CN103746174B - Plate carries the 510MHz radio-frequency module of PCB antenna - Google Patents
Plate carries the 510MHz radio-frequency module of PCB antenna Download PDFInfo
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- CN103746174B CN103746174B CN201310740095.6A CN201310740095A CN103746174B CN 103746174 B CN103746174 B CN 103746174B CN 201310740095 A CN201310740095 A CN 201310740095A CN 103746174 B CN103746174 B CN 103746174B
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Abstract
The present invention relates to a kind of PCB, particularly relate to the 510MHz radio-frequency module that a kind of plate carries PCB antenna.Plate of the present invention carries the 510MHz radio-frequency module of PCB antenna, comprise PCB substrate, PCB substrate is provided with radio-frequency (RF) receiving and transmission module, balanced-unbalanced circuit, antenna, antenna gain module, radio-frequency (RF) receiving and transmission module passes through balanced-unbalanced circuit and antenna gain model calling, antenna gain model calling antenna.Pcb board of the present invention carries the radio frequency antenna module of 510MHz, and change number of unit, realize different gains, this antenna has the features such as efficiency is high, stable and reliable for performance, cost is low.
Description
Technical field
The present invention relates to a kind of PCB, particularly relate to the 510MHz radio-frequency module that a kind of plate carries PCB antenna.
Background technology
PCB(PrintedCircuitBoard, printed circuit board (PCB)) effect generally comprises: 1. the mechanical support that the various electronic devices and components such as integrated circuit are fixed, assembled is provided; 2. realize wiring between the various electronic devices and components such as integrated circuit and electrical connection (Signal transmissions) or electric insulation.There is provided required electrical characteristic, as characteristic impedance etc.
Antenna is a kind of transducer.During transmitting, it is converted into spatial electromagnetic ripple the high-frequency current of transmitter; During reception, it is converted to high-frequency current the electromagnetic wave intercepted and captured from space again and sends into receiver.Design one is applied to small-power, the short-distance wireless transceiver of wireless sense network or active RFID type, Antenna Design is pith wherein.Good antenna system can make communication distance reach optimum state.The kind of antenna is a lot, and in the radio system lower than 1GHz frequency, conventional antenna system comprises spring antenna, bar antenna, directional antenna, Yagi antenna and PCB antenna etc.Present employing PCB printed panel (printed circuit board (PCB)) is as in radiative unit structure, it adopts solid plane oscillator arms, there is following problem: gain is on the low side, bandwidth is partially narrow, section is higher, third order intermodulation index is undesirable, these problems cause the communication quality in service area to can not get ensureing.
The leading indicator weighing antenna performance is antenna directivity parameter and antenna gain parameter, wherein: direction parameter represents different antennas different directional diagrams, for representing the degree of their concentrated radiations, the acuity of directional diagram, our incoming direction parameter.Desirable point source aerial radiation does not have directivity, and in all directions, radiation intensity is equal, and direction is a spheroid.We compare using desirable some source antenna as standard and actual antennas, and the ratio resulting from square E02 of the electric field strength that the electric field strength square E2 of certain point and desirable some source antenna produce in same point at identical radiant power antenna is called the direction parameter D=E2/E02 of this point.
Antenna gain: gain and directivity factor are both the parameter characterizing radiant power intensity, but both are not quite similar again.Gain is discussed under same power output condition, and directivity factor is discussed under same radiant power condition.Unequal due to the radiation intensity of antenna all directions, directivity factor and the gain of antenna change along with the difference of point of observation, but its variation tendency is consistent.Usually, in actual applications, the directivity factor in greatest irradiation direction and gain is got as the directivity factor of antenna and gain.
In small-power, short-range wireless sense network system or active RFID system, because the volume of product is little, need the Antenna Design that an individual system is little, cheap, communication distance is far away as far as possible, in above-mentioned antenna system, volume is little, cost of manufacture is low for PCB antenna, but communication distance is generally less than other antenna.
Summary of the invention
Technique effect of the present invention can overcome above-mentioned defect, and provide the 510MHz radio-frequency module that a kind of plate carries PCB antenna, it effectively increases antenna gain, improves the communication distance of radio-frequency module in wireless sense network and active RFID system.
For achieving the above object, the present invention adopts following technical scheme: it comprises PCB substrate, PCB substrate is provided with radio-frequency (RF) receiving and transmission module, balanced-unbalanced circuit, antenna, antenna gain module, radio-frequency (RF) receiving and transmission module passes through balanced-unbalanced circuit and antenna gain model calling, antenna gain model calling antenna.
