JPS5555632A - Antenna unit - Google Patents

Antenna unit

Info

Publication number
JPS5555632A
JPS5555632A JP2123078A JP2123078A JPS5555632A JP S5555632 A JPS5555632 A JP S5555632A JP 2123078 A JP2123078 A JP 2123078A JP 2123078 A JP2123078 A JP 2123078A JP S5555632 A JPS5555632 A JP S5555632A
Authority
JP
Japan
Prior art keywords
antenna
length
frequency
constitution
fed
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
JP2123078A
Other languages
Japanese (ja)
Other versions
JPS581571B2 (en
Inventor
Takehisa Yanagisawa
Toshio Takegawa
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.)
Yokowo Co Ltd
Original Assignee
Yokowo Mfg 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 Yokowo Mfg Co Ltd filed Critical Yokowo Mfg Co Ltd
Priority to JP53021230A priority Critical patent/JPS581571B2/en
Publication of JPS5555632A publication Critical patent/JPS5555632A/en
Publication of JPS581571B2 publication Critical patent/JPS581571B2/en
Expired 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
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Transceivers (AREA)
  • Transmitters (AREA)

Abstract

PURPOSE:To obtain the antenna for automobile mounting with excellent characteristics to the frequency of broad band, by changing the length of antenna element to the frequency to be received and keeping the standing wave ratio to the length at excellent small value at all times. CONSTITUTION:The signal from the antenna element 1 driven with motor is fed to the receiver 3 or standing wave ratio detection section 4 with the switch means 2, and the FM control oscillator 5 having the tuning knob is connected to the DC power supply 7 with other switching means 6 in interlocking with the switching means 2 to make it operative. Next, the waves in a given frequency oscillated at the oscillation section 5 is fed to the element 1 and matched at the detection section 4, and the element 5 is moved up and down or fixed with the control section 8 by using the signal from it. With this constitution, to move the element 1 up and down, it is inserted in the antenna containing tube 12, and the drive cord tied with the pole at the tip through the inside of the element 1 is operated with the rotary drum 9 and the length is adjusted with cooperation with the spring 21.
JP53021230A 1978-02-25 1978-02-25 antenna device Expired JPS581571B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53021230A JPS581571B2 (en) 1978-02-25 1978-02-25 antenna device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53021230A JPS581571B2 (en) 1978-02-25 1978-02-25 antenna device

Publications (2)

Publication Number Publication Date
JPS5555632A true JPS5555632A (en) 1980-04-23
JPS581571B2 JPS581571B2 (en) 1983-01-12

Family

ID=12049216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53021230A Expired JPS581571B2 (en) 1978-02-25 1978-02-25 antenna device

Country Status (1)

Country Link
JP (1) JPS581571B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760445U (en) * 1980-09-27 1982-04-09
JPS5870636A (en) * 1981-10-22 1983-04-27 Fujitsu Ten Ltd Antenna device for car-mounting receiver and transmitter
JPS58131828A (en) * 1982-02-01 1983-08-05 Fujitsu Ten Ltd Diversity antenna device for on-vehicle receiver and transmitter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62121969U (en) * 1986-01-24 1987-08-03

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5760445U (en) * 1980-09-27 1982-04-09
JPS5870636A (en) * 1981-10-22 1983-04-27 Fujitsu Ten Ltd Antenna device for car-mounting receiver and transmitter
JPS58131828A (en) * 1982-02-01 1983-08-05 Fujitsu Ten Ltd Diversity antenna device for on-vehicle receiver and transmitter

Also Published As

Publication number Publication date
JPS581571B2 (en) 1983-01-12

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