WO2016155129A1 - Planar antenna-type microwave sensor - Google Patents

Planar antenna-type microwave sensor Download PDF

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Publication number
WO2016155129A1
WO2016155129A1 PCT/CN2015/082013 CN2015082013W WO2016155129A1 WO 2016155129 A1 WO2016155129 A1 WO 2016155129A1 CN 2015082013 W CN2015082013 W CN 2015082013W WO 2016155129 A1 WO2016155129 A1 WO 2016155129A1
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WO
WIPO (PCT)
Prior art keywords
antenna
microwave
oscillating circuit
circuit board
board
Prior art date
Application number
PCT/CN2015/082013
Other languages
French (fr)
Chinese (zh)
Inventor
程亚兵
Original Assignee
深圳市海骏电子科技有限公司
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Application filed by 深圳市海骏电子科技有限公司 filed Critical 深圳市海骏电子科技有限公司
Publication of WO2016155129A1 publication Critical patent/WO2016155129A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source

Definitions

  • the utility model belongs to the field of wireless sensors, in particular to a planar antenna type microwave sensor.
  • a microwave sensor is a device or device that uses microwave characteristics to detect some physical quantity, including the presence of an object, motion speed, distance, and angle information.
  • the microwave emitted by the transmitting antenna will be absorbed or reflected when it encounters the measured object, so that the power changes. If the receiving antenna is used to receive the microwave passing through the measured object or reflected by the measured object, and convert it into an electrical signal. And then processed by the measurement circuit, the microwave detection is realized.
  • the microwave sensor can be divided into two types: reflective type and occlusion type.
  • the reflective microwave sensor measures by detecting the microwave power reflected by the measured object or the elapsed time interval. Usually, it can measure the position of the object, Parameters such as displacement and thickness.
  • the occlusion type microwave sensor determines whether there is a parameter such as the thickness and water content of the measured object or the measured object between the transmitting antenna and the receiving antenna by detecting the magnitude of the microwave power received by the receiving antenna.
  • the microwave sensor is usually composed of a microwave transmitter (ie, a microwave oscillator), a microwave antenna, and a microwave detector.
  • the microwave oscillator is a device for generating microwaves. Since the wavelength of the microwave is very short, that is, the frequency is very high (300 MHz to 300 GHz), the oscillation circuit has a very small inductance and capacitance, so that the microwave oscillator cannot be constituted by a common electron tube and a transistor.
  • the components constituting the microwave oscillator include a speed control tube, a magnetron or some solid state devices, and a small microwave oscillator can also adopt a body effect tube.
  • the oscillating signal generated by the microwave oscillator needs to be transmitted by the waveguide and transmitted through the antenna.
  • the common structure of the antenna includes a horn antenna, a parabolic antenna, a dielectric antenna and a slot antenna.
  • the existing microwave sensor structure is mostly made of high frequency plate and PP four lamination process, with large design size, complicated manufacturing process, long process cycle, high cost and low cost performance.
  • the existing microwave sensor is in the field of automatic induction control. In the field of automatic induction lighting control, when the microwave sensor is built in the LED lamp application, it will block the LED illumination angle, causing shadows and affecting the illumination effect of the LED lamp.
  • the utility model provides a planar antenna type microwave sensor, which comprises an oscillating circuit board, an antenna board, a pin header assembly and a metal shield cover.
  • the oscillating circuit board has an upper surface and a bottom surface, and the antenna board is fixed on the bottom surface of the oscillating circuit board and oscillates.
  • One side of the circuit board has a mounting portion, and the pin header assembly is engaged with the mounting portion of the oscillating circuit board, and the metal shield covers the upper surface of the oscillating circuit board.
  • the oscillating circuit board comprises an oscillating circuit board body, a microwave oscillator, an oscillating Schottky diode double balanced mixer and an IF Doppler signal output module, and the oscillating circuit board body has an upper surface and a bottom surface, and the microwave oscillator
  • the microwave Schottky diode double balanced mixer and the IF Doppler signal output module are all disposed on the upper surface of the oscillating circuit board body.
  • the microwave oscillator has an input end and an output end, and the input end of the microwave oscillator is connected to the power source.
  • the output of the microwave oscillator is simultaneously connected to the input end of the microwave Schottky diode double-balanced mixer and the antenna board, and the input end of the microwave Schottky diode double-balanced mixer is also connected to the antenna board, microwave Schottky
  • the output of the diode double balanced mixer is connected to the input of the IF Doppler signal output module.
  • the antenna board includes an antenna board body and a microwave transmitting/receiving antenna, and the microwave transmitting/receiving antenna is disposed on the antenna board body, the shape of the antenna board body is a stereo rectangular board, and the microwave transmitting/receiving antenna is a planar rectangular structure.
  • the microwave transmitting/receiving antenna has the functions of transmitting microwaves and receiving microwaves, and the antenna board structure is independently separated.
