CN205141132U - PCB board antenna of ultrabroad band - Google Patents
PCB board antenna of ultrabroad band Download PDFInfo
- Publication number
- CN205141132U CN205141132U CN201520937821.8U CN201520937821U CN205141132U CN 205141132 U CN205141132 U CN 205141132U CN 201520937821 U CN201520937821 U CN 201520937821U CN 205141132 U CN205141132 U CN 205141132U
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- pcb board
- transmission line
- plum blossom
- valve structure
- radiating surface
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Abstract
The utility model discloses a PCB board antenna of ultrabroad band, including two -sided type PCB board, set up in the half -wave radiator of two sets of symmetries of PCB board, connect the transmission line between two sets of half -wave radiators, the center department of this transmission line sets up a balancedunbalanced converter, this balancedunbalanced converter includes the main part, set up first in this main part one end, and secondly, third plum blossom lamella structure, set up in the fourth plum blossom lamella structure of the main part other end, be close to firstly, and secondly, the position of third plum blossom lamella structure is equipped with the coaxial cable distributing point, this coaxial cable distributing point is connected with the transmission line, the coaxial cable distributing point is 14 wavelength to the distance at transmission line center. Through this kind of design, the impedance match of PCB board antenna is better, and the standing -wave ratio is low, has reduced debug time, has improved production efficiency, the frequency band broad has covered each frequency channel from DCS to 4G -LTE, has satisfied the demand of different frequency channel operators, has improved market competitiveness of the product.
Description
Technical field
The utility model relates to field of antenna technology, refers in particular to a kind of pcb board antenna of ultrabroad band.
Background technology
Oscillator on many pcb board antennas and transmission line are symmetrical, and therefore electric current is also symmetrical, balance, but the current balance type of symmetrical pcb board antenna and feed structure closely related.For the symmetrical dipole of pcb board antenna, if use two-conductor line feed, then current balance type, if but the problem of current imbalance just may be there is with coaxial feeding, the imbalance of electric current can affect the impedance matching property of antenna, and coaxial cable feed, owing to having portion of electrical current to the outer surface of coaxial line, therefore needs to adopt balance and imbalance converter, make the imbalance of pcb board antenna become balance, thus reach the conjugate impedance match of antenna impedance.
The feed of traditional pcb board antenna, central point feed often on pcb board on transmission line, because the location comparison of distributing point is near oscillator end points, the impedance of antenna can become large, coaxial feeding is owing to having portion of electrical current to the outer surface of coaxial line simultaneously, pcb board antenna and coaxial line are difficult to form impedance matching, and the frequency band of antenna is narrow, standing wave ratio.
In general, existing pcb board antenna has following shortcoming:
1, impedance matching is poor, and standing-wave ratio is high, to need on the transmission line on pcb board antenna matching and debugging again, adds the debug time of antenna.
2, frequency band is narrower, existing pcb board antenna, and frequency band is narrower, can not meet the demand of the multiband operators such as DCS, pcs system, 3G system, WIFI and LTE, 4G system, lacks the market competitiveness.
3, the frequency band of small part pcb board antenna can meet, but standing-wave ratio is often very poor, reaches about 2.0, and the use reception of antenna on equipment is very poor, is difficult to meet the demand of current telecom operators at different frequency range.
Utility model content
In view of this, the utility model is for the disappearance of prior art existence, and its main purpose is to provide a kind of pcb board antenna of ultrabroad band, and impedance matching is better, and standing-wave ratio is low, decreases debug time, improves production efficiency; Frequency band is wider, covers each frequency range from DCS to 4G-LTE, meets the demand of different frequency range operator, improve the competitiveness of product in market.
