JPS573439A - Broad band receiving circuit - Google Patents

Broad band receiving circuit

Info

Publication number
JPS573439A
JPS573439A JP7699780A JP7699780A JPS573439A JP S573439 A JPS573439 A JP S573439A JP 7699780 A JP7699780 A JP 7699780A JP 7699780 A JP7699780 A JP 7699780A JP S573439 A JPS573439 A JP S573439A
Authority
JP
Japan
Prior art keywords
band
interference
switching
input
filters
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
JP7699780A
Other languages
Japanese (ja)
Inventor
Mitsuo Saito
Hiroshi Onishi
Morikazu Sagawa
Sadahiko Yamashita
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7699780A priority Critical patent/JPS573439A/en
Publication of JPS573439A publication Critical patent/JPS573439A/en
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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0067—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
    • H04B1/0082—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands with a common local oscillator for more than one band
    • H04B1/0089—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands with a common local oscillator for more than one band using a first intermediate frequency higher that the highest of any band received
    • H04B1/0092—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands with a common local oscillator for more than one band using a first intermediate frequency higher that the highest of any band received using a wideband front end
    • 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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • 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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H04B1/006—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To reject the interference of the 2nd harmonics and the secondary beat, by constituting 3 input filters taking an arbitrary band of VHF to UHF band as a passing band, at the input side of a mixer, and switching each receiving band with a switching circuit. CONSTITUTION:At the input side of a broad band receiving circuit of duplex mixing system having the 1st and 2nd mixers 6, 9, the 1st, 2nd and 3rd input filters 20, 21, 22 are constituted. In this case, in the filters 20, 21, low band, superhigh band, hyper band, mid band, and high band in VHF band are taken as the pass band and in the filter 22, the UHF band is taken as the pass land. Further, an external signal is given to a terminal 17 to operate switching circuits 18, 19 and switching is made to the input filter of a desired reception hand. Thus, the interference of distortion such as the 2nd harmonic interference and secondary beat interference produced at a nonlinear functional blocks such as attenuator, amplifier and mixer, etc. in the circuit can be rejected.
JP7699780A 1980-06-06 1980-06-06 Broad band receiving circuit Pending JPS573439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7699780A JPS573439A (en) 1980-06-06 1980-06-06 Broad band receiving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7699780A JPS573439A (en) 1980-06-06 1980-06-06 Broad band receiving circuit

Publications (1)

Publication Number Publication Date
JPS573439A true JPS573439A (en) 1982-01-08

Family

ID=13621412

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7699780A Pending JPS573439A (en) 1980-06-06 1980-06-06 Broad band receiving circuit

Country Status (1)

Country Link
JP (1) JPS573439A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6187413A (en) * 1984-10-03 1986-05-02 Matsushita Electric Ind Co Ltd Channel selector
US5394559A (en) * 1993-04-16 1995-02-28 Conifer Corporation MMDS/ITFS bi-directional over-the-air transmission system and method therefor
US5402138A (en) * 1991-05-30 1995-03-28 Conifer Corporation Integrated MMDS/MDS antenna and dual band down converter
EP0784381A2 (en) * 1996-01-12 1997-07-16 Matsushita Electric Industrial Co., Ltd. Two band receiver
EP1680872A1 (en) * 2003-10-09 2006-07-19 Intel Corporation Method and apparatus to provide an area efficient antenna divesity receiver

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6187413A (en) * 1984-10-03 1986-05-02 Matsushita Electric Ind Co Ltd Channel selector
JPH0262962B2 (en) * 1984-10-03 1990-12-27 Matsushita Electric Ind Co Ltd
US5402138A (en) * 1991-05-30 1995-03-28 Conifer Corporation Integrated MMDS/MDS antenna and dual band down converter
US5448255A (en) * 1991-05-30 1995-09-05 Conifer Corporation Dual band down converter for MMDS/MDS antenna
US5394559A (en) * 1993-04-16 1995-02-28 Conifer Corporation MMDS/ITFS bi-directional over-the-air transmission system and method therefor
US5437052A (en) * 1993-04-16 1995-07-25 Conifer Corporation MMDS over-the-air bi-directional TV/data transmission system and method therefor
EP0784381A2 (en) * 1996-01-12 1997-07-16 Matsushita Electric Industrial Co., Ltd. Two band receiver
EP0784381A3 (en) * 1996-01-12 2002-10-30 Matsushita Electric Industrial Co., Ltd. Two band receiver
EP1680872A1 (en) * 2003-10-09 2006-07-19 Intel Corporation Method and apparatus to provide an area efficient antenna divesity receiver

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