CN202433533U - Micro microwave plane sensor - Google Patents
Micro microwave plane sensor Download PDFInfo
- Publication number
- CN202433533U CN202433533U CN2012200023739U CN201220002373U CN202433533U CN 202433533 U CN202433533 U CN 202433533U CN 2012200023739 U CN2012200023739 U CN 2012200023739U CN 201220002373 U CN201220002373 U CN 201220002373U CN 202433533 U CN202433533 U CN 202433533U
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Abstract
The utility model relates to a sensor, and in particular relates to a micro microwave plane sensor. The sensor consists of an upper layer and a lower layer, wherein the sensor upper layer is a circuit board; a rectangular microstrip antenna is arranged in the center of the upper layer of the circuit board; a bipolar junction transistor (BJT), a microstrip liquid crystal (LC) oscillation circuit, an oscillation circuit resistor, a microstrip fan-shaped capacitor, a microwave frequency mixing/detection two-phase diode, a great-wall shaped micro-strip line network, a coupling capacitor, a sensor power resistor, a first filter capacitor, a second filter capacitor, a third filter capacitor and a fan-shaped capacitor which are connected with one another in a matched mode are arranged on the bottom layer of the circuit board; a signal shielding shell is arranged on the sensor lower layer; devices on the bottom layer of the circuit board are positioned in the shielding shell; and a shielding body is arranged in the shielding shell and matched with the microstrip LC oscillation circuit and the BJT. The micro microwave plane sensor has a simple structure and is convenient to manufacture, relatively small in size, low in radiation power, radiation-less to human bodies, relatively high in detection sensitivity and relatively high in anti-interference performance, and an antenna wave beam is relatively wide.
Description
Technical field
The utility model relates to a kind of sensor, is specially a kind of miniature microwave planar sensor.
Background technology
Microwave remote sensor extensively is used for aspects such as automatically-controlled door, security product, illumination at present by people, be used for the mobile induced signal of human body, is characterized in that detection sensitivity is high; Anti-interference strong, still present employed microwave block of Doppler radar is made up of three parts usually, i.e. microwave oscillator, frequency mixer and conical antenna; In the production of products process, assemble again after three component processing respectively, such apparatus structure is complicated; Technological process is long, and the workpiece accuracy requirement is very high, and volume is huger; And the beam angle of electromagnetic horn is about about 60 degree, has dwindled the scope that product uses greatly.
The utility model content
To the problem that exists in the prior art, the purpose of the utility model is to provide a kind of technical scheme of miniature microwave planar sensor.
Described a kind of miniature microwave planar sensor; It is characterized in that: sensor is double-layer structure up and down; The sensor upper strata is a circuit board; Circuit board upper strata central authorities are provided with rectangular microstrip antenna; Rectangular microstrip antenna is provided with the signal coupling aperture; Be provided with power interface, ground connection interface and signal output interface in circuit board one side, the circuit board bottom is provided with the BJT bipolar transistor that is connected, little band LC oscillatory circuit, oscillatory circuit resistance, little fan-shaped electric capacity, microwave mixer/detection two-phase diode, Great Wall shape microstrip line network, coupling capacitance, probe power resistance, first filter capacitor, second filter capacitor, the 3rd filter capacitor and fan-shaped electric capacity be with; Sensor lower floor signalization shielding case, the device of circuit board bottom is arranged in shielding case, is provided with shield in the shielding case, and shield matches with little band LC oscillatory circuit, BJT bipolar transistor.
Described a kind of miniature microwave planar sensor is characterized in that described BJT bipolar transistor, little band LC oscillatory circuit, oscillatory circuit resistance and littlely is with fan-shaped electric capacity to constitute microwave oscillator.
Described a kind of miniature microwave planar sensor is characterized in that described microwave mixer/detection two-phase diode, Great Wall shape microstrip line network constitute microwave mixer.
Described a kind of miniature microwave planar sensor; It is characterized in that described BJT bipolar transistor, little band LC oscillatory circuit, oscillatory circuit resistance and littlely be with fan-shaped electric capacity to constitute microwave oscillator; Microwave mixer/detection two-phase diode, Great Wall shape microstrip line network constitute microwave mixer, and microwave oscillator and microwave mixer are of coupled connections through the 3rd filter capacitor.
Described a kind of miniature microwave planar sensor is characterized in that described coupling aperture links to each other with coupling capacitance, and coupling capacitance links to each other with microwave mixer.
Described a kind of miniature microwave planar sensor is characterized in that described little band LC oscillatory circuit intersects the microstrip line of structure and constitutes by being.
Described a kind of miniature microwave planar sensor, the length that it is characterized in that described circuit board is 30mm, wide is 15mm; The length of rectangular microstrip antenna is 26 mm, and wide is 11mm; The length of shielding case is 19 mm, and wide is 14 mm, and height is 3mm.
The utility model simple structure, easily manufactured, volume is less, and radiation power is low, and is radiationless to human body, and the antenna beamwidth broad can reach 180 degree, and detection sensitivity is higher, and anti-interference is stronger.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model circuit board bottom;
Fig. 2 is the utility model circuit board superstructure synoptic diagram;
Fig. 3 is the structural representation of the utility model shielding case;
Fig. 4 is the circuit block diagram of the utility model;
Among the figure: 1-circuit board, 2-coupling aperture, 3-signal output interface, 4-ground connection interface, 5-power interface; The 6-shielding case, 7-shield, the fan-shaped electric capacity of 8-, 9-Great Wall shape microstrip line network, 10-microwave mixer/detection two-phase diode; 11-the 3rd filter capacitor, little fan-shaped electric capacity, 13-oscillatory circuit resistance, the little band of 14-LC oscillatory circuit, the 15-BJT bipolar transistor be with of 12-; 16-probe power resistance, 17-first filter capacitor, 18-coupling capacitance, 19-microwave oscillator, 20-microwave mixer; 21-signal IF, 22-rectangular microstrip antenna, 23-second filter capacitor, 24-ground plane.
Embodiment
Below in conjunction with Figure of description the utility model is further specified:
A kind of miniature microwave planar sensor, sensor are double-layer structure up and down, and the sensor upper strata is a circuit board 1, and the length of circuit board 1 is 30mm, and wide is 15mm; Be provided with ground plane 24 around the circuit board 1, circuit board 1 upper strata central authorities are provided with rectangular microstrip antenna 22, and the length of rectangular microstrip antenna is 26 mm, and wide is 11mm; Rectangular microstrip antenna 22 is provided with signal coupling aperture 2; Be provided with power interface 5, ground connection interface 4 and signal output interface 3 in circuit board 1 one sides; Circuit board 1 bottom is provided with the BJT bipolar transistor 15 that is connected, little band LC oscillatory circuit 14, oscillatory circuit resistance 13, little fan-shaped electric capacity 12, microwave mixer/detection two-phase diode 10, Great Wall shape microstrip line network 9, coupling capacitance 18, probe power resistance 16, first filter capacitor 17, second filter capacitor 23, the 3rd filter capacitor 11, fan-shaped electric capacity 8 be with, and can connect through microstrip line between each device; Sensor lower floor signalization shielding case 6, the length of shielding case are 19 mm, and wide is 14 mm; Height is 3mm; The device of circuit board 1 bottom is arranged in shielding case 6, is provided with shield 7 in the shielding case 6, and shield 7 matches with little band LC oscillatory circuit 14, BJT bipolar transistor 15.
Wherein, Little band LC oscillatory circuit intersects the microstrip line of structure and constitutes by being; BJT bipolar transistor 15, little band LC oscillatory circuit 14, oscillatory circuit resistance 13 and littlely be with fan-shaped electric capacity 12 to constitute microwave oscillators 19; Microwave mixer/detection two-phase diode 10, Great Wall shape microstrip line network 9 constitute microwave mixer 20; Microwave oscillator 19 is of coupled connections through the 3rd filter capacitor 11 with microwave mixer 20, and the signal coupling aperture 2 that is arranged on the rectangular microstrip antenna 22 links to each other with coupling capacitance 18, and coupling capacitance 18 and microwave mixer 20 link to each other through microstrip line.