Balanced-unbalanced circuit (is again Ba Lun Balun, the English transliteration of balanced-to-unblanced transformer), principle is by antenna theory, dipole antenna belongs to balanced type antenna, and coaxial cable belongs to uneven transmission now, if it is directly connected, then the crust of coaxial cable just has high-frequency current to flow through (by co-axial cables transport principle, high-frequency current should in cable internal flow, crust is screen, there is no electric current), so, the radiation (screen that can be imagined as cable also take part in the radiation of electric wave) of antenna will be affected therefore, balun will be added between antenna and cable, the current choke flowing into cable shield outside is fallen, that is the high-frequency current flowing through cable shield crust from oscillator is blocked.
Preferably, antenna gain module is crescent sheet metal, and crescent sheet metal copper content is greater than 90%.
The computational methods of wavelength: frequency=velocity of wave/wavelength, velocity of wave is the light velocity: 300000000m/s, and frequency is 510MHz, then wavelength equals 0.5882 meter.
The outer arc radius of crescent sheet metal is 0.919cm, and the angle between outer arc two-end-point is 56.5 °, and the inner arc radius of crescent sheet metal is 2.35cm, and the maximum ga(u)ge between outer arc and inner arc is 0.09cm.
Radius extended line through crescent sheet metal outer arc center and the angle between the radius extended line at crescent sheet metal inner arc center are 28.2 °.
The extrados of crescent sheet metal protrudes from PCB substrate plane and perpendicular to PCB substrate plane; The inner arc of crescent sheet metal is attached in PCB substrate plane.The bottom surface of crescent sheet metal is laid in PCB substrate, protrudes from PCB substrate and rounding off between another side inner arc and outer arc.
Described radio-frequency (RF) receiving and transmission module adopts TICC1100E model.
Pcb board of the present invention carries the radio frequency antenna module of 510MHz, and change number of unit, realize different gains, this antenna has the features such as efficiency is high, stable and reliable for performance, cost is low.By increasing the assembly of a low cost, effectively increasing antenna gain, improving the communication distance of radio-frequency module in wireless sense network and active RFID system.Effective property symmetrically improving the direction, far field of PCB antenna, and the adjustment capability possessed by obtaining from the parameter adjustment of coupled zone loading cabling antenna frequencies, size, gain, direction, thus be suitable for the portable terminal layout requirements changeable to built-in antenna complex better.
Accompanying drawing explanation
Fig. 1 is modular structure schematic diagram of the present invention;
Fig. 2 is gain module structural representation of the present invention.
In figure: 1-crescent sheet metal; 2-inner arc; 3-outer arc.
Embodiment
As shown in Figure 1, the radio frequency antenna module that pcb board of the present invention carries 510MHz comprises PCB substrate, PCB substrate is provided with radio-frequency (RF) receiving and transmission module, balanced-unbalanced circuit, antenna, antenna gain module, radio-frequency (RF) receiving and transmission module passes through balanced-unbalanced circuit and antenna gain model calling, antenna gain model calling antenna.
As shown in Figure 2, antenna gain module is crescent sheet metal 1, and its copper content is greater than 90%.
The outer arc radius of crescent sheet metal 1 is 0.919cm, and the angle between outer arc two-end-point is 56.5 °, and the inner arc radius of crescent sheet metal is 2.35cm, and the maximum ga(u)ge between outer arc and inner arc is 0.09cm.
Radius extended line through crescent sheet metal 1 outer arc center and the angle between the radius extended line at crescent sheet metal inner arc center are 28.2 °.
The extrados of crescent sheet metal 1 protrudes from PCB substrate plane and perpendicular to PCB substrate plane; The inner arc of crescent sheet metal 1 is attached in PCB substrate plane.The bottom surface of crescent sheet metal 1 is laid in PCB substrate, protrudes from PCB substrate and rounding off between another side inner arc 2 and outer arc 3.
Described radio-frequency (RF) receiving and transmission module adopts TICC1100E model.
Embodiment 1
In storage active RFID recognition system, each warehouse is generally divided into goods laydown area and passageway, fork truck can be allowed in passageway to pass through, and the radio-frequency module that fork truck is installed can communicate with carry radio-frequency module on every part goods, realizes quick counting and the function of looking for goods; Before not implementing the present invention, radio-frequency module on fork truck in passageway can only communicate with the radio-frequency module of the carry within 20m on goods, after adopting technical scheme of the present invention, because antenna gain increases, effectively add communication distance, the radio-frequency module that fork truck is installed can communicate with the module within 30m, makes this system can adapt to larger and higher warehouse.
