CN111541013A - Method for improving performance of electrically small antenna for human body center wireless communication network and formed electrically small antenna structure - Google Patents
Method for improving performance of electrically small antenna for human body center wireless communication network and formed electrically small antenna structure Download PDFInfo
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- CN111541013A CN111541013A CN202010367662.8A CN202010367662A CN111541013A CN 111541013 A CN111541013 A CN 111541013A CN 202010367662 A CN202010367662 A CN 202010367662A CN 111541013 A CN111541013 A CN 111541013A
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- electrically small
- small antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/002—Protection against seismic waves, thermal radiation or other disturbances, e.g. nuclear explosion; Arrangements for improving the power handling capability of an antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
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Abstract
The invention discloses a method for improving the performance of an electrically small antenna for a human body center wireless communication network and an electrically small antenna structure formed by the method. Filling a filling material with high dielectric constant and low conductivity in a certain space around the electrically small antenna to surround and seal the electrically small antenna so as to realize the effects of improving the transmission efficiency of the electrically small antenna, expanding the working bandwidth and reducing the transmission loss; and the wave-transparent material is used as a shell of the package at the periphery of the filling space, so that the small electric antenna and the filling material are fixed. The electronic sensing equipment is arranged in the central area inside the shell, and the interlayer space between the electronic sensing equipment and the shell is a continuous space wrapped on the periphery of the electronic sensing equipment, so that under the limited volume, the electronic sensing equipment and the small electric antenna are integrated, and the occupied space of the filling material is increased to the maximum extent, so that the radiation efficiency and the receiving efficiency of the small electric antenna are improved to the maximum extent, the working bandwidth is expanded, and the transmission loss is reduced.
Description
Technical Field
The invention belongs to the field of communication technology, and particularly relates to a method for improving the performance of an electrically small antenna for a human body center wireless communication network and an electrically small antenna structure formed by the method.
Background
The electrically small antenna is an antenna with a physical size smaller than the operating wavelength 1/2 pi or 1/10, and the radio performance of the electrically small antenna is limited due to the physical size reduction of the electrically small antenna relative to electric waves, so that the electrically small antenna generally has the disadvantages of low radiation efficiency, narrow operating bandwidth and high transmission loss.
The human body center wireless communication network is a wireless communication network which takes a human body as a center and utilizes electronic sensing equipment implanted in or worn on the human body to monitor human body sign information and transmit signals, and the main application scenes of the wireless communication network are medical images and health detection. The sensor devices applied to the human body center wireless communication network can be divided into an in-vitro wearable device integrated on clothes and an in-vivo implantable device in a capsule form; both have the characteristics of small volume and uneasy detection. Due to the limitation of the volume of the equipment, the communication antennas carried on the two types of equipment are small-size antennas. Obviously, this is disadvantageous to the efficiency and stability of communication between devices within the system.
The key of the antenna human body center wireless communication system is to realize efficient and stable transmission between the inside and the outside of a human body, which requires that a transmitting antenna and a receiving antenna of equipment have higher radiation efficiency, larger working frequency bandwidth and lower transmission loss, so that the aim of improving the electrical length of the antenna under the condition of not changing the physical size of an electrically small antenna must be realized for realizing stable and efficient communication between human bodies, thereby improving the efficiency of the antenna, expanding the working bandwidth and reducing the transmission loss.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for improving the performance of an electrically small antenna for a human body center wireless communication network and an electrically small antenna structure formed by the method. The antenna has the advantages of simple thought, strong universality, low process requirement and low cost.
The invention is realized by the following technical scheme:
a method for improving the performance of an electrically small antenna for a human body center wireless communication network is characterized in that a filling material with high dielectric constant and low conductivity is filled in the space around the electrically small antenna, the electrically small antenna is enclosed and sealed, and a wave-transmitting material is used as a packaging shell at the periphery of the filling space.
In the above technical solution, the filling material is a liquid or solid material with high dielectric constant and low conductivity. Further, the filling material includes, but is not limited to, liquid materials such as deionized water and glycerin, and solid materials such as polymer molecular materials with high dielectric constant and low conductivity.
An electrically small antenna structure comprises an electrically small antenna, an electronic sensing device, a shell and a filling material, wherein the electronic sensing device is positioned inside the shell, an interlayer space is arranged between the electronic sensing device and the shell, the electrically small antenna is embedded in the interlayer space, and the filling material is filled in the interlayer space.
In the above technical solution, the filling material is a material with high dielectric constant and low conductivity.
In the above technical scheme, the shell is made of a wave-transparent material.
