JPS57180204A - Phase difference feeding antenna - Google Patents

Phase difference feeding antenna

Info

Publication number
JPS57180204A
JPS57180204A JP6407081A JP6407081A JPS57180204A JP S57180204 A JPS57180204 A JP S57180204A JP 6407081 A JP6407081 A JP 6407081A JP 6407081 A JP6407081 A JP 6407081A JP S57180204 A JPS57180204 A JP S57180204A
Authority
JP
Japan
Prior art keywords
circuit
antenna
phase difference
switch circuit
feeding antenna
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
JP6407081A
Other languages
Japanese (ja)
Inventor
Shinobu Kawarada
Jun Horie
Chiaki Hirano
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 Corp
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 Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP6407081A priority Critical patent/JPS57180204A/en
Publication of JPS57180204A publication Critical patent/JPS57180204A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/002—Antennas or antenna systems providing at least two radiating patterns providing at least two patterns of different beamwidth; Variable beamwidth antennas

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To easily change the directivity, by providing a switch circuit between a mixing circuit of a phase difference feeding antenna and a phase difference delay circuit and turning on/off the switch circuit. CONSTITUTION:In a phase difference feeding antenna, a switch circuit 5 is inserted between a phase delay circuit and a mixing circuit 4. When the switch circuit 5 turns off, the directivity characteristics of the antenna are as shown in Fig. A. Further, when the switch circuit 5 turns on, the mixing circuit 4 and the phase delay circuit 3 is disconnected, the output of a front antenna element 1 is directly connected to a feeding section via the mixing circuit 4, and the directivity characteristics are as the shape of the figure 8 of a conventional lambda/2 dipole antenna. Thus, the directivity characteristics of the antenna are switched as shonwn in Figs. A and B through turning on/off of the switch circuit 5.
JP6407081A 1981-04-30 1981-04-30 Phase difference feeding antenna Pending JPS57180204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6407081A JPS57180204A (en) 1981-04-30 1981-04-30 Phase difference feeding antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6407081A JPS57180204A (en) 1981-04-30 1981-04-30 Phase difference feeding antenna

Publications (1)

Publication Number Publication Date
JPS57180204A true JPS57180204A (en) 1982-11-06

Family

ID=13247458

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6407081A Pending JPS57180204A (en) 1981-04-30 1981-04-30 Phase difference feeding antenna

Country Status (1)

Country Link
JP (1) JPS57180204A (en)

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