Embodiment 2
In the RFID recognition system of campus student location, student wears the school badge comprising radio-frequency module, fixing radio-frequency module is installed in campus context, by the communication between 2 modules, the residing position of student can be determined, before not implementing the present invention, installation radio-frequency module is needed at the every 50m of corridor, after enforcement technical scheme of the present invention, the antenna gain comprising the school badge of radio-frequency module worn due to student increases, can communicate with farther stuck-module, therefore in corridor, only need 75m to increase installation radio-frequency module, effectively reduce cost.
Claims (3)
1. a plate carries the 510MHz radio-frequency module of PCB antenna, comprise PCB substrate, it is characterized in that, PCB substrate is provided with radio-frequency (RF) receiving and transmission module, balanced-unbalanced circuit, antenna, antenna gain module, radio-frequency (RF) receiving and transmission module passes through balanced-unbalanced circuit and antenna gain model calling, antenna gain model calling antenna; Antenna gain module is crescent sheet metal (1), the outer arc radius of crescent sheet metal (1) is 0.919cm, angle between outer arc two-end-point is 56.5 °, the inner arc radius of crescent sheet metal is 2.35cm, maximum ga(u)ge between outer arc and inner arc is 0.09cm, radius extended line through crescent sheet metal outer arc center and the angle between the radius extended line at crescent sheet metal inner arc center are 28.2 °, and the extrados of crescent sheet metal (1) protrudes from PCB substrate plane and perpendicular to PCB substrate plane; The inner arc of crescent sheet metal (1) is attached in PCB substrate plane, the bottom surface of crescent sheet metal (1) is laid in PCB substrate, protrudes from PCB substrate and rounding off between another side inner arc (2) and outer arc (3).
2. plate according to claim 1 carries the 510MHz radio-frequency module of PCB antenna, it is characterized in that, crescent sheet metal (1) copper content is greater than 90%.
3. plate according to claim 1 carries the 510MHz radio-frequency module of PCB antenna, it is characterized in that, radio-frequency (RF) receiving and transmission module adopts TICC1100E model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310740095.6A CN103746174B (en) | 2013-12-27 | 2013-12-27 | Plate carries the 510MHz radio-frequency module of PCB antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310740095.6A CN103746174B (en) | 2013-12-27 | 2013-12-27 | Plate carries the 510MHz radio-frequency module of PCB antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103746174A CN103746174A (en) | 2014-04-23 |
| CN103746174B true CN103746174B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310740095.6A Active CN103746174B (en) | 2013-12-27 | 2013-12-27 | Plate carries the 510MHz radio-frequency module of PCB antenna |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201163660Y (en) * | 2008-02-22 | 2008-12-10 | 深圳市远望谷信息技术股份有限公司 | Integration antenna |
| CN102394384A (en) * | 2011-07-19 | 2012-03-28 | 惠州Tcl移动通信有限公司 | Mobile equipment, mobile phone and antenna structure thereof |
| CN202888401U (en) * | 2012-05-23 | 2013-04-17 | 西北工业大学 | Low-cost broadband vertical polarized UHF waveband antenna capable of restricting space installation |
-
2013
- 2013-12-27 CN CN201310740095.6A patent/CN103746174B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201163660Y (en) * | 2008-02-22 | 2008-12-10 | 深圳市远望谷信息技术股份有限公司 | Integration antenna |
| CN102394384A (en) * | 2011-07-19 | 2012-03-28 | 惠州Tcl移动通信有限公司 | Mobile equipment, mobile phone and antenna structure thereof |
| CN202888401U (en) * | 2012-05-23 | 2013-04-17 | 西北工业大学 | Low-cost broadband vertical polarized UHF waveband antenna capable of restricting space installation |
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| Publication number | Publication date |
|---|---|
| CN103746174A (en) | 2014-04-23 |
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Effective date of registration: 20180706 Address after: 518000 Yuexing three road, Yuehai street, Nanshan District, Shenzhen, Guangdong No. 401-402, room B, Shenzhen Research Institute, Huazhong University of Science and Technology, Shenzhen 9 Patentee after: This motive objects networking technology Co., Ltd of continent, Shenzhen Address before: 266071 software industrial base, 288 Ningxia Road, Shinan District, Qingdao, Shandong. Patentee before: Qingdao Zhongke Software Co.,Ltd. |