CN203205546U - Multiband antenna - Google Patents
Multiband antenna Download PDFInfo
- Publication number
- CN203205546U CN203205546U CN 201320174244 CN201320174244U CN203205546U CN 203205546 U CN203205546 U CN 203205546U CN 201320174244 CN201320174244 CN 201320174244 CN 201320174244 U CN201320174244 U CN 201320174244U CN 203205546 U CN203205546 U CN 203205546U
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- CN
- China
- Prior art keywords
- microstrip line
- antenna
- radiant body
- circuit board
- ground plate
- 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 - Lifetime
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Abstract
The utility model relates to the technical field of antennas, particularly a multiband antenna, including a coaxial cable, and a microstrip antenna and a helical antenna having different resonant frequencies. The microstrip antenna includes a PCB circuit board, and a ground plate microstrip line and a radiator microstrip line arranged at the side of the PCB circuit board. The inner conductor of the coaxial cable is electrically connected with the radiator microstrip line. The outer conductor of the coaxial cable is electrically connected with the ground plate microstrip line. The tail of the helical antenna is electrically connected with the radiator microstrip line. The microstrip antenna and the helical antenna are both connected with ground by the ground plate, and can feed through the coaxial cable, so that the antenna can operate in two bands. The helical antenna is generally used for low frequency, and the microstrip antenna is generally used for high frequency, so the two operation frequency bands of the antenna differ largely and the antenna has good performance.
Description
Technical field
The utility model relates to antenna technical field, particularly relates to a kind of multiband antenna.
Background technology
Antenna is a kind of electromagnetic parts that are used for launching or receiving in wireless device, and its is transformed into the electromagnetic wave of propagating to guided wave of transmission above-the-line promotion in unbounded media (normally free space), perhaps carry out opposite conversion.Antenna is widely used in engineering systems such as radio communication, broadcasting, TV, radar, navigation, electronic countermeasures, remote sensing, radio astronomy.
Along with development of wireless communication devices, multiple communication standard has appearred, the frequency range that adopts is also had any different, as two frequency ranges of GSM network using 900MHZ, 1800MHZ of China, and U.S. GSM uses 1900MHZ, for wireless router, be operated in 2.4GHZ mostly, develop at present the trend of 3.5GHZ, 5.8GHz in addition, correspondingly, also require the antenna of these equipment under multiband, to work.For multiband antenna, microstrip antenna is a kind of good selection, microstrip antenna is a class new antenna that grows up gradually over nearly 30 years, it utilizes microstrip line or coaxial pair metal patch feed to constitute antenna by at the metal patch of a thin-medium substrate surface with definite shape, generally improves by the shape to microstrip antenna in the prior art, make it can be used for two wave bands, but, this multiband antenna design trouble, and the frequency range of work is more approaching.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, and a kind of multiband antenna is provided, its microstrip antenna, helical antenna by having different resonance frequencys makes the utility model can be operated in two frequency ranges, scientific structure is simple, has more performance.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of multiband antenna, it comprises coaxial line, has different resonance microstrip antenna, helical antenna frequently, described microstrip antenna comprises the PCB circuit board, is arranged at the ground plate microstrip line of described PCB circuit board side, radiant body microstrip line, the inner wire of described coaxial line is electrically connected with described radiant body microstrip line, the outer conductor of described coaxial line is electrically connected with described ground plate microstrip line, and the tail end of described helical antenna is electrically connected with described radiant body microstrip line.
Wherein, described ground plate microstrip line, radiant body microstrip line lay respectively at the two sides of described PCB circuit board.
Perhaps, described ground plate microstrip line, radiant body microstrip line are positioned at the same side of described PCB circuit board, leave the gap between described ground plate microstrip line and the described radiant body microstrip line.
Further, the tail end of described helical antenna is fixedlyed connected with described PCB circuit board.
Further, the tail end of described helical antenna and described radiant body microstrip line welding.
