JPS6454906A - Reception antenna - Google Patents
Reception antennaInfo
- Publication number
- JPS6454906A JPS6454906A JP62212196A JP21219687A JPS6454906A JP S6454906 A JPS6454906 A JP S6454906A JP 62212196 A JP62212196 A JP 62212196A JP 21219687 A JP21219687 A JP 21219687A JP S6454906 A JPS6454906 A JP S6454906A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- tuning circuit
- coil
- capacitor
- frequencies
- 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)
Abstract
PURPOSE:To form the titled antenna with high Q, small size and excellent selectivity by using a dual tuning circuit comprising a coil and a capacitor and having two tuning frequencies. CONSTITUTION:A reception antenna 10 has a dual tuning circuit, which consists of a primary tuning circuit comprising a coil L1 and a capacitor C1 and a secondary tuning circuit comprising a coil L2 and a capacitor C2. The antenna 10 has a characteristic to tune with two different frequencies by having only to use one of the coils L1 and L2 as the antenna coil. In order to tune the antenna to the two reception frequencies, the coils and capacitors in pairs on the primary tuning circuit and the secondary tuning circuit are both selected to have component values to be tuned to the center frequency between the two reception frequencies and a double peak tuning characteristic to tune sharply to the two reception frequencies is obtained by adjusting a coupling capacitor CK. Thus, the titled antenna with high Q, small size and excellent selectivity is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62212196A JPS6454906A (en) | 1987-08-26 | 1987-08-26 | Reception antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62212196A JPS6454906A (en) | 1987-08-26 | 1987-08-26 | Reception antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6454906A true JPS6454906A (en) | 1989-03-02 |
Family
ID=16618512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62212196A Pending JPS6454906A (en) | 1987-08-26 | 1987-08-26 | Reception antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6454906A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0613209A1 (en) * | 1993-02-26 | 1994-08-31 | Nec Corporation | A two-frequency impedance matching circuit for an antenna |
| JPH08330841A (en) * | 1995-05-30 | 1996-12-13 | N H K Itec:Kk | Multifrequency tuning-type loop antenna device |
| JPH09199922A (en) * | 1996-01-12 | 1997-07-31 | Kyocera Corp | Antenna system |
| US6930646B2 (en) | 1995-08-22 | 2005-08-16 | Mitsubishi Materials Corporation | Transponder and antenna |
| WO2009063537A1 (en) * | 2007-11-12 | 2009-05-22 | Fujitsu Limited | Radio relay device, radio relay vehicle, and radio relay method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5285452A (en) * | 1976-01-08 | 1977-07-15 | Nagara Denshi Kougiyou Kk | Multiple band antenna |
| JPS6149502A (en) * | 1984-08-17 | 1986-03-11 | Nippon Denso Co Ltd | Antenna for automobile |
-
1987
- 1987-08-26 JP JP62212196A patent/JPS6454906A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5285452A (en) * | 1976-01-08 | 1977-07-15 | Nagara Denshi Kougiyou Kk | Multiple band antenna |
| JPS6149502A (en) * | 1984-08-17 | 1986-03-11 | Nippon Denso Co Ltd | Antenna for automobile |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0613209A1 (en) * | 1993-02-26 | 1994-08-31 | Nec Corporation | A two-frequency impedance matching circuit for an antenna |
| JPH08330841A (en) * | 1995-05-30 | 1996-12-13 | N H K Itec:Kk | Multifrequency tuning-type loop antenna device |
| US6930646B2 (en) | 1995-08-22 | 2005-08-16 | Mitsubishi Materials Corporation | Transponder and antenna |
| JPH09199922A (en) * | 1996-01-12 | 1997-07-31 | Kyocera Corp | Antenna system |
| WO2009063537A1 (en) * | 2007-11-12 | 2009-05-22 | Fujitsu Limited | Radio relay device, radio relay vehicle, and radio relay method |
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