CN104092021A - Ground penetrating radar dual-band antenna - Google Patents
Ground penetrating radar dual-band antenna Download PDFInfo
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- CN104092021A CN104092021A CN201410365984.3A CN201410365984A CN104092021A CN 104092021 A CN104092021 A CN 104092021A CN 201410365984 A CN201410365984 A CN 201410365984A CN 104092021 A CN104092021 A CN 104092021A
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Abstract
The invention relates to a ground penetrating radar dual-band antenna. The dual-band antenna is provided with a feed circuit (1), two antenna elements (2 and 3) and a shielding shell (4). The antenna elements (2 and 3) are connected with the feed circuit (1) through transmission circuits (5a and 6a) respectively and connected with the shielding shell (4) through wire circuits (7a, 7b, 8a and 8b) respectively, and the dual-band antenna is provided with balance-unbalance switching electronic elements (9 and 10) and resistor elements (11a, 11b, 12a, 12b, 13a, 13b, 14a and 14b), wherein the resistor elements conduct impedance matching. The ground penetrating radar dual-band antenna is characterized in that the electronic elements (9 and 10) are arranged in the transmission circuits (5a and 6a) respectively, and the resistor elements (11a, 11b, 12a, 12b, 13a, 13b, 14a and 14b) are arranged in the wire circuits (7a, 7b, 8a and 8b) respectively.
Description
Technical field
The invention belongs to ground penetrating radar low-frequency antenna technical field, particularly a kind of dual-frequency combined antenna for ground penetrating radar, has realized the double frequency function of radar detection.
Background technology
Ground penetrating radar (GPR) be a kind of fast, the geophysical prospecting method of efficient, lossless detection.Ground penetrating radar is utilized a transmission antennas transmit frequency electromagnetic waves, and another antenna reception is from the reflected wave of buried target medium interface, then to obtaining to such an extent that data are carried out analyzing and processing, and then obtains the distribution of buried target.Wherein, radar antenna is parts the most key in ground penetrating radar system, and the performance of antenna affects the performance of ground penetrating radar and the degree of depth of target acquisition and detection accuracy to a great extent.Current ground exploring radar antenna be take single-band antenna as main, and its emitted energy is limited, and only 20 meters of most of detection ranges are difficult to meet meticulous detection demand in larger distance range; Limited bandwidth, so signal resolution ability is poor; The interference that single-band antenna is surveyed surrounding enviroment is larger, therefore has relatively low signal to noise ratio.
In order to improve detection accuracy when increasing investigation depth, need the ground exploring radar antenna that can launch two kinds of frequencies of development of new.Dual-band antenna can increase the degree of depth of detection by two low frequency signal stack advantages, to meet investigation depth requirement, the use of two alien frequencies signals simultaneously has again the feature that amount of information is complementary and can increase the beamwidth of antenna, thereby can effectively improve the resolution capability of detection of a target body.
Summary of the invention
Task of the present invention is, a kind of ground penetrating radar dual-band antenna is provided, and realizes the double frequency function of radar detection.
