CN204271245U - A kind of transmitting antenna of three-dimensional low-frequency read head - Google Patents
A kind of transmitting antenna of three-dimensional low-frequency read head Download PDFInfo
- Publication number
- CN204271245U CN204271245U CN201420605732.9U CN201420605732U CN204271245U CN 204271245 U CN204271245 U CN 204271245U CN 201420605732 U CN201420605732 U CN 201420605732U CN 204271245 U CN204271245 U CN 204271245U
- Authority
- CN
- China
- Prior art keywords
- antenna
- transmitting
- transmitting antenna
- read head
- frequency read
- 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.)
- Expired - Fee Related
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Abstract
A transmitting antenna for three-dimensional low-frequency read head, the drive circuit comprising three orthogonal transmitting antennas and coordinate with each transmitting antenna.Have one in described three transmitting antennas at least for air core coil, have one in described three transmitting antennas at least for magnetic rod antenna; Three antennas can be also air core coil or magnetic rod antenna entirely, and the bar magnet of magnetic rod antenna is preferably ferrite bar.The utility model provides and a kind ofly can reach the transmitting antenna of omnidirectional's reception with the transponder cooperating being only provided with an one dimension reception antenna.
Description
Technical field
The utility model relates to a kind of transmitting antenna, particularly relates to a kind of transmitting antenna of three-dimensional low-frequency read head.
Background technology
Transmitting antenna is widely used on our daily life various electronic equipments used now.Transmitting antenna in existing low frequency card-reading system is one dimension transmitting antenna, namely the alternating magnetic field signal of a fixed-direction can only be sent, if transponder will be mated work and reach omnidirectional's reception, just must multiple reception antenna be set in transponder, and will arranges in transponder and multiple signal processing circuit coordinated with reception antenna.Current transponder occurs mainly with the form of portable set, if the signal circuit arranging multiple reception antenna and coordinate with reception antenna in transponder will inevitably cause, the volume of transponder increases, weight increases, and this greatly have impact on the portability of transponder and the cost of transponder can be caused significantly to increase.Need badly now and a kind ofly can reach the transmitting antenna of omnidirectional's reception with the transponder cooperating being only provided with an one dimension reception antenna.
Utility model content
The utility model want technical solution problem to be, providing a kind of can reach the transmitting antenna of omnidirectional's reception with the transponder cooperating being only provided with an one dimension reception antenna.
For solving above technical problem, the technical solution of the utility model is: a kind of transmitting antenna of three-dimensional low-frequency read head, and its key is: the drive circuit comprising three orthogonal transmitting antennas and coordinate with each transmitting antenna.
As improvement one of the present utility model, described three transmitting antennas are air core coil.
As improvement two of the present utility model, described three transmitting antennas are magnetic rod antenna.
Further improve as the utility model, the bar magnet of described magnetic rod antenna is ferrite bar.
As improvement three of the present utility model, has one in described three transmitting antennas at least for air core coil.
Further improve as the utility model, have one in described three transmitting antennas at least for magnetic rod antenna.
Further improve as the utility model, the bar magnet of described magnetic rod antenna is ferrite bar.
By implementing, the utility model is desirable obtains following beneficial effect:
A transmitting antenna for three-dimensional low-frequency read head, the drive circuit comprising three orthogonal transmitting antennas and coordinate with each transmitting antenna.Each transmitting antenna, by drive circuit timesharing circulation driving respectively, sends low frequency signal to transponder, by adjustment antenna and drive circuitry parameter, the frequency range of each transmitting antenna can be made roughly the same.Transponder like this in frequency range will receive the substantially vertical alternating magnetic field signal in three directions respectively at Different periods, now only need the reception antenna in a direction just can reach the omnidirectional's reception not having dead angle.Have one in described three transmitting antennas at least for air core coil, have one in described three transmitting antennas at least for magnetic rod antenna; Three antennas can be also air core coil or magnetic rod antenna entirely, and the bar magnet of magnetic rod antenna is preferably ferrite bar.The launching effect of the transmitting antenna of this structure is better.The utility model is skillfully constructed, and this function is very practical, is with a wide range of applications.
Accompanying drawing explanation
Below in conjunction with Figure of description, the utility model is described in more detail, wherein:
Fig. 1 is schematic diagram one of the present utility model;
Fig. 2 is schematic diagram two of the present utility model;
Wherein, Fig. 1 is coil; Fig. 2 is magnetic rod antenna.
Embodiment
As shown in Figure 1, a transmitting antenna for three-dimensional low-frequency read head, the drive circuit comprising three orthogonal transmitting antennas and coordinate with each transmitting antenna, one of them antenna is air core coil, another two antennas are magnetic rod antenna, and the bar magnet of magnetic rod antenna is ferrite bar.
As shown in Figure 2, a transmitting antenna for three-dimensional low-frequency read head, the drive circuit comprising three orthogonal transmitting antennas and coordinate with each transmitting antenna, wherein two each and every one antennas are air core coil, another antenna is magnetic rod antenna, and the bar magnet of magnetic rod antenna is ferrite bar.
Must be pointed out, some non-restrictive explanations that above-mentioned embodiment is just made the utility model.But person of skill in the art will appreciate that, do not departing under aim of the present utility model and scope, can make amendment to the utility model, replace and change, these amendments, replacement and change still belong to protection range of the present utility model.
Claims (7)
1. a transmitting antenna for three-dimensional low-frequency read head, is characterized in that: the drive circuit comprising three orthogonal transmitting antennas and coordinate with each transmitting antenna.
2. the transmitting antenna of a kind of three-dimensional low-frequency read head according to claim 1, is characterized in that: have one in described three transmitting antennas at least for air core coil.
3. the transmitting antenna of a kind of three-dimensional low-frequency read head according to claim 2, is characterized in that: have one in described three transmitting antennas at least for magnetic rod antenna.
4. the transmitting antenna of a kind of three-dimensional low-frequency read head according to claim 3, is characterized in that: the bar magnet of described magnetic rod antenna is ferrite bar.
5. the transmitting antenna of a kind of three-dimensional low-frequency read head according to claim 1, is characterized in that: described three transmitting antennas are air core coil.
6. the transmitting antenna of a kind of three-dimensional low-frequency read head according to claim 1, is characterized in that: described three transmitting antennas are magnetic rod antenna.
7. the transmitting antenna of a kind of three-dimensional low-frequency read head according to claim 6, is characterized in that: the bar magnet of described magnetic rod antenna is ferrite bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605732.9U CN204271245U (en) | 2014-10-21 | 2014-10-21 | A kind of transmitting antenna of three-dimensional low-frequency read head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420605732.9U CN204271245U (en) | 2014-10-21 | 2014-10-21 | A kind of transmitting antenna of three-dimensional low-frequency read head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204271245U true CN204271245U (en) | 2015-04-15 |
Family
ID=52806092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420605732.9U Expired - Fee Related CN204271245U (en) | 2014-10-21 | 2014-10-21 | A kind of transmitting antenna of three-dimensional low-frequency read head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204271245U (en) |
-
2014
- 2014-10-21 CN CN201420605732.9U patent/CN204271245U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20191021 |