Further, the wavelength of the resonance frequency correspondence of described microstrip antenna is λ
1, the resonance frequency correspondence of described helical antenna wavelength be λ
2, the length of described ground plate microstrip line is λ
2/ 4 multiply by the shortening coefficient of described PCB circuit board, and the length of described radiant body microstrip line is λ
1/ 4 multiply by the shortening coefficient of described PCB circuit board, and the junction of the inner wire of described coaxial line and described radiant body microstrip line is λ to the length on the top of helical antenna
2/ 4 odd-multiple multiply by the shortening coefficient of described PCB circuit board.
Further, described ground plate microstrip line be shaped as " Contraband " font, described radiant body microstrip line be shaped as " Ji " font, the opening direction of described ground plate microstrip line, radiant body microstrip line is respectively towards the two ends of described PCB circuit board, and the bottom of described ground plate microstrip line, radiant body microstrip line is parallel to each other.
Further, described radiant body microstrip line is extended with three arms from the bottom, and the inner wire of described coaxial line, the tail end of helical antenna are connected with the arm that is positioned at described radiant body microstrip line centre respectively.
Further, bottom one side of described radiant body microstrip line is provided with the adjutage that extends to described ground plate microstrip line direction, leaves the gap between described adjutage and the described ground plate microstrip line.
Further, described helical antenna comprises three sections, is respectively first straightway, cylindrical screw section, second straightway, and the length sum of described first straightway, second straightway is λ
2/ 4 even-multiple multiply by the shortening coefficient of described PCB circuit board, and the length of described cylindrical screw section is that length is λ
2/ 4 odd-multiple multiply by the shortening coefficient of described PCB circuit board.
The beneficial effects of the utility model are: a kind of multiband antenna, it comprises coaxial line, has different resonance microstrip antenna frequently, helical antenna, described microstrip antenna comprises the PCB circuit board, be arranged at the ground plate microstrip line of described PCB circuit board side, the radiant body microstrip line, the inner wire of described coaxial line is electrically connected with described radiant body microstrip line, the outer conductor of described coaxial line is electrically connected with described ground plate microstrip line, the tail end of described helical antenna is electrically connected with described radiant body microstrip line, microstrip antenna of the present utility model and helical antenna use ground plate microstrip line ground connection jointly, pass through coaxial feeding, make antenna can be operated in two frequency ranges, and helical antenna generally is used for low frequency, microstrip antenna generally is used for high frequency, thereby make two frequency ranges of antenna work differ bigger, have more performance.
Description of drawings
Fig. 1 is multiband antenna structural representation of the present utility model.
Description of reference numerals:
1---microstrip antenna 11---PCB circuit board
12---ground plate microstrip line 13---radiant body microstrip line
131---adjutage 2---helical antenna
21---first straightway 22---cylindrical screw section
23---second straightway 3---coaxial line
31---inner wire 32---outer conductor.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model being described in further detail, is not that practical range of the present utility model is limited to this.
As shown in Figure 1, the multiband antenna of present embodiment, it comprises coaxial line 3, has different resonance microstrip antenna 1, helical antenna 2 frequently, the resonance frequency of microstrip antenna 1, helical antenna 2 can be determined as required, as selecting 2.4GHZ for use, the operating frequency that communication equipments such as mobile phones such as 3.5GHZ, 5.8GHZ, router are commonly used.In the present embodiment, the resonance frequency of helical antenna 2 is 2.4GHZ, and the resonance frequency of microstrip antenna 1 is 5.8GHZ, and its frequency bandwidth is determined according to corresponding standard in the prior art.
Wherein, microstrip antenna 1 comprises PCB circuit board 11, is arranged at the ground plate microstrip line 12 of PCB circuit board 11 sides, radiant body microstrip line 13, the inner wire 31 of coaxial line 3 is electrically connected with radiant body microstrip line 13, the outer conductor 32 of coaxial line 3 is electrically connected with ground plate microstrip line 12, the tail end of helical antenna 2 is electrically connected with radiant body microstrip line 13, as shown in Figure 1, the PCB circuit board of present embodiment is rectangular slab, be of a size of 46mm * 8.2mm, in Fig. 1, PCB circuit board 11 is connected with other devices for convenience, and it is provided with the contraction flow region of narrowed width.The constriction coefficient of PCB circuit board 11 and its dielectric constant, thickness are relevant, and in the present embodiment, the scope of its constriction coefficient is 0.7-0.98.
