JPH042148U - - Google Patents

Info

Publication number
JPH042148U
JPH042148U JP1990042150U JP4215090U JPH042148U JP H042148 U JPH042148 U JP H042148U JP 1990042150 U JP1990042150 U JP 1990042150U JP 4215090 U JP4215090 U JP 4215090U JP H042148 U JPH042148 U JP H042148U
Authority
JP
Japan
Prior art keywords
section
output
intermediate frequency
frequency
filter
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
JP1990042150U
Other languages
English (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 JP1990042150U priority Critical patent/JPH042148U/ja
Priority to US07/687,688 priority patent/US5230095A/en
Publication of JPH042148U publication Critical patent/JPH042148U/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

【図面の簡単な説明】
第１図は本考案の実施例を示す無線データ用受
信機の構成ブロツク図、第２図は従来の無線デー
タ用受信機の構成ブロツク図、第３図は第１図中
の単同調回路の回路図、第４図は、第１図中の等
化器の回路図、第５図は第１図中の単同調回路の
遅延特性図、第６図は第１図中の第２の中間周波
数ろ波部１６ａの遅延時間特性図、第７図は４素
子ラダー形セラミツクフイルタ、水晶モノシリツ
クフイルタ及び弾性表面波ろ波器の減衰特性図で
ある。 １３，１５……第１及び第２の周波数変換部、
１４，１６ａ……第１及び第２の中間周波数ろ波
部、１６……データ増幅部、１６ｂ，１６ｄ……
増幅器、１６ｃ……単同調回路、１７……検波器
、１８……等化器。

Claims (1)

  1. 【実用新案登録請求の範囲】 所定の周波数帯域を有する無線受信データを第
    １の中間周波数に変換する第１の周波数変換部と
    、前記第１の中間周波数をろ波する第１の中間周
    波数ろ波部と、前記中間周波数ろ波部の出力を第
    ２の中間周波数に変換する第２の周波数変換部と
    、前記第２の周波数変換部の出力中の前記周波数
    帯域を抽出し、その抽出結果を増幅するデータ増
    幅部と、前記データ増幅部の出力を検波する検波
    器と、前記検波部の出力の各周波数に対する伝搬
    遅延時間の偏差を補償する等化器とを、備えた無
    線データ用受信機において、 前記第１の中間周波数ろ波部は、弾性表面波ろ
    波器で構成し、 前記データ増幅部は、 前記第２の周波数変換部の出力中の前記周波数
    帯域を抽出する第２の中間周波数ろ波部と、 前記第２の中間周波数ろ波部の出力を増幅する
    増幅器と、 前記増幅器の出力を波する同調回路とを、 備えたことを特徴とする無線データ用受信機。
JP1990042150U 1990-04-20 1990-04-20 Pending JPH042148U (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1990042150U JPH042148U (ja) 1990-04-20 1990-04-20
US07/687,688 US5230095A (en) 1990-04-20 1991-04-19 Radio receiver for data communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990042150U JPH042148U (ja) 1990-04-20 1990-04-20

Publications (1)

Publication Number Publication Date
JPH042148U true JPH042148U (ja) 1992-01-09

Family

ID=12627915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990042150U Pending JPH042148U (ja) 1990-04-20 1990-04-20

Country Status (2)

Country Link
US (1) US5230095A (ja)
JP (1) JPH042148U (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6002926A (en) * 1989-09-27 1999-12-14 Nec Corporation Double superheterodyne type receiving circuit
US5572264A (en) * 1994-02-14 1996-11-05 Hitachi, Ltd. High definition TV signal receiver
US5898906A (en) * 1996-10-29 1999-04-27 Gec Plessey Semiconductors, Inc. System and method for implementing a cellular radio transmitter device
US5949472A (en) * 1996-12-10 1999-09-07 Intel Corporation Method and apparatus for tuning channels for CATV and television applications
EP1137178A1 (de) * 2000-03-22 2001-09-26 Infineon Technologies AG Schaltungsanordnung mit einem Filter und Verfahren zum Betrieb einer Schaltungsanordnung mit einem Filter
US20060238328A1 (en) * 2003-05-02 2006-10-26 Siemens Aktiengesellschaft Method for call billing communication connections between communication terminals in separate, packet-switched communication networks

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5951629A (ja) * 1982-09-17 1984-03-26 Matsushita Electric Ind Co Ltd チユ−ナ
JPS6232647B2 (ja) * 1981-08-14 1987-07-16 Matsushita Electric Works Ltd

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5627006B2 (ja) * 1973-10-01 1981-06-22
US4726072A (en) * 1983-07-28 1988-02-16 Matsushita Electric Industrial Co., Ltd. Double converter tuner
US5034994A (en) * 1989-04-13 1991-07-23 Rca Licensing Corporation Single balanced mixer with output filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6232647B2 (ja) * 1981-08-14 1987-07-16 Matsushita Electric Works Ltd
JPS5951629A (ja) * 1982-09-17 1984-03-26 Matsushita Electric Ind Co Ltd チユ−ナ

Also Published As

Publication number Publication date
US5230095A (en) 1993-07-20

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