In the above technical solution, the electronic sensing device is disposed in the central area inside the housing, and the interlayer space between the electronic sensing device and the housing is a space continuously wrapped around the periphery of the electronic sensing device, which has the advantages that: under the limited volume, not only electronic sensing equipment and the electrically small antenna are integrated, but also the occupied space of the filling material is increased to the maximum extent, so that the filling material forms a large-volume hollow inclusion body, and the radiation efficiency and the receiving efficiency of the electrically small antenna are improved to the maximum extent due to the high dielectric constant and low conductivity of the filling material, the working bandwidth is expanded, and the transmission loss is reduced.
The invention has the advantages and beneficial effects that:
1. the invention improves the radiation efficiency and the receiving efficiency of the electrically small antenna, expands the working bandwidth of the electrically small antenna and reduces the transmission loss of the electrically small antenna.
2. The method for increasing the electric size of the small antenna by externally arranging the high-dielectric-constant material around the small antenna has the advantages of simple thought, simplicity and convenience in manufacturing, low process requirement and capability of greatly reducing the cost and the manufacturing difficulty.
3. The invention achieves the effect of increasing the electrical size of the antenna under the condition of hardly changing the physical total size of the electrically small antenna and the electronic sensing equipment, saves the precious space of the equipment and is beneficial to the integration and miniaturization of the wireless communication equipment in the center of the human body.
4. The method has good universality and practicability, can effectively improve the radio performance of electrically small antennas with various structures in a human body center wireless communication system, is suitable for antennas of internal equipment and external equipment of human body center wireless communication, and is suitable for receiving antennas and transmitting antennas of human body center wireless communication equipment.
Drawings
Fig. 1 is a schematic structural diagram formed by a method for improving the performance of an electrically small antenna according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of an electrically small antenna structure according to a second embodiment of the present invention.
Wherein:
1: electrically small antenna, 2: outer shell, 3: filler material, 4: an electronic sensing device.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.
Example one
The dipole electrically small antenna is taken as an example for explanation, and the core part of the method for improving the performance of the electrically small antenna for the human body center wireless communication network is shown in fig. 1, a filling material 3 with high dielectric constant and low conductivity is filled in a certain space around the electrically small antenna 1, and the electrically small antenna is enclosed and sealed, so that the effects of improving the transmission efficiency of the electrically small antenna, expanding the working bandwidth and reducing the transmission loss are realized; and the wave-transparent material is used as the shell 2 of the package at the periphery of the filling space, so that the function of fixing the electrically small antenna and the filling material is achieved, and the function of isolating other electronic devices in the equipment and avoiding interference is also achieved.
Further, the filling material mentioned in the above method is a liquid or solid material with high dielectric constant and low conductivity, including but not limited to liquid materials such as deionized water and glycerol, and solid materials such as polymer molecular materials with high dielectric constant and low conductivity.
Furthermore, the method shown in this example is not only suitable for antennas with simple structures, such as electric dipole antennas, but also suitable for antennas with various complex structures, such as conformal antennas. The structure of each antenna is different, so the method provided by the invention is changed in practical application, namely the space of the filling material of the antenna with different structures is correspondingly changed to adapt to the shape and the structure of the antenna, for example, a dipole antenna can be packaged by a cuboid or a cylinder which is slightly larger than the antenna, and a complex antenna is packaged by a package with larger volume to cover the whole antenna, thereby achieving the optimal balance of the antenna volume and the electrical property of the antenna and realizing the maximum efficiency.
Furthermore, the selection and application of the filling material with high dielectric constant and low conductivity in the method are not unique, and the corresponding selection should be made according to the actual situation. Taking the capsule sensor as an example, in practical use, an interlayer can be arranged in the shell of the capsule sensor, and the antenna and the filling material can be placed in the interlayer. Deionized water or glycerol may be selected as the filler material in this application. Deionized water and glycerin have higher relative dielectric constant and low conductivity, and can effectively increase the electrical length of the electrically small antenna; meanwhile, deionized water and glycerol are common materials which are easy to prepare, so that the process difficulty and the preparation cost are greatly reduced, and the method has high practicability. In other special application scenarios, a microwave solid material with a high dielectric constant can be selected to achieve better effect.
Example two
Referring to fig. 2, on the basis of the first embodiment, the present embodiment provides an electrically small antenna structure, which includes an electrically small antenna 1, an electronic sensing device 4, a housing 2 and a filling material 3, wherein the electronic sensing device is located inside the housing, and an interlayer space is formed between the electronic sensing device and the housing, the electrically small antenna is embedded in the interlayer space, and the filling material is filled in the interlayer space.
The filling material adopts a material with high dielectric constant and low conductivity.
The shell is made of wave-transparent materials.