Further, ground plate microstrip line 12, radiant body microstrip line 13 can lay respectively at the two sides of PCB circuit board 11.In the present embodiment, as shown in Figure 1, ground plate microstrip line 12, radiant body microstrip line 13 are positioned at the same side of PCB circuit board 11, leave the gap between ground plate microstrip line 12 and the radiant body microstrip line 13.
As shown in Figure 1, the tail end of helical antenna 2 and PCB circuit board 11 are fixedlyed connected by welding manner, " Ji " font radiant body microstrip line 13 is extended with three arms from the bottom, wherein Zhong Jian arm is provided with three solder joints, inner wire 31 welding of solder joint and the coaxial line 3 of bottom, two solder joints on top and the tail end (first straightway 21) of helical antenna 2 weld.
As indicated above, the resonance frequency of microstrip antenna 1, helical antenna 2 can determine as required that the wavelength of supposing the resonance frequency correspondence of microstrip antenna 1 is λ
1, the resonance frequency correspondence of helical antenna 2 wavelength be λ
2, the length of ground plate microstrip line 12 is λ
2/ 4 multiply by the shortening coefficient of PCB circuit board 11, and the length of radiant body microstrip line 13 is λ
1/ 4 multiply by the shortening coefficient of PCB circuit board 11, and the inner wire 31 of coaxial line 3 and the junction of radiant body microstrip line 13 are λ to the length on the top of helical antenna 2
2/ 4 odd-multiple multiply by the shortening coefficient of PCB circuit board 11.
Further, ground plate microstrip line 12 be shaped as " Contraband " font, radiant body microstrip line 13 be shaped as " Ji " font, the opening direction of ground plate microstrip line 12, radiant body microstrip line 13 is respectively towards the two ends of PCB circuit board 11, and the bottom of ground plate microstrip line 12, radiant body microstrip line 13 is parallel to each other.
For the impedance and coaxial line 3 couplings that make radiant body microstrip line 13, bottom one side of radiant body microstrip line 13 is provided with the adjutage 131 that extends to ground plate microstrip line 12 directions, leaves the gap between adjutage 131 and the ground plate microstrip line 12.
As shown in Figure 1, helical antenna 2 comprises three sections, and the length sum that is respectively first straightway 21, cylindrical screw section 22, second straightway, 23, the first straightways 21, second straightway 23 is λ
2/ 4 even-multiple multiply by the shortening coefficient of PCB circuit board 11, and the length of cylindrical screw section 22 is that length is λ
2/ 4 odd-multiple multiply by the shortening coefficient of PCB circuit board 11.
Should be noted that at last; above embodiment is only in order to illustrate the technical solution of the utility model; but not to the restriction of the utility model protection range; although with reference to preferred embodiment the utility model has been done to explain; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement the technical solution of the utility model, and not break away from essence and the scope of technical solutions of the utility model.
Claims (10)
1. multiband antenna, it is characterized in that: comprise coaxial line (3), has different resonance microstrip antenna (1) frequently, helical antenna (2), described microstrip antenna (1) comprises PCB circuit board (11), be arranged at the ground plate microstrip line (12) of described PCB circuit board (11) side, radiant body microstrip line (13), the inner wire (31) of described coaxial line (3) is electrically connected with described radiant body microstrip line (13), the outer conductor (32) of described coaxial line (3) is electrically connected with described ground plate microstrip line (12), and the tail end of described helical antenna (2) is electrically connected with described radiant body microstrip line (13).
2. multiband antenna according to claim 1, it is characterized in that: described ground plate microstrip line (12), radiant body microstrip line (13) lay respectively at the two sides of described PCB circuit board (11).
3. multiband antenna according to claim 1, it is characterized in that: described ground plate microstrip line (12), radiant body microstrip line (13) are positioned at the same side of described PCB circuit board (11), leave the gap between described ground plate microstrip line (12) and the described radiant body microstrip line (13).
4. according to claim 2 or 3 described multiband antennas, it is characterized in that: the tail end of described helical antenna (2) is fixedlyed connected with described PCB circuit board (11).