For achieving the above object, the utility model adopts following technical scheme:
A kind of pcb board antenna of ultrabroad band, comprise double-side type pcb board, be arranged at the half-wave dipole of two groups of symmetries of pcb board, transmission line is connected between two groups of half-wave dipoles, the center of this transmission line arranges a balun, this balun comprises main part, be arranged at first of this main part one end, second, 3rd plum blossom valve structure, be arranged at the 4th plum blossom valve structure of the main part other end, near first, second, the position of the 3rd plum blossom valve structure is provided with coaxial cable feed point, this coaxial cable feed point is connected with transmission line, coaxial cable feed point is 1/4 wavelength to the distance of center of transmission line.
As the orderly scheme of one, in described balun, first and the 4th length A between plum blossom valve structure is between 27.8 ~ 29.6mm, second and the 4th length B between plum blossom valve structure is between 35.1 ~ 36.9mm, the length C of the second plum blossom valve structure is between 12.6 ~ 14.mm, the length D of the first to the 3rd plum blossom valve structure is between 27.4 ~ 29.3mm, and the length E of the 4th plum blossom valve structure is between 7.8 ~ 9.6mm; The R angular radius R1 of the first plum blossom valve structure is between 2.3 ~ 3.2mm, the R angular radius R2 of the second plum blossom valve structure is between 6.3 ~ 7.8mm, the R angular radius R3 of the 3rd plum blossom valve structure is between 2.3 ~ 3.2mm, and the R angular radius R4 of the 4th plum blossom valve structure is between 3.6 ~ 4.5mm.
As the orderly scheme of one, the FR4 match plate of described pcb board to be thickness be 1.5mm, the structure of pcb board is square shape.
As the orderly scheme of one, the half-wave dipole at the described pcb board back side comprises the left side radiating surface of rectangle, the right side radiating surface of rectangle, same one end of this left and right radiating surface connects the first transmission line, the central vertical of this first transmission line extends the second transmission line, and this second transmission line and left and right radiating surface are positioned at the same side of the first transmission line.
As the orderly scheme of one, the half-wave dipole in described pcb board front comprises the left side radiating surface of rectangle, the right side radiating surface of rectangle, same one end of this left and right radiating surface connects the 3rd transmission line, the center of the 3rd transmission line arranges described balun, this balun is positioned at the side of the 3rd transmission line, and this left and right radiating surface is positioned at the opposite side of the 3rd transmission line.
The utility model compared with prior art has obvious advantage and beneficial effect, specifically, as shown from the above technical solution:
1, the common double-sided PCB board of Fr4 is used, with low cost, make simple, be easy to large-scale production; Only need one man operation during welding, just can settle at one go, make the efficiency of welding operation high, greatly increase production efficiency, also improve the quality of product simultaneously.
2, the balun at feed place adopts and has 4 designs with the plum blossom lobe face shaping of arc shape, and impedance matching is good, and standing-wave ratio is low, decreases debug time, in process of producing product, improve production efficiency.
3, the different feeding classification of feed method is adopted, distributing point is not the central point feed on pcb board on transmission line, but at the close base drive having the balancedunbalanced adaption converter of the plum petal shape of 4 arc shapes, central point distance on distributing point to pcb board on transmission line is about 1/4 wavelength, make product bandwidth, compensate for the deficiency that antenna frequency band of the same type is narrow, the demand of the telecom equipment vendor of different frequency range can be met.
For more clearly setting forth architectural feature of the present utility model and effect, below in conjunction with accompanying drawing and specific embodiment, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is that the structure of the embodiment of the utility model is always schemed.
Fig. 2 is the Facad structure figure of the pcb board antenna of the embodiment of the utility model.
Fig. 3 is the structure figure of the pcb board antenna of the embodiment of the utility model.
Fig. 4 is the structure chart of the balun of the pcb board antenna of the embodiment of the utility model.
Fig. 5 is the test standing wave pattern of the embodiment of the utility model.