According to the present invention, described task solves in the following manner:
1. the present invention relates to a kind of dual-band antenna for ground penetrating radar, described dual-band antenna has a feed circuit (1), two antenna elements (2 and 3) and a screening can (4), described antenna element (2 and 3) is connected with described feeder line (1) by a conveying circuit (5a and 6a) respectively, described antenna element is respectively by a wire line (7a, 7b and 8a, 8b) be connected with described screening can (4), and described dual-band antenna has and carries out the electronic component (9 and 10) of balanced-unbalanced conversion and the resistive element (11a that carries out impedance matching, 11b, 12a, 12b, 13a, 13b, 14a, 14b), it is characterized in that, described electronic component (9 and 10) is only separately positioned in described delivery circuit (5a and 6a), described resistive element (11a, 11b, 12a, 12b, 13a, 13b, 14a, 14b) be only separately positioned on described wire circuit (7a, 7b and 8a, 8b),
2. dual-band antenna according to claim 1, two antenna elements (2) and (3) are in same copper-clad plate, screening can (4) is the hollow cuboid of an opening, the copper-clad plate at antenna element (2) and (3) place is placed on the opening surface of screening can, and forms a closed hollow cuboid with screening can (4);
3. dual-band antenna according to claim 1, described antenna element (2) is connected with screening can (4) with (7b) by wire line (7a), and described antenna element (3) is connected with screening can (4) with (8b) by wire line (8a);
4. dual-band antenna according to claim 1, feed circuit (1) output two strip transmission line roads (5a) and (6a), wherein (5a) is connected with antenna element (2), (6a) be connected with antenna element (3), conveying circuit (5a and 6a) all passes and is connected with external circuit from the relative one side of screening can (4) opening surface;
5. dual-band antenna according to claim 1, described electronic component (9) is arranged on the end that connects antenna element (2) of facing of delivery circuit (5a), and described electronic component (10) is arranged on the end that connects antenna element (3) of facing of delivery circuit (6a);
6. dual-band antenna according to claim 1, described electronic component (9) is arranged on the end that connects antenna element (2) of facing of delivery circuit (5a), and described electronic component (10) is arranged on the end that connects antenna element (3) of facing of delivery circuit (6a);
7. dual-band antenna according to claim 1, resistive element (11a) and (11b) the parallel end that connects antenna element (2) of facing that is arranged on wire line (7a), resistive element (12a) and (12b) the parallel end that connects antenna element (2) of facing that is arranged on wire line (7b);
8. dual-band antenna according to claim 1, resistive element (13a) and (13b) the parallel end that connects antenna element (3) of facing that is arranged on wire line (8a), resistive element (14a) and (14b) the parallel end that connects antenna element (3) of facing that is arranged on wire line (8b).
Accompanying drawing explanation
Fig. 1: according to the ground penetrating radar dual-band antenna of an embodiment of the invention.
Fig. 2: the embodiment of feed circuit (1).
Fig. 3 to 4: the execution mode that is connected of antenna element (2) and screening can (4).
Fig. 5 to 6: the execution mode that is connected of antenna element (3) and screening can (4).
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As shown in Figure 1, be a kind of ground penetrating radar dual-band antenna of the present invention, comprise a feed circuit (1), two antenna elements (2 and 3) and a screening can (4).Two antenna elements (2) and (3) are in same copper-clad plate, and its size is 840mm*420mm, and screening can (4) is the hollow cuboid of an opening, and its size is 840mm*420mm*120mm.Antenna element (2) is connected with screening can (4) by a copper wires circuit (7a, 7b and 8a, 8b) respectively with (3), jointly forms a closed hollow cuboid.
As depicted in figs. 1 and 2, dual-band antenna element (2 and 3) is connected with feeder line (1) by a conveying circuit (5a and 6a) respectively, conveying circuit (5a) provide electric feed signal for antenna element (2), and conveying circuit (6a) provide electric feed signal for antenna element (3).Because electric feed signal is a unipolar pulse signal, need to after balanced-unbalanced conversion, be defeated by antenna element, so be also provided with respectively the electronic component (9 and 10) of two balanced-unbalanceds conversion in two conveying circuits (5a and 6a), and (9 and 10) are positioned at and face the end that connects antenna element.Conveying circuit (5a and 6a) all passes and is connected with external circuit from the relative one side of screening can (4) opening surface.
As shown in Figures 3 to 6,8 resistive elements (11a, 11b, 12a, 12b, 13a, 13b, 14a, 14b) are arranged in wire circuit (7a, 7b and 8a, 8b), its objective is in order to realize the impedance matching of antenna, wherein (11a, 11b) walks abreast and is arranged on the two ends of antenna element (2) respectively with (12a, 12b), and is connected with (7a, 7b) respectively; (13a, 13b) and (14a, 14b) walk abreast and are arranged on the two ends of antenna element (3) respectively, and are connected with (8a, 8b) respectively.
After having assembled according to the method described above, in feed circuit (1) load signal, dual-band antenna can carry out work.