Furthermore, the electronic sensing device is arranged in the central area inside the shell, and the interlayer space between the electronic sensing device and the shell is a continuous space which is wrapped on the periphery of the electronic sensing device, so that the advantages are that: under the limited volume, not only electronic sensing equipment and the electrically small antenna are integrated, but also the occupied space of the filling material is increased to the maximum extent, so that the filling material forms a large-volume hollow inclusion body, and the radiation efficiency and the receiving efficiency of the electrically small antenna are improved to the maximum extent due to the high dielectric constant and low conductivity of the filling material, the working bandwidth is expanded, and the transmission loss is reduced.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (7)
1. A method for improving the performance of an electrically small antenna in a human body center wireless communication network is characterized by comprising the following steps: filling a filling material with high dielectric constant and low conductivity in the space around the electrically small antenna to seal the electrically small antenna, and using a wave-transmitting material as a packaging shell at the periphery of the filling space.
2. The method for improving the performance of an electrically small antenna for a human body centric wireless communication network according to claim 1, characterized in that: the filling material is a liquid or solid material with high dielectric constant and low conductivity.
3. The method for improving the performance of an electrically small antenna for a human body centric wireless communication network according to claim 2, characterized in that: the filling material includes, but is not limited to, liquid materials such as deionized water and glycerol, and solid materials such as polymer molecular materials with high dielectric constant and low conductivity.
4. An electrically small antenna structure characterized by: the electronic sensing device is located inside the shell, an interlayer space is formed between the electronic sensing device and the shell, the small electric antenna is embedded in the interlayer space, and the interlayer space is filled with the filling material.
5. The electrically small antenna structure of claim 4, characterized in that: the filling material adopts a material with high dielectric constant and low conductivity.
6. The electrically small antenna structure of claim 4, characterized in that: the shell is made of wave-transparent materials.
7. The electrically small antenna structure of claim 4, characterized in that: the electronic sensing device is arranged in the central area of the shell, and the interlayer space between the electronic sensing device and the shell is a continuous space which is wrapped on the periphery of the electronic sensing device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010367662.8A CN111541013A (en) | 2020-04-30 | 2020-04-30 | Method for improving performance of electrically small antenna for human body center wireless communication network and formed electrically small antenna structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010367662.8A CN111541013A (en) | 2020-04-30 | 2020-04-30 | Method for improving performance of electrically small antenna for human body center wireless communication network and formed electrically small antenna structure |
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| CN111541013A true CN111541013A (en) | 2020-08-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030020810A1 (en) * | 2001-07-30 | 2003-01-30 | Olympus Optical Co., Ltd. | Capsule-type medical apparatus |
| CN101872894A (en) * | 2010-04-01 | 2010-10-27 | 电子科技大学 | Medium resonator antenna with reconfigurable directional diagram and phased array thereof |
| CN209107355U (en) * | 2018-04-10 | 2019-07-16 | 上海臣邦医药科技股份有限公司 | A kind of intelligent capsule |
| CN209313006U (en) * | 2019-01-17 | 2019-08-27 | 成都北斗天线工程技术有限公司 | A kind of high dielectric constant aqueous medium paster antenna that convex is conformal |
| CN110799099A (en) * | 2017-04-28 | 2020-02-14 | 费斯四工程部公司 | Pill antenna system |
-
2020
- 2020-04-30 CN CN202010367662.8A patent/CN111541013A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030020810A1 (en) * | 2001-07-30 | 2003-01-30 | Olympus Optical Co., Ltd. | Capsule-type medical apparatus |
| CN101872894A (en) * | 2010-04-01 | 2010-10-27 | 电子科技大学 | Medium resonator antenna with reconfigurable directional diagram and phased array thereof |
| CN110799099A (en) * | 2017-04-28 | 2020-02-14 | 费斯四工程部公司 | Pill antenna system |
| CN209107355U (en) * | 2018-04-10 | 2019-07-16 | 上海臣邦医药科技股份有限公司 | A kind of intelligent capsule |
| CN209313006U (en) * | 2019-01-17 | 2019-08-27 | 成都北斗天线工程技术有限公司 | A kind of high dielectric constant aqueous medium paster antenna that convex is conformal |
Non-Patent Citations (2)
| Title |
|---|
| KASUN M.S. THOTAHEWA等: ""A UWB wireless capsule endoscopy device"", 《2014 36TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY》 * |
| YANG LI等: ""An Implantable Antenna Design for an Intelligent Health Monitoring System Considering the Relative Permittivity and Conductivity of the Human Body"", 《IEEE ACCESS ( VOLUME: 7)》 * |
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Application publication date: 20200814 |