  • the antenna board is fixed on the bottom surface of the oscillating circuit board by SMD patching or metal wire bonding.
  • the structure of the antenna board is independent and separated, the design size is small, the manufacturing process is simple, the cycle is short, the cost is low, and the economic benefit is high.
  • FIG. 1 is a schematic structural view of a planar antenna type microwave sensor product of the present invention
  • FIG. 2 is a top plan view of a planar antenna type microwave sensor product structure of the present invention.
  • FIG. 3 is a front view showing the structure of a planar antenna type microwave sensor of the present invention.
  • FIG. 4 is a side view showing the structure of a planar antenna type microwave sensor of the present invention.
  • FIG. 5 is a schematic diagram of a connection structure of a planar antenna type microwave sensor according to the present invention.
  • FIG. 6 is a schematic structural view of a planar antenna type microwave sensor circuit of the present invention.
  • FIG. 7 is a structural diagram of a surface of an oscillating circuit board of a planar antenna type microwave sensor according to the present invention.
  • FIG. 8 is a bottom structural view of an oscillating circuit board of a planar antenna type microwave sensor according to the present invention.
  • FIG. 9 is an electromagnetic wave field intensity diagram of a planar antenna type microwave sensor of the present invention.
  • FIG. 1 is a schematic structural view of a planar antenna type microwave sensor product of the present invention, as shown in FIG. 2 , which is a top view of a planar antenna type microwave sensor product structure of the present invention, as shown in FIG. 3 , which is a utility model of the present invention.
  • the front view of the planar antenna type microwave sensor product structure, as shown in FIG. 4, is a side view of the planar antenna type microwave sensor product structure of the present invention.
  • the planar antenna type microwave sensor (100) of the present invention comprises: an oscillating circuit board (102), an antenna board (104), a pin header assembly (106) and a metal shield cover (108), and the oscillating circuit board (102) has an upper surface And a bottom surface, the antenna board (104) is fixed on the bottom surface of the oscillating circuit board (102), the oscillating circuit board (102) has a mounting portion on one side thereof, and the pin header assembly (106) is engaged with the mounting portion of the oscillating circuit board (102).
  • a metal shield (108) covers the upper surface of the oscillating circuit board (102).
  • FIG. 5 is a schematic diagram of a connection structure of a planar antenna type microwave sensor according to the present invention, as shown in FIG. 6 , which is a schematic structural diagram of a planar antenna type microwave sensor circuit of the present invention, as shown in FIG. 7 , which is a utility model of the present invention.
  • the surface structure diagram of the oscillating circuit board of the planar antenna type microwave sensor is shown in FIG. 8 , which is a bottom structure diagram of the oscillating circuit board of the planar antenna type microwave sensor of the present invention.
  • the oscillating circuit board comprises an oscillating circuit board body, a microwave oscillator, a microwave Schottky diode double balanced mixer and an IF Doppler signal output module, and the oscillating circuit board body has an upper surface and a bottom surface, a microwave oscillator and a microwave xiao
  • the special-radio double-balanced mixer and the IF Doppler signal output module are disposed on the upper surface of the oscillating circuit board body.
  • the microwave oscillator has an input end and an output end, and the input end of the microwave oscillator is connected to the power source, and the microwave oscillation
  • the output of the microwave Schottky diode double-balanced mixer is also connected to the antenna board.
  • the input of the microwave Schottky diode double-balanced mixer is also connected to the antenna board.
  • the microwave Schottky diode is double balanced.
  • the output of the mixer is connected to the input of the IF Doppler signal output module.
  • the oscillating circuit board body is a double-sided PCB board, the oscillating circuit board body type is a RO4003C high frequency board, the oscillating circuit board body is a three-dimensional rectangular board, and the oscillating circuit board body has a length of 21.5 mm and a width of 19 mm.
  • the thickness of the substrate is 0.3 mm, the dielectric constant of the oscillating circuit board body is 3.38, and the circuit design diameter of the oscillating circuit board body is ⁇ 17 mm, and the mounting portion of the oscillating circuit board body has a pin through hole and a pin through hole The number is three.
  • the microwave oscillator is a three-point capacitor oscillator.
  • the microwave oscillator includes a high frequency transistor, a microstrip inductor and a microstrip capacitor.
  • the inductance of the microstrip inductor copper foil is 1.6 ⁇ 1.9nH, and the capacitance of the microstrip capacitor copper foil is 0.25 ⁇ .
  • the microwave oscillator can generate an oscillating signal with a C-band frequency of 5.8 GHz.
  • the microwave Schottky diode double balanced mixer has a ring impedance with a ring resistance of 50 ⁇ .
  • the antenna board includes an antenna board body and a microwave transmitting/receiving antenna, the microwave transmitting/receiving antenna is disposed on the antenna board body, the antenna board body is a double-sided PCB board, and the antenna board body type is a RO4003C high frequency board, and the antenna
  • the shape of the plate body is a three-dimensional rectangular plate.
  • the length of the antenna plate body is 19 mm, the width is 13.5 mm, the substrate thickness is 0.832 mm, the dielectric constant of the antenna plate body is 3.38, and the antenna plate structure is independent and separated.
  • the antenna board is fixed on the bottom surface of the oscillating circuit board by SMD patching or metal wire bonding.
  • the microwave transmitting/receiving antenna is a planar rectangular structure, and the microwave transmitting/receiving antenna is designed as a rectangular antenna by using a PCB copper foil.
  • the rectangular antenna PCB copper foil has a length of 18.25 mm and a width of 12.8 mm, and the microwave transmitting/receiving antenna simultaneously has a transmitting microwave and Receiving microwave function, the microwave oscillator generates an oscillating signal of 5.8 GHz frequency, and outputs a microwave signal of 5.8 GHz frequency to a microwave transmitting/receiving rectangular antenna.
  • the microwave transmitting/receiving rectangular antenna receives The echo signal of the reflected frequency.
  • the pin header assembly includes a +5 VDC power input pin header, a GND reference pin header, and a signal output pin header, and the three pin headers are matched with the pin headers of the oscillating circuit board body assembly portion.
  • planar antenna type microwave sensor of the utility model is as follows:
  • the power supply is supplied to the microwave oscillator of the oscillating circuit board through the power input row, the microwave oscillator generates an oscillating signal of 5.8 GHz frequency, the oscillating signal is output to the microwave transmitting/receiving antenna of the antenna board, and the microwave signal of 5.8 GHz frequency is emitted, as shown in the figure 9 shows the electromagnetic wave field intensity map of the planar antenna type microwave sensor of the present invention.
  • the microwave transmitting/receiving antenna can receive the echo signal of the reflected frequency and the oscillation generated by the microwave oscillator.
  • the IF Doppler signal is output, and the IF Doppler signal is processed by the frequency selective amplifier and then validated by analog-to-digital conversion. Control signal.

Abstract

A planar antenna-type microwave sensor (100) comprises: an oscillating circuit board (102), an antenna board (104), a pin header component (106) and a metal shield cover (108), wherein the antenna board (104) is fixed on a bottom surface of the oscillating circuit board (102), the pin header component (106) is engaged with an assembling part of the oscillating circuit board (102), and the metal shield cover (108) covers on an upper surface of the oscillating circuit board (102). The oscillating circuit board (102) comprises an oscillating circuit board body, a microwave oscillator, a microwave Schottky diode double balanced mixer and an IF Doppler signal output module, and the antenna board (104) comprises an antenna board body and a microwave transmitting/receiving antenna. The structure of the antenna board (104) of the planar antenna-type microwave remote sensor (100) is independently separated and has a small design size, simple preparation processing, a short period, low costs and high economy effects.

Description

一种平面天线型微波传感器  Planar antenna type microwave sensor 技术领域Technical field
本实用新型属于无线传感器领域，尤其涉及一种平面天线型微波传感器。 The utility model belongs to the field of wireless sensors, in particular to a planar antenna type microwave sensor.
背景技术Background technique
微波传感器，是利用微波特性来检测一些物理量的器件或装置，包括感应物体的存在，运动速度，距离，角度信息。由发射天线发出的微波，遇到被测物体时将被吸收或反射，使功率发生变化，若利用接收天线接收通过被测物体或由被测物反射回来的微波，并将它转换成电信号，再由测量电路处理，就实现了微波检测。A microwave sensor is a device or device that uses microwave characteristics to detect some physical quantity, including the presence of an object, motion speed, distance, and angle information. The microwave emitted by the transmitting antenna will be absorbed or reflected when it encounters the measured object, so that the power changes. If the receiving antenna is used to receive the microwave passing through the measured object or reflected by the measured object, and convert it into an electrical signal. And then processed by the measurement circuit, the microwave detection is realized.
根据微波传感器的原理，微波传感器可以分为反射式和遮断式两类，反射式微波传感器是通过检测被测物反射回来的微波功率或经过的时间间隔来测量，通常它可以测量物体的位置、位移、厚度等参数。遮断式微波传感器是通过检测接收天线收到的微波功率大小来判断发射天线与接收天线之间有无被测物体或被测物体的厚度、含水量等参数的。According to the principle of the microwave sensor, the microwave sensor can be divided into two types: reflective type and occlusion type. The reflective microwave sensor measures by detecting the microwave power reflected by the measured object or the elapsed time interval. Usually, it can measure the position of the object, Parameters such as displacement and thickness. The occlusion type microwave sensor determines whether there is a parameter such as the thickness and water content of the measured object or the measured object between the transmitting antenna and the receiving antenna by detecting the magnitude of the microwave power received by the receiving antenna.
微波传感器通常由微波发射器（即微波振荡器）、微波天线及微波检测器三部分组成。微波振荡器是产生微波的装置，由于微波波长很短，即频率很高（300MHz~300GHz），要求振荡回路中具有非常微小的电感与电容，因此不能用普通的电子管与晶体管构成微波振荡器，构成微波振荡器的器件有调速管、磁控管或某些固态器件，小型微波振荡器也可以采用体效应管。有微波振荡器产生的振荡信号需要用波导管传输，并通过天线发射出去，天线的常见结构有喇叭形天线、抛物面天线、介质天线与缝隙天线等。The microwave sensor is usually composed of a microwave transmitter (ie, a microwave oscillator), a microwave antenna, and a microwave detector. The microwave oscillator is a device for generating microwaves. Since the wavelength of the microwave is very short, that is, the frequency is very high (300 MHz to 300 GHz), the oscillation circuit has a very small inductance and capacitance, so that the microwave oscillator cannot be constituted by a common electron tube and a transistor. The components constituting the microwave oscillator include a speed control tube, a magnetron or some solid state devices, and a small microwave oscillator can also adopt a body effect tube. The oscillating signal generated by the microwave oscillator needs to be transmitted by the waveguide and transmitted through the antenna. The common structure of the antenna includes a horn antenna, a parabolic antenna, a dielectric antenna and a slot antenna.
技术问题technical problem
现有的微波传感器结构，大多采用高频板材与PP四层压合工艺制作，设计尺寸较大，制作工艺复杂，工艺周期长，成本高，性价比低，现有的微波传感器在自动感应控制领域，如自动感应照明控制领域中，微波传感器内置于LED灯具应用时，会遮挡LED发光角度，造成阴影，影响LED灯具发光效果。 The existing microwave sensor structure is mostly made of high frequency plate and PP four lamination process, with large design size, complicated manufacturing process, long process cycle, high cost and low cost performance. The existing microwave sensor is in the field of automatic induction control. In the field of automatic induction lighting control, when the microwave sensor is built in the LED lamp application, it will block the LED illumination angle, causing shadows and affecting the illumination effect of the LED lamp.
技术解决方案Technical solution
为了解决现有微波传感器结构材料多，设计尺寸大，制作工艺复杂，工艺周期长，成本高的缺陷，需要一种新型微波传感器，结构简化，设计尺寸小，工艺简单，周期短，成本经济。In order to solve the defects of the existing microwave sensor structure materials, large design size, complicated manufacturing process, long process cycle and high cost, a novel microwave sensor is needed, the structure is simplified, the design size is small, the process is simple, the cycle is short, and the cost is economical.
本实用新型提供一种平面天线型微波传感器，包括：振荡电路板，天线板，排针组件以及金属屏蔽罩，振荡电路板具有上表面和底面，天线板固设于振荡电路板的底面，振荡电路板一侧具有装配部，排针组件与振荡电路板的装配部接合，金属屏蔽罩覆盖在振荡电路板的上表面。The utility model provides a planar antenna type microwave sensor, which comprises an oscillating circuit board, an antenna board, a pin header assembly and a metal shield cover. The oscillating circuit board has an upper surface and a bottom surface, and the antenna board is fixed on the bottom surface of the oscillating circuit board and oscillates. One side of the circuit board has a mounting portion, and the pin header assembly is engaged with the mounting portion of the oscillating circuit board, and the metal shield covers the upper surface of the oscillating circuit board.
进一步地，振荡电路板包括振荡电路板板体、微波振荡器、振荡肖特基二极管双平衡混频器和IF多普勒信号输出模块，振荡电路板板体具有上表面和底面，微波振荡器、微波肖特基二极管双平衡混频器和IF多普勒信号输出模块均设置于振荡电路板板体的上表面，微波振荡器具有输入端和输出端，微波振荡器的输入端与电源连接，微波振荡器的输出端同时与微波肖特基二极管双平衡混频器的输入端和天线板连接，微波肖特基二极管双平衡混频器的输入端还与天线板连接，微波肖特基二极管双平衡混频器的输出端与IF多普勒信号输出模块的输入端连接。Further, the oscillating circuit board comprises an oscillating circuit board body, a microwave oscillator, an oscillating Schottky diode double balanced mixer and an IF Doppler signal output module, and the oscillating circuit board body has an upper surface and a bottom surface, and the microwave oscillator The microwave Schottky diode double balanced mixer and the IF Doppler signal output module are all disposed on the upper surface of the oscillating circuit board body. The microwave oscillator has an input end and an output end, and the input end of the microwave oscillator is connected to the power source. The output of the microwave oscillator is simultaneously connected to the input end of the microwave Schottky diode double-balanced mixer and the antenna board, and the input end of the microwave Schottky diode double-balanced mixer is also connected to the antenna board, microwave Schottky The output of the diode double balanced mixer is connected to the input of the IF Doppler signal output module.
进一步地，天线板包括天线板板体和微波发射/接收天线，微波发射/接收天线设置于天线板板体上，天线板板体的形状为立体矩形板，微波发射/接收天线为平面矩形结构，微波发射/接收天线同时具有发射微波和接受微波的功能，天线板结构为独立分离式，天线板通过SMD贴片方式或金属导线焊接方式固设于振荡电路板的底面。Further, the antenna board includes an antenna board body and a microwave transmitting/receiving antenna, and the microwave transmitting/receiving antenna is disposed on the antenna board body, the shape of the antenna board body is a stereo rectangular board, and the microwave transmitting/receiving antenna is a planar rectangular structure. The microwave transmitting/receiving antenna has the functions of transmitting microwaves and receiving microwaves, and the antenna board structure is independently separated. The antenna board is fixed on the bottom surface of the oscillating circuit board by SMD patching or metal wire bonding.
有益效果Beneficial effect
应用本实用新型提供的平面天线型微波传感器，天线板结构为独立分离式，设计尺寸小，制作工艺简单，周期短，成本低，经济效益高。 By adopting the planar antenna type microwave sensor provided by the utility model, the structure of the antenna board is independent and separated, the design size is small, the manufacturing process is simple, the cycle is short, the cost is low, and the economic benefit is high.
附图说明DRAWINGS
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some implementations of the present invention. For example, other drawings may be obtained from those of ordinary skill in the art in light of the inventive work.
图1为本实用新型的平面天线型微波传感器产品结构示意图；1 is a schematic structural view of a planar antenna type microwave sensor product of the present invention;
图2为本实用新型的平面天线型微波传感器产品结构俯视图；2 is a top plan view of a planar antenna type microwave sensor product structure of the present invention;
图3为本实用新型的平面天线型微波传感器产品结构正视图；3 is a front view showing the structure of a planar antenna type microwave sensor of the present invention;
图4为本实用新型的平面天线型微波传感器产品结构侧视图；4 is a side view showing the structure of a planar antenna type microwave sensor of the present invention;
图5为本实用新型的平面天线型微波传感器连接结构示意图；5 is a schematic diagram of a connection structure of a planar antenna type microwave sensor according to the present invention;
图6为本实用新型的平面天线型微波传感器电路结构示意图；6 is a schematic structural view of a planar antenna type microwave sensor circuit of the present invention;
图7为本实用新型的平面天线型微波传感器的振荡电路板上表面结构图；7 is a structural diagram of a surface of an oscillating circuit board of a planar antenna type microwave sensor according to the present invention;
图8为本实用新型的平面天线型微波传感器的振荡电路板底面结构图；8 is a bottom structural view of an oscillating circuit board of a planar antenna type microwave sensor according to the present invention;
图9为本实用新型的平面天线型微波传感器电磁波场强图。9 is an electromagnetic wave field intensity diagram of a planar antenna type microwave sensor of the present invention.
本发明的实施方式Embodiments of the invention
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本实用新型保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
具体实施例Specific embodiment
如图1所示，为本实用新型的平面天线型微波传感器产品结构示意图，如图2所示，为本实用新型的平面天线型微波传感器产品结构俯视图，如图3所示，为本实用新型的平面天线型微波传感器产品结构正视图，如图4所示，为本实用新型的平面天线型微波传感器产品结构侧视图。FIG. 1 is a schematic structural view of a planar antenna type microwave sensor product of the present invention, as shown in FIG. 2 , which is a top view of a planar antenna type microwave sensor product structure of the present invention, as shown in FIG. 3 , which is a utility model of the present invention. The front view of the planar antenna type microwave sensor product structure, as shown in FIG. 4, is a side view of the planar antenna type microwave sensor product structure of the present invention.
本实用新型的平面天线型微波传感器（100）包括：振荡电路板（102），天线板（104），排针组件（106）以及金属屏蔽罩（108），振荡电路板（102）具有上表面和底面，天线板（104）固设于振荡电路板（102）的底面，振荡电路板（102）一侧具有装配部，排针组件（106）与振荡电路板（102）的装配部接合，金属屏蔽罩（108）覆盖在振荡电路板（102）的上表面。The planar antenna type microwave sensor (100) of the present invention comprises: an oscillating circuit board (102), an antenna board (104), a pin header assembly (106) and a metal shield cover (108), and the oscillating circuit board (102) has an upper surface And a bottom surface, the antenna board (104) is fixed on the bottom surface of the oscillating circuit board (102), the oscillating circuit board (102) has a mounting portion on one side thereof, and the pin header assembly (106) is engaged with the mounting portion of the oscillating circuit board (102). A metal shield (108) covers the upper surface of the oscillating circuit board (102).
如图5所示，为本实用新型的平面天线型微波传感器连接结构示意图，如图6所示，为本实用新型的平面天线型微波传感器电路结构示意图，如图7所示，为本实用新型的平面天线型微波传感器的振荡电路板上表面结构图，如图8所示，为本实用新型的平面天线型微波传感器的振荡电路板底面结构图。FIG. 5 is a schematic diagram of a connection structure of a planar antenna type microwave sensor according to the present invention, as shown in FIG. 6 , which is a schematic structural diagram of a planar antenna type microwave sensor circuit of the present invention, as shown in FIG. 7 , which is a utility model of the present invention. The surface structure diagram of the oscillating circuit board of the planar antenna type microwave sensor is shown in FIG. 8 , which is a bottom structure diagram of the oscillating circuit board of the planar antenna type microwave sensor of the present invention.
振荡电路板包括振荡电路板板体、微波振荡器、微波肖特基二极管双平衡混频器和IF多普勒信号输出模块，振荡电路板板体具有上表面和底面，微波振荡器、微波肖特基二极管双平衡混频器和IF多普勒信号输出模块均设置于振荡电路板板体的上表面，微波振荡器具有输入端和输出端，微波振荡器的输入端与电源连接，微波振荡器的输出端同时与微波肖特基二极管双平衡混频器的输入端和天线板连接，微波肖特基二极管双平衡混频器的输入端还与天线板连接，微波肖特基二极管双平衡混频器的输出端与IF多普勒信号输出模块的输入端连接。The oscillating circuit board comprises an oscillating circuit board body, a microwave oscillator, a microwave Schottky diode double balanced mixer and an IF Doppler signal output module, and the oscillating circuit board body has an upper surface and a bottom surface, a microwave oscillator and a microwave xiao The special-radio double-balanced mixer and the IF Doppler signal output module are disposed on the upper surface of the oscillating circuit board body. The microwave oscillator has an input end and an output end, and the input end of the microwave oscillator is connected to the power source, and the microwave oscillation The output of the microwave Schottky diode double-balanced mixer is also connected to the antenna board. The input of the microwave Schottky diode double-balanced mixer is also connected to the antenna board. The microwave Schottky diode is double balanced. The output of the mixer is connected to the input of the IF Doppler signal output module.
振荡电路板板体为双面PCB板，振荡电路板板体的型号为RO4003C高频板，振荡电路板板体的形状为立体矩形板，振荡电路板板体的长度为21.5mm，宽度为19mm，基材厚度为0.3mm，振荡电路板板体的介电常数为3.38，振荡电路板板体中电路设计直径为Φ17mm，振荡电路板板体的装配部具有排针通孔，排针通孔的数量为3个。The oscillating circuit board body is a double-sided PCB board, the oscillating circuit board body type is a RO4003C high frequency board, the oscillating circuit board body is a three-dimensional rectangular board, and the oscillating circuit board body has a length of 21.5 mm and a width of 19 mm. The thickness of the substrate is 0.3 mm, the dielectric constant of the oscillating circuit board body is 3.38, and the circuit design diameter of the oscillating circuit board body is Φ17 mm, and the mounting portion of the oscillating circuit board body has a pin through hole and a pin through hole The number is three.
微波振荡器为电容三点式振荡器，微波振荡器包括高频晶体管、微带电感和微带电容，微带电感铜箔的电感量为1.6~1.9nH，微带电容铜箔的电容量为0.25~0.29pF，微波振荡器可以产生C波段频率为5.8GHz的振荡信号。The microwave oscillator is a three-point capacitor oscillator. The microwave oscillator includes a high frequency transistor, a microstrip inductor and a microstrip capacitor. The inductance of the microstrip inductor copper foil is 1.6~1.9nH, and the capacitance of the microstrip capacitor copper foil is 0.25~. At 0.29pF, the microwave oscillator can generate an oscillating signal with a C-band frequency of 5.8 GHz.
微波肖特基二极管双平衡混频器具有环形阻抗，环形阻抗值为50Ω。The microwave Schottky diode double balanced mixer has a ring impedance with a ring resistance of 50 Ω.
天线板包括天线板板体和微波发射/接收天线，微波发射/接收天线设置于天线板板体上，天线板板体为双面PCB板，天线板板体的型号为RO4003C高频板，天线板板体的形状为立体矩形板，天线板板体的长度为19mm，宽度为13.5mm，基材厚度为0.832mm，天线板板体的介电常数为3.38，天线板结构为独立分离式，天线板通过SMD贴片方式或金属导线焊接方式固设于振荡电路板的底面。The antenna board includes an antenna board body and a microwave transmitting/receiving antenna, the microwave transmitting/receiving antenna is disposed on the antenna board body, the antenna board body is a double-sided PCB board, and the antenna board body type is a RO4003C high frequency board, and the antenna The shape of the plate body is a three-dimensional rectangular plate. The length of the antenna plate body is 19 mm, the width is 13.5 mm, the substrate thickness is 0.832 mm, the dielectric constant of the antenna plate body is 3.38, and the antenna plate structure is independent and separated. The antenna board is fixed on the bottom surface of the oscillating circuit board by SMD patching or metal wire bonding.
微波发射/接收天线为平面矩形结构，微波发射/接收天线采用PCB铜箔设计为矩形天线，矩形天线PCB铜箔的长度为18.25mm，宽度为12.8mm，微波发射/接收天线同时具有发射微波和接收微波的功能，微波振荡器产生5.8GHz频率的振荡信号，输出至微波发射/接收矩形天线发射出5.8GHz频率的微波信号，当探测到移动人体或物体时，微波发射/接收矩形天线接收到反射频率的回波信号。The microwave transmitting/receiving antenna is a planar rectangular structure, and the microwave transmitting/receiving antenna is designed as a rectangular antenna by using a PCB copper foil. The rectangular antenna PCB copper foil has a length of 18.25 mm and a width of 12.8 mm, and the microwave transmitting/receiving antenna simultaneously has a transmitting microwave and Receiving microwave function, the microwave oscillator generates an oscillating signal of 5.8 GHz frequency, and outputs a microwave signal of 5.8 GHz frequency to a microwave transmitting/receiving rectangular antenna. When a moving human body or object is detected, the microwave transmitting/receiving rectangular antenna receives The echo signal of the reflected frequency.
排针组件包括+5VDC电源输入排针、GND参考排针和信号输出排针，3个排针与振荡电路板板体装配部的排针通孔适配。The pin header assembly includes a +5 VDC power input pin header, a GND reference pin header, and a signal output pin header, and the three pin headers are matched with the pin headers of the oscillating circuit board body assembly portion.
本实用新型的平面天线型微波传感器工作原理：The working principle of the planar antenna type microwave sensor of the utility model is as follows:
电源通过电源输入排针对振荡电路板的微波振荡器供电，微波振荡器产生5.8GHz频率的振荡信号，振荡信号输出至天线板的微波发射/接收天线，并发射出5.8GHz频率的微波信号，如图9所示，为本实用新型的平面天线型微波传感器电磁波场强图，当探测到移动的人体或物体时，微波发射/接收天线可以接收到反射频率的回波信号，微波振荡器产生的振荡信号和回波信号输出至微波肖特基二极管双平衡混频器中进行差频处理后，输出IF多普勒信号，IF多普勒信号经过选频放大器处理后，通过模数转换得出有效的控制信号。The power supply is supplied to the microwave oscillator of the oscillating circuit board through the power input row, the microwave oscillator generates an oscillating signal of 5.8 GHz frequency, the oscillating signal is output to the microwave transmitting/receiving antenna of the antenna board, and the microwave signal of 5.8 GHz frequency is emitted, as shown in the figure 9 shows the electromagnetic wave field intensity map of the planar antenna type microwave sensor of the present invention. When a moving human body or object is detected, the microwave transmitting/receiving antenna can receive the echo signal of the reflected frequency and the oscillation generated by the microwave oscillator. After the signal and echo signals are output to the microwave Schottky diode double-balanced mixer for differential frequency processing, the IF Doppler signal is output, and the IF Doppler signal is processed by the frequency selective amplifier and then validated by analog-to-digital conversion. Control signal.
以上所述仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内，所作的任何修改、改进、等同替换等，均应包含在本实用新型的保护范围之内。The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, improvements, equivalents, etc., which are included in the spirit and principles of the present invention, should be included in Within the scope of protection of the present invention.

Claims (1)

  1. 1. 一种平面天线型微波传感器，包括：振荡电路板，天线板，排针组件以及金属屏蔽罩，所述振荡电路板具有上表面和底面，所述天线板固设于所述振荡电路板的底面，所述振荡电路板一侧具有装配部，所述排针组件与所述振荡电路板的装配部接合，所述金属屏蔽罩覆盖在所述振荡电路板的上表面；其特征在于，所述振荡电路板包括振荡电路板板体、微波振荡器、微波肖特基二极管双平衡混频器和IF多普勒信号输出模块，所述振荡电路板板体具有上表面和底面，所述微波振荡器、所述微波肖特基二极管双平衡混频器和所述IF多普勒信号输出模块均设置于所述振荡电路板板体的上表面，所述微波振荡器具有输入端和输出端，所述微波振荡器的输入端与电源连接，所述微波振荡器的输出端同时与所述微波肖特基二极管双平衡混频器的输入端和所述天线板连接，所述微波肖特基二极管双平衡混频器的输入端还与所述天线板连接，所述微波肖特基二极管双平衡混频器的输出端与所述IF多普勒信号输出模块的输入端连接。 1. A planar antenna type microwave sensor includes: an oscillating circuit board, an antenna board, a pin header assembly, and a metal shield, wherein the oscillating circuit board has an upper surface and a bottom surface, and the antenna board is fixed on a bottom surface of the oscillating circuit board The oscillating circuit board has a mounting portion on one side thereof, the pin header assembly is engaged with the mounting portion of the oscillating circuit board, and the metal shield covers the upper surface of the oscillating circuit board; The oscillating circuit board comprises an oscillating circuit board body, a microwave oscillator, a microwave Schottky diode double balanced mixer and an IF Doppler signal output module, wherein the oscillating circuit board body has an upper surface and a bottom surface, and the microwave oscillation The microwave Schottky diode double balanced mixer and the IF Doppler signal output module are both disposed on an upper surface of the oscillating circuit board body, and the microwave oscillator has an input end and an output end. An input end of the microwave oscillator is connected to a power source, and an output end of the microwave oscillator is simultaneously connected to an input end of the microwave Schottky diode double-balanced mixer and the antenna Connecting, the input end of the microwave Schottky diode double balanced mixer is further connected to the antenna board, the output of the microwave Schottky diode double balanced mixer and the IF Doppler signal output module The input is connected.
    2. 根据权利要求1所述的平面天线型微波传感器，其特征在于：所述振荡电路板板体为双面PCB板，所述振荡电路板板体的形状为立体矩形板，所述振荡电路板板体的长度为21.5mm，宽度为19mm，厚度为0.3mm，所述振荡电路板板体的介电常数为3.38，所述振荡电路板板体中电路设计直径为Φ17mm。2. The planar antenna type microwave sensor according to claim 1, wherein the oscillating circuit board body is a double-sided PCB board, and the oscillating circuit board body has a shape of a three-dimensional rectangular board, and the oscillating circuit board The length of the body is 21.5 mm, the width is 19 mm, the thickness is 0.3 mm, the dielectric constant of the oscillating circuit board body is 3.38, and the circuit design diameter of the oscillating circuit board body is Φ17 mm.
    3. 根据权利要求1所述的平面天线型微波传感器，其特征在于：所述微波振荡器包括高频晶体管、微带电感和微带电容，微带电感铜箔的电感量为1.6~1.9nH，微带电容铜箔的电容量为0.25~0.29pF。3. The planar antenna type microwave sensor according to claim 1, wherein the microwave oscillator comprises a high frequency transistor, a microstrip inductor and a microstrip capacitor, and the inductance of the microstrip inductor copper foil is 1.6 to 1.9 nH. Capacitor copper foil has a capacitance of 0.25~0.29pF.
    4. 根据权利要求1所述的平面天线型微波传感器，其特征在于：所述微波肖特基二极管双平衡混频器具有环形阻抗，所述微波肖特基二极管双平衡混频器的环形阻抗值为50Ω。4. The planar antenna type microwave sensor according to claim 1, wherein said microwave Schottky diode double balanced mixer has a ring impedance, and a ring impedance value of said microwave Schottky diode double balanced mixer 50Ω.
    5. 根据权利要求1所述的平面天线型微波传感器，其特征在于：所述天线板包括天线板板体和微波发射/接收天线，所述微波发射/接收天线设置于所述天线板板体上，所述天线板板体为双面PCB板，所述天线板板体的形状为立体矩形板，所述天线板板体的长度为19mm，宽度为13.5mm，厚度为0.832mm，所述天线板板体的介电常数为3.38。5. The planar antenna type microwave sensor according to claim 1, wherein the antenna board comprises an antenna board body and a microwave transmitting/receiving antenna, and the microwave transmitting/receiving antenna is disposed on the antenna board body. The antenna board body is a double-sided PCB board, and the antenna board body has a shape of a three-dimensional rectangular board, and the antenna board body has a length of 19 mm, a width of 13.5 mm, and a thickness of 0.832 mm, and the antenna board The dielectric constant of the plate is 3.38.
    6. 根据权利要求1所述的平面天线型微波传感器，其特征在于：所述天线板结构为独立分离式，所述天线板通过SMD贴片方式或金属导线焊接方式固设于所述振荡电路板的底面。6. The planar antenna type microwave sensor according to claim 1, wherein the antenna board structure is independently separated, and the antenna board is fixed to the oscillating circuit board by SMD patching or metal wire bonding. Bottom surface.
    7. 根据权利要求5所述的平面天线型微波传感器，其特征在于：所述微波发射/接收天线为平面矩形结构，所述微波发射/接收天线采用PCB铜箔设计为矩形天线，所述矩形天线PCB铜箔的长度为18.25mm，宽度为12.8mm。7. The planar antenna type microwave sensor according to claim 5, wherein the microwave transmitting/receiving antenna is a planar rectangular structure, and the microwave transmitting/receiving antenna is designed as a rectangular antenna using a PCB copper foil, and the rectangular antenna PCB The copper foil has a length of 18.25 mm and a width of 12.8 mm.
PCT/CN2015/082013 2015-03-30 2015-06-23 Planar antenna-type microwave sensor WO2016155129A1 (en)

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