JPS6474804A - Microwave antenna with ask modulator - Google Patents
Microwave antenna with ask modulatorInfo
- Publication number
- JPS6474804A JPS6474804A JP23303687A JP23303687A JPS6474804A JP S6474804 A JPS6474804 A JP S6474804A JP 23303687 A JP23303687 A JP 23303687A JP 23303687 A JP23303687 A JP 23303687A JP S6474804 A JPS6474804 A JP S6474804A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- center part
- microwave
- wave
- current
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
- Transmitters (AREA)
Abstract
PURPOSE:To realize miniaturization and light weight, by integrating a modulator part to turn ON/OFF a microwave by an amplitude modulation signal with the antenna of a microstrip line. CONSTITUTION:In the antenna 1 of microstrip, a microwave signal is fed between the center part of one side 11a of a conductor pattern 11 of four sides whose side length is around 1/2-wave and the equivalent part 12a of a ground conductor 11b which corresponds to the center part. Also, an impedance control element 2 is connected between the center part of the confronting side 11b of the side 11a and the equivalent part 12b of the ground conductor 12 which corresponds to the center part. By turning ON/OFF current I from a bias power source 3 to be added on the element 2 by the amplitude modulation signal, all of the microwave signals fed to the antenna 1 are terminated at the impedance resistor R of the element 2 when the current I flows, thereby, it is not radiated to the space as a wave. Also, when the current I is cut off, the microwave signal is radiated from the antenna 1 as the wave. Therefore, the antenna 1 becomes the antenna with a modulation function.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23303687A JPS6474804A (en) | 1987-09-17 | 1987-09-17 | Microwave antenna with ask modulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23303687A JPS6474804A (en) | 1987-09-17 | 1987-09-17 | Microwave antenna with ask modulator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6474804A true JPS6474804A (en) | 1989-03-20 |
Family
ID=16948801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23303687A Pending JPS6474804A (en) | 1987-09-17 | 1987-09-17 | Microwave antenna with ask modulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6474804A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009044647A (en) * | 2007-08-10 | 2009-02-26 | Denso Wave Inc | Portable rfid-tag reader |
-
1987
- 1987-09-17 JP JP23303687A patent/JPS6474804A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009044647A (en) * | 2007-08-10 | 2009-02-26 | Denso Wave Inc | Portable rfid-tag reader |
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