Accompanying drawing identifier declaration:
10, pcb board 11, front
12, the back side 21, half-wave dipole (front)
211, left side radiating surface (front) 212, right side radiating surface (front)
213, the 3rd transmission line 22, half-wave dipole (back side)
221, left side radiating surface (back side) 222, right side radiating surface (back side)
223, the first transmission line 224, second transmission line
30, balun 31, main part
32, the first plum blossom valve structure 33, second plum blossom valve structure
34, the 3rd plum blossom valve structure 35, the 4th plum blossom valve structure
40, distributing point.
Embodiment
Please refer to shown in Fig. 1 to Fig. 5, that show the concrete structure of the preferred embodiment of the utility model, it is a kind of pcb board antenna of ultrabroad band, its structure comprises pcb board 10, is arranged at the half-wave dipole 21,22 of two groups of symmetries of pcb board 10, connect transmission line (comprising 223,224,213) between two groups of half-wave dipoles 21,22, the center of this transmission line arranges a balun 30.
Wherein, pcb board 10 is that the common match plate of FR4 being 1.5mm by thickness is made.Its structure is square shape, mainly comprises front 11 and face, 12 two, the back side.Front 11 and the back side 12 of pcb board antenna are the radiating surface of antenna oscillator, and the transmission line of the inside forms the half-wave dipole 21,22 of two groups of symmetries, and all the other are side, and side does not have transmission line, the front 11 of pcb board antenna and the connecting hole at the back side 12 are power feed hole, and object makes the feed place of pcb board antenna effectively can be connected conducting with coaxial cable, two groups of symmetrical half-wave dipoles are then formed after the oscillator feed at front 11 and the back side 12, by the size and shape of change pcb board 10 transmission line and the spacing of transmission line, feed coupling place adopts the balancedunbalanced impedance matching transformer of the profile size of irregularly shaped (the present embodiment refers to multi-disc plum petal shape) to obtain the good unit for electrical property parameters of antenna, therefore, in the manufacturing process of pcb board antenna, when the electrical performance indexes such as directional diagram of antenna is not normally deteriorated, how to make the frequency band of pcb board antenna wider, it is the technological difficulties of this product that impedance is mated more.The impedance matching aspect with antenna widened by the frequency band that is provided in of the pcb board antenna of the utility model ultrabroad band, is obviously better than general pcb board antenna.
Specifically, as shown in Figure 2, in the present embodiment, the half-wave dipole 22 at the back side 12 of described pcb board 10 comprises the left side radiating surface 221 of rectangle, the right side radiating surface 222 of rectangle, same one end of this left and right radiating surface 221,222 connects the first transmission line 223, the central vertical of this first transmission line 223 extends the second transmission line 224, and this second transmission line 224 and left and right radiating surface 221,222 are positioned at the same side of the first transmission line 223.As shown in Figure 3, the half-wave dipole 21 in described pcb board 10 front 11 comprises the left side radiating surface 211 of rectangle, the right side radiating surface 212 of rectangle, same one end of this left and right radiating surface 211,212 connects the 3rd transmission line 213, the center of the 3rd transmission line 213 arranges described balun 30, this balun 30 is positioned at the side of the 3rd transmission line 213, and this left and right radiating surface 211,212 is positioned at the opposite side of the 3rd transmission line 213.
As shown in Figure 4, this balun 30 comprises main part 31, be arranged at first of this main part 31 one end, second, 3rd plum blossom valve structure 32, 33, 34, be arranged at the 4th plum blossom valve structure 35 of main part 31 other end, near first, second, 3rd plum blossom valve structure 32, 33, the position of 34 is provided with coaxial cable feed point 40, this coaxial cable feed point 40 is connected with transmission line (specifically referring to the second transmission line 224), coaxial cable feed point 40 is 1/4 wavelength to the distance (specifically pointing to the distance of the first transmission line 223 mid point) of center of transmission line.
