JPS5631235A - Active antenna system - Google Patents

Active antenna system

Info

Publication number
JPS5631235A
JPS5631235A JP10787679A JP10787679A JPS5631235A JP S5631235 A JPS5631235 A JP S5631235A JP 10787679 A JP10787679 A JP 10787679A JP 10787679 A JP10787679 A JP 10787679A JP S5631235 A JPS5631235 A JP S5631235A
Authority
JP
Japan
Prior art keywords
frequency
circuit
output
local oscillation
oscillation signal
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
JP10787679A
Other languages
Japanese (ja)
Other versions
JPS6221417B2 (en
Inventor
Hiroki Aizawa
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP10787679A priority Critical patent/JPS5631235A/en
Publication of JPS5631235A publication Critical patent/JPS5631235A/en
Publication of JPS6221417B2 publication Critical patent/JPS6221417B2/ja
Granted 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
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

PURPOSE:To make stable receiving possible even if a receiver unprocessed for intermodulation interference and multipath interference is used, by connecting the system output to the antenna terminal of the receiver simply. CONSTITUTION:The receiving signal dependent upon receiving part 1 is applied to low-noise high-frequency amplifying circuit 3 through matching circuit 2 for impedance matching. This circuit 3 is constituted with the amplifier of a low-noise factor. The amplification output is mixed with the local oscillation signal of a prescribed frequency from local oscillation signal generating circuit 5 by mixing circuit 4. Band pass filter 6 is provided which leads out selectively only the prescribed- frequency signal from this mixed output. This frequency-converted output becomes an unbalanced output due to impedance converting circuit 7. By the variable operation of the signal frequency of local oscillation signal generating circuit 5, namely, the tuning operation, impedances and frequency selection characteristics of circuits 2 and 3 are interlocked with each other and are controlled variably.
JP10787679A 1979-08-23 1979-08-23 Active antenna system Granted JPS5631235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10787679A JPS5631235A (en) 1979-08-23 1979-08-23 Active antenna system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10787679A JPS5631235A (en) 1979-08-23 1979-08-23 Active antenna system

Publications (2)

Publication Number Publication Date
JPS5631235A true JPS5631235A (en) 1981-03-30
JPS6221417B2 JPS6221417B2 (en) 1987-05-12

Family

ID=14470320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10787679A Granted JPS5631235A (en) 1979-08-23 1979-08-23 Active antenna system

Country Status (1)

Country Link
JP (1) JPS5631235A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000002287A1 (en) * 1998-07-02 2000-01-13 Matsushita Electric Industrial Co., Ltd. Antenna unit, communication system and digital television receiver
US6608594B1 (en) 1999-10-08 2003-08-19 Matsushita Electric Industrial Co., Ltd. Antenna apparatus and communication system
JP2007116455A (en) * 2005-10-20 2007-05-10 Toyota Motor Corp Antenna assembly
CN111342852A (en) * 2018-12-18 2020-06-26 财团法人工业技术研究院 Wireless receiving device
CN112532240A (en) * 2019-09-17 2021-03-19 群联电子股份有限公司 Spread spectrum frequency generator, memory storage device and signal generation method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01130008U (en) * 1988-02-29 1989-09-05

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000002287A1 (en) * 1998-07-02 2000-01-13 Matsushita Electric Industrial Co., Ltd. Antenna unit, communication system and digital television receiver
US6639555B1 (en) 1998-07-02 2003-10-28 Matsushita Electric Industrial Co., Ltd. Antenna unit, communication system and digital television receiver
US6608594B1 (en) 1999-10-08 2003-08-19 Matsushita Electric Industrial Co., Ltd. Antenna apparatus and communication system
JP2007116455A (en) * 2005-10-20 2007-05-10 Toyota Motor Corp Antenna assembly
CN111342852A (en) * 2018-12-18 2020-06-26 财团法人工业技术研究院 Wireless receiving device
CN112532240A (en) * 2019-09-17 2021-03-19 群联电子股份有限公司 Spread spectrum frequency generator, memory storage device and signal generation method
CN112532240B (en) * 2019-09-17 2023-12-01 群联电子股份有限公司 Spread spectrum frequency generator, memory storage device and signal generation method

Also Published As

Publication number Publication date
JPS6221417B2 (en) 1987-05-12

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