Claims (8)
1. the present invention relates to a kind of dual-band antenna for ground penetrating radar, described dual-band antenna has a feed circuit (1), two antenna elements (2 and 3) and a screening can (4), described antenna element (2 and 3) is connected with described feeder line (1) by a conveying circuit (5a and 6a) respectively, described antenna element is respectively by a wire line (7a, 7b and 8a, 8b) be connected with described screening can (4), and described dual-band antenna has and carries out the electronic component (9 and 10) of balanced-unbalanced conversion and the resistive element (11a that carries out impedance matching, 11b, 12a, 12b, 13a, 13b, 14a, 14b), it is characterized in that, described electronic component (9 and 10) is only separately positioned in described delivery circuit (5a and 6a), described resistive element (11a, 11b, 12a, 12b, 13a, 13b, 14a, 14b) be only separately positioned on described wire circuit (7a, 7b and 8a, 8b).
2. dual-band antenna according to claim 1, two antenna elements (2) and (3) are in same copper-clad plate, screening can (4) is the hollow cuboid of an opening, the copper-clad plate at antenna element (2) and (3) place is placed on the opening surface of screening can, and forms a closed hollow cuboid with screening can (4).
3. dual-band antenna according to claim 1, described antenna element (2) is connected with screening can (4) with (7b) by wire line (7a), and described antenna element (3) is connected with screening can (4) with (8b) by wire line (8a).
4. dual-band antenna according to claim 1, feed circuit (1) output two strip transmission line roads (5a) and (6a), wherein (5a) is connected with antenna element (2), (6a) be connected with antenna element (3), conveying circuit (5a and 6a) all passes and is connected with external circuit from the relative one side of screening can (4) opening surface.
5. dual-band antenna according to claim 1, described electronic component (9) is arranged on the end that connects antenna element (2) of facing of delivery circuit (5a), and described electronic component (10) is arranged on the end that connects antenna element (3) of facing of delivery circuit (6a).
6. dual-band antenna according to claim 1, described electronic component (9) is arranged on the end that connects antenna element (2) of facing of delivery circuit (5a), and described electronic component (10) is arranged on the end that connects antenna element (3) of facing of delivery circuit (6a).
7. dual-band antenna according to claim 1, resistive element (11a) and (11b) the parallel end that connects antenna element (2) of facing that is arranged on wire line (7a), resistive element (12a) and (12b) the parallel end that connects antenna element (2) of facing that is arranged on wire line (7b).
8. dual-band antenna according to claim 1, resistive element (13a) and (13b) the parallel end that connects antenna element (3) of facing that is arranged on wire line (8a), resistive element (14a) and (14b) the parallel end that connects antenna element (3) of facing that is arranged on wire line (8b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410365984.3A CN104092021B (en) | 2014-07-30 | 2014-07-30 | Ground penetrating radar dual-band antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410365984.3A CN104092021B (en) | 2014-07-30 | 2014-07-30 | Ground penetrating radar dual-band antenna |
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| CN104092021A true CN104092021A (en) | 2014-10-08 |
| CN104092021B CN104092021B (en) | 2017-05-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161864A (en) * | 2015-06-23 | 2015-12-16 | 中国矿业大学(北京) | Improved dual-frequency antenna for ground penetrating radar |
| CN109633758A (en) * | 2018-12-25 | 2019-04-16 | 北京华航无线电测量研究所 | A kind of compound ground penetrating radar system of multifrequency |
| CN111487618A (en) * | 2020-06-11 | 2020-08-04 | 中国地质大学（北京） | Earth surface reconfigurable impedance matching method and device applied to ground penetrating radar |
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| CN105161864A (en) * | 2015-06-23 | 2015-12-16 | 中国矿业大学(北京) | Improved dual-frequency antenna for ground penetrating radar |
| CN105161864B (en) * | 2015-06-23 | 2018-06-15 | 中国矿业大学(北京) | A kind of improved Ground Penetrating Radar dual-band antenna |
| CN109633758A (en) * | 2018-12-25 | 2019-04-16 | 北京华航无线电测量研究所 | A kind of compound ground penetrating radar system of multifrequency |
| CN111487618A (en) * | 2020-06-11 | 2020-08-04 | 中国地质大学（北京） | Earth surface reconfigurable impedance matching method and device applied to ground penetrating radar |
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| Publication number | Publication date |
|---|---|
| CN104092021B (en) | 2017-05-17 |
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