Principle of work: microwave oscillator 19 produces microwave signal, enters into microwave mixer 20 through the 3rd filter capacitor 11, the clutter filtering that microwave mixer 20 is outer with emission band; Wave band is controlled at the metastable scope of setting, passes through fan-shaped electric capacity 8 and coupling capacitance 18 then, through rectangular microstrip antenna 22 outside directional transmissions microwave signals; When object moves in its investigative range; Rectangular microstrip antenna 22 receives the microwave signal of returning, and this signal produces a low-frequency signal IF21 through after coupling capacitance 18, fan-shaped electric capacity 8 and microwave mixer 20 detections; Signal IF21 is by output interface 3 outputs, and this signal can react the motion of object.
The utility model simple structure, easily manufactured, volume is less, and radiation power is low, and is radiationless to human body, and the antenna beamwidth broad can reach 180 degree, and detection sensitivity is higher, and anti-interference is stronger.
Claims (7)
1. miniature microwave planar sensor; It is characterized in that: sensor is double-layer structure up and down; The sensor upper strata is a circuit board; Circuit board upper strata central authorities are provided with rectangular microstrip antenna; Rectangular microstrip antenna is provided with the signal coupling aperture; Be provided with power interface, ground connection interface and signal output interface in circuit board one side, the circuit board bottom is provided with the BJT bipolar transistor that is connected, little band LC oscillatory circuit, oscillatory circuit resistance, little fan-shaped electric capacity, microwave mixer/detection two-phase diode, Great Wall shape microstrip line network, coupling capacitance, probe power resistance, first filter capacitor, second filter capacitor, the 3rd filter capacitor and fan-shaped electric capacity be with; Sensor lower floor signalization shielding case, the device of circuit board bottom is arranged in shielding case, is provided with shield in the shielding case, and shield matches with little band LC oscillatory circuit, BJT bipolar transistor.
2. a kind of miniature microwave planar sensor according to claim 1 is characterized in that described BJT bipolar transistor, little band LC oscillatory circuit, oscillatory circuit resistance and littlely is with fan-shaped electric capacity to constitute microwave oscillator.
3. a kind of miniature microwave planar sensor according to claim 1 is characterized in that described microwave mixer/detection two-phase diode, Great Wall shape microstrip line network constitute microwave mixer.
4. a kind of miniature microwave planar sensor according to claim 1; It is characterized in that described BJT bipolar transistor, little band LC oscillatory circuit, oscillatory circuit resistance and littlely be with fan-shaped electric capacity to constitute microwave oscillator; Microwave mixer/detection two-phase diode, Great Wall shape microstrip line network constitute microwave mixer, and microwave oscillator and microwave mixer are of coupled connections through the 3rd filter capacitor.
5. a kind of miniature microwave planar sensor according to claim 4 is characterized in that described coupling aperture links to each other with coupling capacitance, and coupling capacitance links to each other with microwave mixer.
6. according to claim 1 or 2 or 4 described a kind of miniature microwave planar sensors, it is characterized in that described little band LC oscillatory circuit intersects the microstrip line of structure and constitutes by being.
