JPS6420733A - Radio receiver - Google Patents

Radio receiver

Info

Publication number
JPS6420733A
JPS6420733A JP17775887A JP17775887A JPS6420733A JP S6420733 A JPS6420733 A JP S6420733A JP 17775887 A JP17775887 A JP 17775887A JP 17775887 A JP17775887 A JP 17775887A JP S6420733 A JPS6420733 A JP S6420733A
Authority
JP
Japan
Prior art keywords
frequency
beat
cpu
switch
local oscillator
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
JP17775887A
Other languages
Japanese (ja)
Other versions
JPH0710051B2 (en
Inventor
Yoshiteru Hashimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yaesu Musen Co Ltd
Original Assignee
Yaesu Musen Co Ltd
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 by Yaesu Musen Co Ltd filed Critical Yaesu Musen Co Ltd
Priority to JP17775887A priority Critical patent/JPH0710051B2/en
Publication of JPS6420733A publication Critical patent/JPS6420733A/en
Publication of JPH0710051B2 publication Critical patent/JPH0710051B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Noise Elimination (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To eliminate beat interference completely by using a CPU so as to control the relation of frequency causing cross spurious beat disturbance of a reception frequency and mutual relation of the local oscillated frequency and the carrier oscillation frequency thereby switching the result by a switch or the like. CONSTITUTION:In receiving a frequency causing cross spurious beat in a multiple conversion system superheterodyne receiver, the oscillated frequency of the 1st local oscillator 3 is controlled by a CPU 13 by using a PLL 14, a switch 12 in interlocking with the CPU 13 is changed over to allow the selection of higher and lower frequency with respect to the intermediate frequency and the oscillation frequency of the 2nd local oscillator 6. Thus, the beat disturbance to the multi-conversion superheterodyne receiver in the specific beat is eliminated completely.
JP17775887A 1987-07-16 1987-07-16 Wireless receiver Expired - Fee Related JPH0710051B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17775887A JPH0710051B2 (en) 1987-07-16 1987-07-16 Wireless receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17775887A JPH0710051B2 (en) 1987-07-16 1987-07-16 Wireless receiver

Publications (2)

Publication Number Publication Date
JPS6420733A true JPS6420733A (en) 1989-01-24
JPH0710051B2 JPH0710051B2 (en) 1995-02-01

Family

ID=16036613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17775887A Expired - Fee Related JPH0710051B2 (en) 1987-07-16 1987-07-16 Wireless receiver

Country Status (1)

Country Link
JP (1) JPH0710051B2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05129843A (en) * 1991-10-31 1993-05-25 Dx Antenna Co Ltd Retransmitting single channel signal processor
JPH0746150A (en) * 1993-07-31 1995-02-14 Nec Corp Radio selective calling receiver
US5483297A (en) * 1993-08-20 1996-01-09 Samsung Electronics Co., Ltd. Sound carrier detecting circuit
EP0962046A4 (en) * 1997-01-31 1999-12-22
EP1014576A3 (en) * 1998-12-14 2003-01-29 Deutsche Thomson-Brandt Gmbh Method for driving a receiver stage and respective apparatus
WO2003096535A1 (en) * 2002-05-11 2003-11-20 Cedardell Limited Method and radio frequency receiver apparatus for processes radio frequency signals
GB2402564A (en) * 2003-06-07 2004-12-08 Zarlink Semiconductor Ltd Multiple conversion tuner with reduced spuriae
JP2009194907A (en) * 2008-02-15 2009-08-27 Tektronix Inc Spurious avoidance method and receiver
JP2022053942A (en) * 2020-09-25 2022-04-06 アンリツ株式会社 Signal analysis apparatus and signal analysis method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05129843A (en) * 1991-10-31 1993-05-25 Dx Antenna Co Ltd Retransmitting single channel signal processor
JPH0746150A (en) * 1993-07-31 1995-02-14 Nec Corp Radio selective calling receiver
US5483297A (en) * 1993-08-20 1996-01-09 Samsung Electronics Co., Ltd. Sound carrier detecting circuit
EP0962046A4 (en) * 1997-01-31 1999-12-22
EP1014576A3 (en) * 1998-12-14 2003-01-29 Deutsche Thomson-Brandt Gmbh Method for driving a receiver stage and respective apparatus
US7164896B2 (en) 1998-12-14 2007-01-16 Thomson Licensing Method for driving a receiver stage and respective apparatus
WO2003096535A1 (en) * 2002-05-11 2003-11-20 Cedardell Limited Method and radio frequency receiver apparatus for processes radio frequency signals
GB2402564A (en) * 2003-06-07 2004-12-08 Zarlink Semiconductor Ltd Multiple conversion tuner with reduced spuriae
GB2402564B (en) * 2003-06-07 2006-04-05 Zarlink Semiconductor Ltd Multiple conversion tuner
JP2009194907A (en) * 2008-02-15 2009-08-27 Tektronix Inc Spurious avoidance method and receiver
JP2022053942A (en) * 2020-09-25 2022-04-06 アンリツ株式会社 Signal analysis apparatus and signal analysis method

Also Published As

Publication number Publication date
JPH0710051B2 (en) 1995-02-01

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Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees