JPS60176353A - 受信周波数補正方式 - Google Patents

受信周波数補正方式

Info

Publication number
JPS60176353A
JPS60176353A JP3041484A JP3041484A JPS60176353A JP S60176353 A JPS60176353 A JP S60176353A JP 3041484 A JP3041484 A JP 3041484A JP 3041484 A JP3041484 A JP 3041484A JP S60176353 A JPS60176353 A JP S60176353A
Authority
JP
Japan
Prior art keywords
output
lower limits
range
discriminator
operational amplifier
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
JP3041484A
Other languages
English (en)
Japanese (ja)
Other versions
JPH051662B2 (enrdf_load_stackoverflow
Inventor
Seizo Nakamura
精三 中村
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP3041484A priority Critical patent/JPS60176353A/ja
Publication of JPS60176353A publication Critical patent/JPS60176353A/ja
Publication of JPH051662B2 publication Critical patent/JPH051662B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/10Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/16Frequency regulation arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
JP3041484A 1984-02-22 1984-02-22 受信周波数補正方式 Granted JPS60176353A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3041484A JPS60176353A (ja) 1984-02-22 1984-02-22 受信周波数補正方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3041484A JPS60176353A (ja) 1984-02-22 1984-02-22 受信周波数補正方式

Publications (2)

Publication Number Publication Date
JPS60176353A true JPS60176353A (ja) 1985-09-10
JPH051662B2 JPH051662B2 (enrdf_load_stackoverflow) 1993-01-08

Family

ID=12303285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3041484A Granted JPS60176353A (ja) 1984-02-22 1984-02-22 受信周波数補正方式

Country Status (1)

Country Link
JP (1) JPS60176353A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03139941A (ja) * 1989-10-25 1991-06-14 Nec Corp 周波数変調波受信装置
JPH04264851A (ja) * 1991-02-19 1992-09-21 Tokyo Electric Co Ltd 受信機の自動周波数制御方法
US6226505B1 (en) 1996-11-20 2001-05-01 Nec Corporation Automatic frequency correction apparatus and method for radio calling system
JP2006332878A (ja) * 2005-05-24 2006-12-07 Japan Radio Co Ltd 2シンボル区間積分出力の閾値設定装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523674A (en) * 1978-08-09 1980-02-20 Fujitsu Ten Ltd Correction circuit for intermediate frequency

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523674A (en) * 1978-08-09 1980-02-20 Fujitsu Ten Ltd Correction circuit for intermediate frequency

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03139941A (ja) * 1989-10-25 1991-06-14 Nec Corp 周波数変調波受信装置
JPH04264851A (ja) * 1991-02-19 1992-09-21 Tokyo Electric Co Ltd 受信機の自動周波数制御方法
US6226505B1 (en) 1996-11-20 2001-05-01 Nec Corporation Automatic frequency correction apparatus and method for radio calling system
JP2006332878A (ja) * 2005-05-24 2006-12-07 Japan Radio Co Ltd 2シンボル区間積分出力の閾値設定装置

Also Published As

Publication number Publication date
JPH051662B2 (enrdf_load_stackoverflow) 1993-01-08

Similar Documents

Publication Publication Date Title
JP3413060B2 (ja) 直接変換受信機
US5901347A (en) Fast automatic gain control circuit and method for zero intermediate frequency receivers and radiotelephone using same
JP3744546B2 (ja) 被サンプリング信号の可変d.c.オフセットを補償する方法および装置
US6195400B1 (en) Two-mode demodulating apparatus
JPH0137055B2 (enrdf_load_stackoverflow)
US6034990A (en) Digital radio transmission and reception system applying a direct modulation and demodulation method
US6240147B1 (en) Auto frequency control apparatus
JPS6239848B2 (enrdf_load_stackoverflow)
US5663989A (en) Control arrangements for digital radio receivers
JPS5831065B2 (ja) Fsk復調装置
US5444736A (en) Radio communication apparatus having an automatic frequency control circuit for controlling a transmission frequency on the basis of a reception frequency
JPS60176353A (ja) 受信周波数補正方式
US5949829A (en) Central error detecting circuit for FSK receiver
JPS60153660A (ja) 周波数ずれ補正方式
US6389089B1 (en) Method of searching for pilot signals
JPH07288551A (ja) Fsk復調回路
JP2716475B2 (ja) デジタル遅延検波装置
US6954508B2 (en) Automatic frequency control system adapted to compensate for an insufficient capture range
JPS60119156A (ja) Msk直交同期検波回路
JP2513329B2 (ja) 周波数変調波受信装置
US7015749B1 (en) Frequency discriminator using replica compensated delay lines and method of operation
JPH01212932A (ja) Dpsk変調ヘテロダイン検波方式
JPH0260263A (ja) 無線機に用いる局部発振器の周波数安定化回路
JPH01164151A (ja) 符号判定基準電圧生成方式
JPS61156958A (ja) Gmsk変調器

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term