7. a kind of miniature microwave planar sensor according to claim 1, the length that it is characterized in that described circuit board is 30mm, wide is 15mm; The length of rectangular microstrip antenna is 26 mm, and wide is 11mm; The length of shielding case is 19 mm, and wide is 14 mm, and height is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200023739U CN202433533U (en) | 2012-01-05 | 2012-01-05 | Micro microwave plane sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200023739U CN202433533U (en) | 2012-01-05 | 2012-01-05 | Micro microwave plane sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202433533U true CN202433533U (en) | 2012-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200023739U Expired - Lifetime CN202433533U (en) | 2012-01-05 | 2012-01-05 | Micro microwave plane sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202433533U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169502A1 (en) * | 2013-04-19 | 2014-10-23 | 深圳市海骏电子科技有限公司 | Planar antenna microwave module and intelligent control energy-saving light |
| WO2016119680A1 (en) * | 2015-01-26 | 2016-08-04 | 东莞巨扬电器有限公司 | Microwave sensing antenna module |
| WO2016119681A1 (en) * | 2015-01-26 | 2016-08-04 | 东莞巨扬电器有限公司 | Microwave sensing antenna module |
| WO2016155129A1 (en) * | 2015-03-30 | 2016-10-06 | 深圳市海骏电子科技有限公司 | Planar antenna-type microwave sensor |
| CN107765223A (en) * | 2017-09-25 | 2018-03-06 | 中山市尊宝实业有限公司 | Beam radar launches and reception system |
| CN108134180A (en) * | 2018-01-22 | 2018-06-08 | 宁波市乐星感应电器有限公司 | A kind of micro-strip flat plane antenna sensor |
| CN108346848A (en) * | 2018-02-10 | 2018-07-31 | 瑞德探测技术（深圳）有限公司 | Microwave transmitting and receiving antenna, control module, Intelligent lamp and method for manufacturing antenna |
| CN109143176A (en) * | 2018-10-12 | 2019-01-04 | 深圳市易探科技有限公司 | A kind of 5.8GHz single-transistor microwave motion sensor |
| CN112467376A (en) * | 2018-06-11 | 2021-03-09 | 深圳迈睿智能科技有限公司 | Antenna with interference-free setting and method for producing the same |
-
2012
- 2012-01-05 CN CN2012200023739U patent/CN202433533U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9722302B2 (en) | 2013-04-19 | 2017-08-01 | Hytronik Electronics Co., Ltd | Planar antenna microwave module |
| WO2014169502A1 (en) * | 2013-04-19 | 2014-10-23 | 深圳市海骏电子科技有限公司 | Planar antenna microwave module and intelligent control energy-saving light |
| WO2016119680A1 (en) * | 2015-01-26 | 2016-08-04 | 东莞巨扬电器有限公司 | Microwave sensing antenna module |
| WO2016119681A1 (en) * | 2015-01-26 | 2016-08-04 | 东莞巨扬电器有限公司 | Microwave sensing antenna module |
| WO2016155129A1 (en) * | 2015-03-30 | 2016-10-06 | 深圳市海骏电子科技有限公司 | Planar antenna-type microwave sensor |
| CN107765223B (en) * | 2017-09-25 | 2021-03-23 | 中山市尊宝实业有限公司 | Directional radar transmitting and receiving system |
| CN107765223A (en) * | 2017-09-25 | 2018-03-06 | 中山市尊宝实业有限公司 | Beam radar launches and reception system |
| CN108134180A (en) * | 2018-01-22 | 2018-06-08 | 宁波市乐星感应电器有限公司 | A kind of micro-strip flat plane antenna sensor |
| CN108346848A (en) * | 2018-02-10 | 2018-07-31 | 瑞德探测技术（深圳）有限公司 | Microwave transmitting and receiving antenna, control module, Intelligent lamp and method for manufacturing antenna |
| CN108346848B (en) * | 2018-02-10 | 2024-04-16 | 深圳市全智芯科技有限公司 | Microwave receiving and transmitting antenna, control module, intelligent lamp and antenna manufacturing method |
| CN112467376A (en) * | 2018-06-11 | 2021-03-09 | 深圳迈睿智能科技有限公司 | Antenna with interference-free setting and method for producing the same |
| CN112467376B (en) * | 2018-06-11 | 2024-02-27 | 深圳迈睿智能科技有限公司 | Antenna with anti-interference arrangement and method for manufacturing the same |
| CN109143176A (en) * | 2018-10-12 | 2019-01-04 | 深圳市易探科技有限公司 | A kind of 5.8GHz single-transistor microwave motion sensor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120912 |
|
| CX01 | Expiry of patent term |