JPS642407A - Variable resonance frequency antenna - Google Patents
Variable resonance frequency antennaInfo
- Publication number
- JPS642407A JPS642407A JP15861587A JP15861587A JPS642407A JP S642407 A JPS642407 A JP S642407A JP 15861587 A JP15861587 A JP 15861587A JP 15861587 A JP15861587 A JP 15861587A JP S642407 A JPS642407 A JP S642407A
- Authority
- JP
- Japan
- Prior art keywords
- conductor length
- resonance frequency
- conductor
- memory
- frequency band
- 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
Abstract
PURPOSE: To vary the resonance frequency of an antenna to a desired value by providing a conductor length adjusting mechanism which varies a resonance frequency band used by a liner antenna by adjusting the length of a conductor and a conductor length setting mechanism setting the adjustment quantity of the conductor length adjusting mechanism to a specific quantity automatically.
CONSTITUTION: When a manual switch is set to a desired channel, the interlocking switch 19 of the conductor length setting mechanism 8 is switched associatively and the memory 14 of the conductor length setting mechanism 8 is selected. Then respective stepping motors 11 for a radiator 1, a reflector 2, and a waveguide 3 are driven through a controller 12 for conductor length adjusting mechanisms 7 and 7' and the conductor length of each element is adjusted to conductor length corresponding to a resonance frequency band set in the memory 14 previously. Further, the interlocking switch 19 of the element-to-element distance setting mechanism 18 is switched associatively with the manual switch. Then the mutual interval between elements is adjusted to a set mutual interval corresponding to the resonance frequency band, previously setting in a memory 14.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-158615A JPH012407A (en) | 1987-06-25 | Resonant frequency variable antenna |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-158615A JPH012407A (en) | 1987-06-25 | Resonant frequency variable antenna |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS642407A true JPS642407A (en) | 1989-01-06 |
JPH012407A JPH012407A (en) | 1989-01-06 |
Family
ID=
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100796556B1 (en) | 2006-06-13 | 2008-01-21 | 이시현 | Reader for rfid system |
EP3364498A1 (en) * | 2017-02-21 | 2018-08-22 | Vestel Elektronik Sanayi ve Ticaret A.S. | Tuneable antenna and method for usage of such a tuneable antenna |
JP2019212946A (en) * | 2018-05-31 | 2019-12-12 | 正毅 千葉 | Antenna device |
DE102019004610A1 (en) | 2018-07-04 | 2020-01-09 | Mitutoyo Corporation | DIMENSION MEASUREMENT METHOD USING A PROJECTION IMAGE TAKEN BY AN X-RAY CT DEVICE |
DE102019004607A1 (en) | 2018-07-04 | 2020-01-09 | Mitutoyo Corporation | CT RECONSTRUCTION METHOD USING A FILTERED REAR PROJECTION |
WO2021033232A1 (en) * | 2019-08-19 | 2021-02-25 | 正毅 千葉 | Antenna device |
US11984674B2 (en) | 2019-08-19 | 2024-05-14 | Selki Chiba | Antenna device |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100796556B1 (en) | 2006-06-13 | 2008-01-21 | 이시현 | Reader for rfid system |
EP3364498A1 (en) * | 2017-02-21 | 2018-08-22 | Vestel Elektronik Sanayi ve Ticaret A.S. | Tuneable antenna and method for usage of such a tuneable antenna |
JP2019212946A (en) * | 2018-05-31 | 2019-12-12 | 正毅 千葉 | Antenna device |
DE102019004610A1 (en) | 2018-07-04 | 2020-01-09 | Mitutoyo Corporation | DIMENSION MEASUREMENT METHOD USING A PROJECTION IMAGE TAKEN BY AN X-RAY CT DEVICE |
DE102019004607A1 (en) | 2018-07-04 | 2020-01-09 | Mitutoyo Corporation | CT RECONSTRUCTION METHOD USING A FILTERED REAR PROJECTION |
WO2021033232A1 (en) * | 2019-08-19 | 2021-02-25 | 正毅 千葉 | Antenna device |
CN114270628A (en) * | 2019-08-19 | 2022-04-01 | 千叶正毅 | Antenna device |
US20220294117A1 (en) * | 2019-08-19 | 2022-09-15 | Seiki Chiba | Antenna device |
US11984674B2 (en) | 2019-08-19 | 2024-05-14 | Selki Chiba | Antenna device |
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