
であつて、バンド切換時、前記プログラマブル分
周器に仮の分周比データを一旦設定した後、正規
の分周比データを設定する制御回路を設けたこと
を特徴とする多バンド受信機。 (2) 前記仮の分周比データが、バンド切換操作
前の受信バンドにおける端周波数に関する分周比
データであることを特徴とする請求項１記載の多
バンド受信機。[Claims for Utility Model Registration] (1) A voltage controlled oscillator provided for each band, a programmable frequency divider that divides the output from this voltage controlled oscillator by a frequency division ratio N, and frequency division of this programmable frequency divider. A local oscillation circuit is operated by a phase-locked loop consisting of a phase comparator that compares the output with the oscillation output of the reference frequency oscillator, and a low-pass filter to which the output from this phase comparator is supplied and which supplies a control voltage to the voltage-controlled oscillator. The multi-band receiver is characterized by being provided with a control circuit that once sets temporary frequency division ratio data in the programmable frequency divider and then sets regular frequency division ratio data when switching bands. Multi-band receiver. (2) The multi-band receiver according to claim 1, wherein the temporary frequency division ratio data is frequency division ratio data regarding an edge frequency in a reception band before a band switching operation.
JP10811989U 1989-09-14 1989-09-14 Multi band receiver Expired - Fee Related JPH0628837Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10811989U JPH0628837Y2 (en) 1989-09-14 1989-09-14 Multi band receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10811989U JPH0628837Y2 (en) 1989-09-14 1989-09-14 Multi band receiver

Publications (2)

Publication Number Publication Date
JPH0348938U true JPH0348938U (en) 1991-05-13
JPH0628837Y2 JPH0628837Y2 (en) 1994-08-03

Family

ID=31656779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10811989U Expired - Fee Related JPH0628837Y2 (en) 1989-09-14 1989-09-14 Multi band receiver

Country Status (1)

Country Link
JP (1) JPH0628837Y2 (en)

Also Published As

Publication number Publication date
JPH0628837Y2 (en) 1994-08-03

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees