CN210992635U

CN210992635U - Microwave acupuncture radiator

Info

Publication number: CN210992635U
Application number: CN201921331035.8U
Authority: CN
Inventors: 刘中一
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-07-14
Anticipated expiration: 2029-08-16

Abstract

The utility model relates to a microwave acupuncture radiator, include the metal shield cover and set up in the microwave antenna of the uncovered department of metal shield cover, microwave antenna is for being rectangle heliciform microstrip line, and the parameter of microstrip line is one of the following two: the wire length is 180mm, the line width is 0.4mm, and the resistance is 0.35 omega +/-0.05 omega; the line length is 95mm, the line width is 0.2mm, and the resistance is 0.35 omega +/-0.05 omega. The parameter of microwave ceramic printed board and microstrip line is in the radiator the utility model discloses a key technology directly influences the performance index of antenna. The utility model provides a two group's parameters correspond central frequency respectively and do: 433MHz and 915 MHz. This microwave antenna is the narrowband design, and the standing-wave ratio is little, and the performance is high, consequently requires lowly to power, can realize that the high efficiency is miniaturized, is the microwave body surface radiator of size minimum in the like product in the world range up to now, makes the utility model discloses some narrow acupuncture points department on limbs are placed more easily to the radiator, more are fit for microwave acupuncture and moxibustion and use.

Description

Microwave acupuncture radiator

Technical Field

The utility model relates to a microwave acupuncture radiator, especially a body surface does not have wound formula microwave radiator, can be used to acupuncture, thermotherapy etc..

Background

The traditional Chinese medicine acupuncture and moxibustion is from ancient times and has a long history, and is a treasure in the traditional Chinese medicine. The traditional Chinese medicine acupuncture has been used for treating diseases for thousands of years, and acupuncture has good curative effect and no side effect and is accepted all over the world.

The microwave refers to electromagnetic waves with the wavelength of 1 mm-1000 mm and the frequency of 300 MHz-300 GHz. The microwave technology is a new technology developed in the twentieth century, and is widely applied to various fields such as communication, aerospace, medical treatment and the like at present. Due to the heat effect of the microwave and the non-heat effect of biochemistry, microwave physiotherapy, microwave surgery and microwave acupuncture and moxibustion achieve very obvious effects in the medical field.

The microwave radiator is designed to ensure that the radiator normally and effectively works, and the bandwidth of the radiator is more than or equal to the working frequency range of the microwave source. In the Chinese patent application CN1295872A, the bandwidth of the radiator is more than or equal to the working frequency (50 MHz-3000 MHz) of the microwave source, and the bandwidth of the radiator of the wi79440 and wzy type microwave acupuncture instrument is more than or equal to the working frequency (500 MHz-900 MHz) of the microwave source. The wider the radiator bandwidth, the less efficient it is to radiate microwave energy. To meet the normal therapeutic requirements, the output power of the microwave source is greatly increased, and the power consumption of the power supply is also greatly increased, thereby increasing the volume and the cost. Because of the large volume of the radiator, it is not suitable to be placed on some narrow acupuncture points of the limb for thermotherapy, such as the acupuncture points of Hegu, Hexi, etc.

In addition, in the chinese patent application CN1295872A, the operating frequency of microwave radiation is not at the 433MHz, 915MHz, and 2450MHz frequency points allocated by the international radio regulatory commission to medical use, and interferes with navigation, communication, TV, and the like, which violates the regulations of the international radio regulatory commission.

Through search, the chinese patent application CN 105213174 a discloses a microwave acupuncture and moxibustion therapeutic apparatus, which includes a radiator for transmitting microwave signals to a treatment site of a patient. The radiator comprises a shell, a circuit board and a transmitting head for transmitting microwave, wherein one end of the transmitting head is arranged on the shell, and the other end of the transmitting head is connected with an inner conductor of a high-frequency coaxial cable; the circuit board, the transmitting head, the reflecting plate and the radiator shell form a cluster microwave radiator. The radiator is a broadband radiator, which is bulky and inefficient, and the above-mentioned problems are not yet solved.

The prior art is known as microwave acupuncture and moxibustion, and the radiator has large volume and is not suitable for the treatment of narrow and small acupuncture points of a human body.

Disclosure of Invention

The technical problem to be solved by the utility model is to overcome the above-mentioned shortcoming of prior art, provide a microwave radiator, for a narrowband radiator, small efficient is particularly suitable for the treatment at acupuncture point.

In order to solve the technical problem, the utility model provides a microwave acupuncture radiator, include open metal shield cover and set up in the microwave antenna of the uncovered department of metal shield cover, microwave antenna is for being rectangle heliciform microstrip line, the parameter of microstrip line is one of the following two:

parameter A: the working frequency is 433 MHz;

line length range: 180mm ± 1mm, line width range: 0.4mm ± 0.05mm, resistance range: 0.35 Ω ± 0.05 Ω, line spacing range: 0.6mm plus or minus 0.05 mm;

and B, parameter B: the working frequency is 915 MHz;

line length range: 95mm + -1 mm, line width range: 0.2mm ± 0.05mm, resistance range: 0.35 Ω ± 0.05 Ω, line spacing range: 0.4mm +/-0.05 mm.

Further, the parameter a is preferably:

wire length: 180mm, line width: 0.4mm, resistance range: 0.35 omega +/-0.05 omega, 7.3 circles of microstrip rectangular spiral winding are arranged, and the distance between adjacent microstrip lines is as follows: 0.6 mm;

preferred parameters of B are:

wire length: 95mm, line width: 0.2mm, resistance range: 0.35 omega +/-0.05 omega, 6.5 circles of microstrip rectangular spiral winding are arranged, and the distance between adjacent microstrip lines is as follows: 0.4 mm. The utility model discloses a pass through the energy of microwave source the utility model discloses a radiator radiates on the corresponding acupuncture point of human disease treatment, the produced physics thermal effect of amazing treatment acupuncture point, biochemical non-thermal effect and acupuncture point effect play the dual efficiency at traditional metal acupuncture and the warm acupuncture point of moxa-moxibustion, and the acupuncture that mediation qi and blood, balanced yin and yang, right resistance and eliminate the evil and reach mediation main and collateral channels "the pain then is not logical, the expert then is not painful" treats the disease purpose.

The parameter of microwave ceramic printed board and microstrip line is in the radiator the utility model discloses a key technology directly influences the performance index of antenna. The inventor has carried out many years's research and experiment, has finally obtained the utility model provides a two group's parameters correspond central frequency respectively and are: 433MHz and 915 MHz. This microwave antenna is the narrowband design, and the standing-wave ratio is little, and the performance is high, consequently requires lowly to power, can realize that the high efficiency is miniaturized, is the microwave body surface radiator of size minimum in the like product in the world range up to now, makes the utility model discloses some narrow acupuncture points department on limbs are placed more easily to the radiator, more are fit for microwave acupuncture and moxibustion and use.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a top view of a metallic shield of a microwave applicator according to an embodiment.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a front view of a PCB board of a microwave radiator according to an embodiment.

Fig. 4 is a rear view of a PCB board of a microwave radiator according to an embodiment.

Fig. 5 is a top view of the metal shield of the microwave radiator according to the second embodiment.

Fig. 6 is a sectional view a-a of fig. 5.

Fig. 7 is a front view of a PCB board of a microwave radiator according to an embodiment.

Fig. 8 is a rear view of a PCB board of a microwave radiator according to an embodiment.

Figure 9 is a graph of the radiator standing wave ratio of a microwave radiator according to one embodiment.

Figure 10 is a graph of the standing wave ratio of the radiators of the second embodiment.

The numbers in the figures are as follows:

1-a shielding cover, 2-a screw hole, 3-an opening, 4-a cavity, 5-a feeder line through hole, 6-a microwave antenna and 7-a front grounding metal ring; 8-first pad, 9-second pad, 10-back ground metal ring, 11-metalized via; 12-metalized via, 13-PCB, 14-via.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

Example one

As shown in FIGS. 1-4, this embodiment is a schematic diagram of a microwave acupuncture radiator with a center frequency of 433 MHz. The microwave acupuncture radiator comprises an open metal shielding case 1 and a PCB (dielectric substrate made of microwave dielectric ceramics) 13 fixed at an open part 3 of the metal shielding case through a screw, wherein a microwave antenna 6 is arranged on the front surface of the PCB 13, and the microwave antenna 6 is a rectangular spiral microstrip line. The back or the side of the metal shielding case 1 is provided with a feeder line through hole 5 for a coaxial cable to pass through, and an inner conductor of the coaxial cable is electrically connected with the center of the microwave antenna 6. Specifically, in this embodiment, the first pad 8 is disposed at the center of the back surface of the PCB 13, the first pad 8 is electrically connected to the center of the microwave antenna 6 through the metalized through hole 12, and the inner conductor of the coaxial cable is soldered to the first pad 8, thereby implementing the present invention. The outer conductor of the coaxial cable is electrically connected to the distal end of the microwave antenna, thereby achieving electrical connection of the inner conductor of the coaxial cable to the center of the microwave antenna 6. The outer conductor of the coaxial cable is electrically connected to the distal end of the microwave antenna 6. Specifically, in this embodiment, the

grounding metal rings

7 and 10 are disposed on the periphery of the front and back surfaces of the PCB 13, the front grounding metal ring 7 and the back grounding metal ring 10 are electrically connected through the metalized through hole 11, the second pad 9 connected to the back grounding metal ring 10 is disposed on the back surface of the PCB 13, the outer conductor of the coaxial cable is welded 9 to the second pad, and the front grounding metal ring 7 is electrically connected to the distal end of the microwave antenna 6.

The PCB 13 is provided with a plurality of through holes 14 plated with gold inside and located on the back grounding metal ring, and screws are screwed into the screw holes 2 of the metal shield 1 through the through holes 14, so that the metal shield 1 and the front grounding metal ring 7 are short-circuited to realize the electrical connection between the metal shield and the outer conductor of the coaxial cable.

In this example, the size of the outer ring of the metal shielding case 1 is phi 25mm, and the size of the circular PCB plate is phi 23 mm. The parameters of the microstrip line are as follows: the length of the line is 180mm, the line width is 0.4mm, the resistance is about 0.35 omega, the microstrip spiral is wound by 7.3 circles, and the distance between adjacent microstrip lines is as follows: 0.6 mm. The miniaturization of the microwave antenna with the center frequency of 433MHz can be realized by the parameters of the microstrip line within the following ranges: the line length range is 180mm +/-1 mm, the line width range is 0.4mm +/-0.05 mm, the resistance range is 0.35 omega +/-0.05 omega, and the line distance range is 0.6mm +/-0.05 mm.

Fig. 5 shows a standing wave ratio diagram of the radiator of the present embodiment. When the standing-wave ratio is equal to 1, the impedance of the feeder line and the antenna is completely matched, and the high-frequency energy is radiated by the antenna completely without energy reflection loss. Fig. 5 shows the standing wave ratio characteristic of the 433MHz radiator, and it can be seen that the frequency scale is at the lowest point of the graph, which means that the lowest standing wave ratio of 1.277 can be achieved for this radiator at the 433MHz center frequency point. Therefore, the matching degree of the radiator and the feeder line is high, the energy loss is low, and the 433MHz microwave acupuncture radiator has good performance. .

Example two

As shown in fig. 6-9, the radiator structure of this embodiment is the same as that of the first embodiment, and the center frequency of the antenna is 915 MHz. The size of the outer ring of the metal shielding case 1 is phi 18mm, and the size of the circular PCB is phi 16 mm. The parameters of the microstrip line are as follows: the length of the line is 95mm, the line width is 0.2mm, the resistance is about 0.35 omega, the microstrip spiral is wound and provided with 6.5 circles, and the distance between the adjacent microstrip lines is as follows: 0.4 mm. The micro-strip line parameters can realize the miniaturization of the microwave antenna with the center frequency of 915MHz within the following ranges: the line length range is 95mm +/-1 mm, the line width range is 0.2mm +/-0.05 mm, the resistance range is 0.35 omega +/-0.05 omega, and the line distance range is 0.4mm +/-0.05 mm.

Fig. 10 shows a standing wave ratio diagram of the radiator of the present embodiment. The 915MHz radiator standing wave ratio characteristic is shown in fig. 10, where it can be seen that the frequency scale is at the lowest point of the pattern, which means that the lowest standing wave ratio of 1.055 can be achieved for this radiator at the 915MHz center frequency point. Therefore, the matching degree of the radiator and the feeder line is high, the energy loss is low, and the 915MHz microwave acupuncture radiator has good performance.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. The microwave acupuncture radiator comprises an open metal shield and a microwave antenna arranged at the open position of the metal shield, wherein the microwave antenna is a rectangular spiral microstrip line, and the parameter of the microstrip line is one of the following parameters:

parameter A: the working frequency is 433 MHz;

and B, parameter B: the working frequency is 915 MHz;

2. The microwave acupuncture radiator of claim 1, wherein: the microwave acupuncture radiator adopting the parameter A is suitable for deep acupuncture point treatment, the center frequency of the antenna is 433MHz, and the standing wave is less than or equal to 1.30; the microwave acupuncture radiator adopting the parameter B is suitable for treating shallow acupuncture points, the center frequency of the antenna is 915MHz, and the standing wave is less than or equal to 1.10.

3. The microwave acupuncture radiator of claim 1, wherein:

preferred parameters of parameter a are:

preferred parameters of B are:

wire length: 95mm, line width: 0.2mm, resistance range: 0.35 omega +/-0.05 omega, 6.5 circles of microstrip rectangular spiral winding are arranged, and the distance between adjacent microstrip lines is as follows: 0.4 mm.

4. The microwave acupuncture radiator of claim 1, wherein: the microwave antenna is arranged on the front surface of a ceramic dielectric substrate, and the ceramic dielectric substrate is fixed at the opening of the metal shielding cover through a screw.

5. The microwave acupuncture radiator of claim 4, wherein: the back or the side part of the metal shielding cover is provided with a feeder line through hole for a coaxial cable to pass through, an inner conductor of the coaxial cable is electrically connected with the center of the microwave antenna, and an outer conductor of the coaxial cable is electrically connected with the far end of the microwave antenna.

6. The microwave acupuncture radiator of claim 5, wherein: the microwave antenna comprises a ceramic dielectric substrate, a microwave antenna and a coaxial cable, wherein the center of the back of the ceramic dielectric substrate is provided with a first bonding pad, the first bonding pad is electrically connected with the center of the microwave antenna through a metallized through hole, and an inner conductor of the coaxial cable is welded with the first bonding pad.

7. The microwave acupuncture radiator of claim 6, wherein: the periphery of the front and the back of the ceramic dielectric substrate is provided with a grounding metal ring, the front grounding metal ring and the back grounding metal ring are electrically connected through a metallized through hole, the back of the ceramic dielectric substrate is provided with a second bonding pad connected with the back grounding metal ring, an outer conductor of the coaxial cable is welded with the second bonding pad, and the front grounding metal ring is electrically connected with the far end of the microwave antenna.

8. The microwave acupuncture radiator of claim 7, wherein: the ceramic dielectric substrate is provided with a plurality of through holes positioned on the back grounding metal ring, and screws penetrate through the through holes and are screwed into the screw holes of the metal shielding cover, so that the metal shielding cover and the front grounding metal ring are in short circuit, and the metal shielding cover is electrically connected with the outer conductor of the coaxial cable.

9. The microwave acupuncture radiator of claim 1, wherein: an insulating sticker is pasted on the front surfaces of the dielectric substrate and the microstrip line.