5. multiband antenna according to claim 4 is characterized in that: the tail end of described helical antenna (2) and described radiant body microstrip line (13) welding.
6. multiband antenna according to claim 4, it is characterized in that: the wavelength of the resonance frequency correspondence of described microstrip antenna (1) is λ
1, the resonance frequency correspondence of described helical antenna (2) wavelength be λ
2, the length of described ground plate microstrip line (12) is λ
2/ 4 multiply by the shortening coefficient of described PCB circuit board (11), and the length of described radiant body microstrip line (13) is λ
1/ 4 multiply by the shortening coefficient of described PCB circuit board (11), and the inner wire (31) of described coaxial line (3) and the junction of described radiant body microstrip line (13) are λ to the length on the top of helical antenna (2)
2/ 4 odd-multiple multiply by the shortening coefficient of described PCB circuit board (11).
7. multiband antenna according to claim 6, it is characterized in that: described ground plate microstrip line (12) be shaped as " Contraband " font, described radiant body microstrip line (13) be shaped as " Ji " font, the opening direction of described ground plate microstrip line (12), radiant body microstrip line (13) is respectively towards the two ends of described PCB circuit board (11), and the bottom of described ground plate microstrip line (12), radiant body microstrip line (13) is parallel to each other.
8. multiband antenna according to claim 7, it is characterized in that: described radiant body microstrip line (13) is extended with three arms from the bottom, and the inner wire (31) of described coaxial line (3), the tail end of helical antenna (2) are connected with the arm that is positioned at described radiant body microstrip line (13) centre respectively.
9. multiband antenna according to claim 7, it is characterized in that: bottom one side of described radiant body microstrip line (13) is provided with the adjutage (131) that extends to described ground plate microstrip line (12) direction, leaves the gap between described adjutage (131) and the described ground plate microstrip line (12).
10. multiband antenna according to claim 6, it is characterized in that: described helical antenna (2) comprises three sections, be respectively first straightway (21), cylindrical screw section (22), second straightway (23), the length sum of described first straightway (21), second straightway (23) is λ
2/ 4 even-multiple multiply by the shortening coefficient of described PCB circuit board (11), and the length of described cylindrical screw section (22) is that length is λ
2/ 4 odd-multiple multiply by the shortening coefficient of described PCB circuit board (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320174244 CN203205546U (en) | 2013-04-09 | 2013-04-09 | Multiband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320174244 CN203205546U (en) | 2013-04-09 | 2013-04-09 | Multiband antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203205546U true CN203205546U (en) | 2013-09-18 |
Family
ID=49149616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320174244 Expired - Lifetime CN203205546U (en) | 2013-04-09 | 2013-04-09 | Multiband antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203205546U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935977A (en) * | 2015-12-29 | 2017-07-07 | 海能达通信股份有限公司 | A kind of multiband aerial and communication device |
| CN109546330A (en) * | 2018-12-26 | 2019-03-29 | 东莞市仁丰电子科技有限公司 | A kind of feedback antenna of double frequency three of integrated combiner |
-
2013
- 2013-04-09 CN CN 201320174244 patent/CN203205546U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935977A (en) * | 2015-12-29 | 2017-07-07 | 海能达通信股份有限公司 | A kind of multiband aerial and communication device |
| CN109546330A (en) * | 2018-12-26 | 2019-03-29 | 东莞市仁丰电子科技有限公司 | A kind of feedback antenna of double frequency three of integrated combiner |
| CN109546330B (en) * | 2018-12-26 | 2024-03-15 | 东莞市仁丰电子科技有限公司 | Dual-frequency triple-fed antenna of integrated combiner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |
|
| CX01 | Expiry of patent term | ||
| IP01 | Partial invalidation of patent right |
Commission number: 5W120672 Conclusion of examination: Declare partial invalidity of utility model number 201320174244.2, and continue to maintain the validity of this patent on the basis of claims 7-9 in the authorized announcement text of this patent Decision date of declaring invalidation: 20201231 Decision number of declaring invalidation: 47263 Denomination of utility model: Multi band antenna Granted publication date: 20130918 Patentee: DONGGUAN RENFENG ELECTRONIC SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| IP01 | Partial invalidation of patent right |