In described balun 30, first and the 4th length A between plum blossom valve structure 32,35 is between 27.8 ~ 29.6mm, second and the 4th length B between plum blossom valve structure 33,35 is between 35.1 ~ 36.9mm, the length C of the second plum blossom valve structure 33 is between 12.6 ~ 14.5mm, the length D of the first to the 3rd plum blossom valve structure 32,34 is between 27.4 ~ 29.3mm, and the length E of the 4th plum blossom valve structure 35 is between 7.8 ~ 9.6mm; The R angular radius R1 of the first plum blossom valve structure 32 is between 2.3 ~ 3.2mm, the R angular radius R2 of the second plum blossom valve structure 33 is between 6.3 ~ 7.8mm, the R angular radius R3 of the 3rd plum blossom valve structure 34 is between 2.3 ~ 3.2mm, and the R angular radius R4 of the 4th plum blossom valve structure 35 is between 3.6 ~ 4.5mm.
Ultrabroad band pcb board antenna of the present utility model, center on pcb board on transmission line is designed to balun 30 feed, in order to reach good electrical performance indexes and good impedance matching in effective space, the balun 30 at feed place adopts 4 designs with the plum blossom lobe face shaping of arc shape, adopt the different feeding classification of feed method in addition, distributing point 40 is not the central point feed on pcb board on transmission line, but at the close base drive having the balancedunbalanced adaption converter of the plum petal shape of 4 arc shapes, central point distance on distributing point 40 to pcb board on transmission line is about 1/4 wavelength.
Feed place adopts this balancedunbalanced to change adaptation, both can increase bandwidth, also serves the effect of coupled resonance in the coupling of impedance simultaneously.Make the imbalance of electric current become balance, form broadband, the characteristic of low standing wave, thus the conjugate impedance match reaching antenna impedance, as shown in Figure 5.
Ultrabroad band pcb board antenna of the present utility model via the repeatedly amendment of AnsoftHFSS simulation calculation to sample, performance adjustment and perfect, finally by the verification test of instrument, prove this pcb board antenna bandwidth, standing-wave ratio is low; Frequency range can from 1710-2700MHz, standing-wave ratio is less than 1.5, as shown in Figure 5, covers from DCS frequency range, PCS frequency range and 3G (Third Generation) Moblie TD-SCDMA frequency range, WCDMA frequency range, CDMA2000 frequency range, each frequency ranges such as the WIFI of wireless access and digital transmission system, and each frequency range such as forth generation mobile communication TD-LTE, meet the demand of different frequency range operator, improve the competitiveness of product in market, prove that this pcb board antenna is truly feasible.
In sum, design focal point of the present utility model is:
1, the common double-sided PCB board 10 of Fr4 is used, with low cost, make simple, be easy to large-scale production; Only need one man operation during welding, just can settle at one go, make the efficiency of welding operation high, greatly increase production efficiency, also improve the quality of product simultaneously.
2, the balun 30 at feed place adopts and has 4 designs with the plum blossom lobe face shaping of arc shape, and impedance matching is good, and standing-wave ratio is low, decreases debug time, in process of producing product, improve production efficiency.
3, the different feeding classification of feed method is adopted, distributing point 40 is not the central point feed on pcb board on transmission line, but at the close base drive having the balancedunbalanced adaption converter of the plum petal shape of 4 arc shapes, central point distance on distributing point 40 to pcb board on transmission line is about 1/4 wavelength, make product bandwidth, compensate for the deficiency that antenna frequency band of the same type is narrow, the demand of the telecom equipment vendor of different frequency range can be met.
The above, it is only preferred embodiment of the present utility model, not technical scope of the present utility model is imposed any restrictions, therefore every above embodiment is done according to technical spirit of the present utility model any trickle amendment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (5)
1. the pcb board antenna of a ultrabroad band, comprise double-side type pcb board, be arranged at the half-wave dipole of two groups of symmetries of pcb board, transmission line is connected between two groups of half-wave dipoles, the center of this transmission line arranges a balun, it is characterized in that: this balun comprises main part, be arranged at first of this main part one end, second, 3rd plum blossom valve structure, be arranged at the 4th plum blossom valve structure of the main part other end, near first, second, the position of the 3rd plum blossom valve structure is provided with coaxial cable feed point, this coaxial cable feed point is connected with transmission line, coaxial cable feed point is 1/4 wavelength to the distance of center of transmission line.
