JPS56708A - Tuning type antenna unit - Google Patents
Tuning type antenna unitInfo
- Publication number
- JPS56708A JPS56708A JP7625679A JP7625679A JPS56708A JP S56708 A JPS56708 A JP S56708A JP 7625679 A JP7625679 A JP 7625679A JP 7625679 A JP7625679 A JP 7625679A JP S56708 A JPS56708 A JP S56708A
- Authority
- JP
- Japan
- Prior art keywords
- impedance
- antenna
- semifixed
- dispersion
- circuit
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
Landscapes
- Details Of Aerials (AREA)
Abstract
PURPOSE:To increase the characteristics for transmission and reception system, by absorbing the dispersion in the tuned frequency range with the constant adjustment of the semifixed reactance circuit. CONSTITUTION:The semifixed reactance circuits 2, 2' are provided at the power feeding side of the antenna elements 1, 1' and the two constitute the antenna element by series circuit, then the synthesis of the impedance of each element and that of semifixed reactance is the impedance of the antenna element. Accordingly, by adjusting the impedance by adding the impedance in the tuning circuit 3 to this antenna impedance, the impedance at the power feeding terminals 4, 4' is a required pure resistance value to the frequencies to be tuned. Thus, since the dispersion of tuned frequency range caused by the dispersion in the constant of elements constituting the antenna circuit is absorbed, the characteristic of the transmission and reception system can be increased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7625679A JPS56708A (en) | 1979-06-14 | 1979-06-14 | Tuning type antenna unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7625679A JPS56708A (en) | 1979-06-14 | 1979-06-14 | Tuning type antenna unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56708A true JPS56708A (en) | 1981-01-07 |
Family
ID=13600115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7625679A Pending JPS56708A (en) | 1979-06-14 | 1979-06-14 | Tuning type antenna unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56708A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002019465A1 (en) * | 2000-08-31 | 2002-03-07 | Matsushita Electric Industrial Co., Ltd. | Built-in antenna for radio communication terminal |
-
1979
- 1979-06-14 JP JP7625679A patent/JPS56708A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002019465A1 (en) * | 2000-08-31 | 2002-03-07 | Matsushita Electric Industrial Co., Ltd. | Built-in antenna for radio communication terminal |
US6987485B2 (en) | 2000-08-31 | 2006-01-17 | Matsushita Electric Industrial Co., Ltd. | Built-in antenna for radio communication terminal |
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