2. the pcb board antenna of a kind of ultrabroad band according to claim 1, it is characterized in that: in described balun, first and the 4th length A between plum blossom valve structure is between 27.8 ~ 29.6mm, second and the 4th length B between plum blossom valve structure is between 35.1 ~ 36.9mm, the length C of the second plum blossom valve structure is between 12.6 ~ 14.mm, the length D of the first to the 3rd plum blossom valve structure is between 27.4 ~ 29.3mm, and the length E of the 4th plum blossom valve structure is between 7.8 ~ 9.6mm; The R angular radius R1 of the first plum blossom valve structure is between 2.3 ~ 3.2mm, the R angular radius R2 of the second plum blossom valve structure is between 6.3 ~ 7.8mm, the R angular radius R3 of the 3rd plum blossom valve structure is between 2.3 ~ 3.2mm, and the R angular radius R4 of the 4th plum blossom valve structure is between 3.6 ~ 4.5mm.
3. the pcb board antenna of a kind of ultrabroad band according to claim 1, is characterized in that: the FR4 match plate of described pcb board to be thickness be 1.5mm, the structure of pcb board is square shape.
4. the pcb board antenna of a kind of ultrabroad band according to claim 1, it is characterized in that: the half-wave dipole at the described pcb board back side comprises the right side radiating surface of the left side radiating surface of rectangle, rectangle, same one end of this left and right radiating surface connects the first transmission line, the central vertical of this first transmission line extends the second transmission line, and this second transmission line and left and right radiating surface are positioned at the same side of the first transmission line.
5. the pcb board antenna of a kind of ultrabroad band according to claim 1, it is characterized in that: the half-wave dipole in described pcb board front comprises the right side radiating surface of the left side radiating surface of rectangle, rectangle, same one end of this left and right radiating surface connects the 3rd transmission line, the center of the 3rd transmission line arranges described balun, this balun is positioned at the side of the 3rd transmission line, and this left and right radiating surface is positioned at the opposite side of the 3rd transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520937821.8U CN205141132U (en) | 2015-11-23 | 2015-11-23 | PCB board antenna of ultrabroad band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520937821.8U CN205141132U (en) | 2015-11-23 | 2015-11-23 | PCB board antenna of ultrabroad band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205141132U true CN205141132U (en) | 2016-04-06 |
Family
ID=55626891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520937821.8U Expired - Fee Related CN205141132U (en) | 2015-11-23 | 2015-11-23 | PCB board antenna of ultrabroad band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205141132U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207438A (en) * | 2016-08-26 | 2016-12-07 | 良特电子科技(东莞)有限公司 | Forth generation high-gain wideband LTE built-in aerial and constructive method |
| CN113314814A (en) * | 2021-05-21 | 2021-08-27 | 京信通信技术(广州)有限公司 | Phase shifter and base station antenna |
-
2015
- 2015-11-23 CN CN201520937821.8U patent/CN205141132U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207438A (en) * | 2016-08-26 | 2016-12-07 | 良特电子科技(东莞)有限公司 | Forth generation high-gain wideband LTE built-in aerial and constructive method |
| CN106207438B (en) * | 2016-08-26 | 2023-01-06 | 良特电子科技(东莞)有限公司 | Fourth-generation high-gain broadband LTE built-in antenna and construction method |
| CN113314814A (en) * | 2021-05-21 | 2021-08-27 | 京信通信技术(广州)有限公司 | Phase shifter and base station antenna |
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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 |
Granted publication date: 20160406 Termination date: 20201123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |