TW201123611A - Antenna and miniaturizing method - Google Patents

Abstract

The present invention relates to a method for miniaturizing an antenna. The antenna includes a radiator. The miniaturizing method includes following steps: miniaturizing the size of the radiator to decrease a current path of the antenna; forming at least one through hole in the radiator to increase the current path of the antenna, and the decrement of the current path of the antenna is equal to the increment of the current path; forming a miniature antenna. Thereby, under a condition of keeping the same current path of the antenna, the antenna can be miniaturized to keep the same frequency. This invention also relates to a miniature antenna.

Description

201123611 VI. Description of the Invention: [Technical Field] The present invention relates to an antenna, and more particularly to a block antenna and a miniaturization method thereof. [Prior Art] [0002] Since the invention of antennas by Hertz and Marconi, the role of antennas in social life has increased dramatically and has become an integral part of our lives. Today's antennas are more ubiquitous. They have penetrated into all areas of our lives: computers, televisions, mobile phones, satellites, cars, aircraft ships, etc., and the size of antennas is also becoming smaller. Generally, the material of the antenna is modified to reduce the Zhao product. However, modifying the material of the antenna causes the characteristics of the antenna to change, such as the gain of the antenna is reduced and the frequency is lowered. SUMMARY OF THE INVENTION [0003] In view of this, it is necessary to provide a smaller antenna. [0004] It is also necessary to provide an antenna 小型 miniaturization method in which the volume is reduced while the antenna frequency remains unchanged. [0005] An antenna comprising a radiator, a metal layer parallel to the radiator, a dielectric between the radiator and the metal layer, and an insulating substrate. The metal layer is laid on the insulating substrate and electrically grounded, and the dielectric is used to make the antenna less susceptible to temperature fluctuations and frequency drift. The radiator is for transmitting and receiving electromagnetic wave signals, and the radiator is provided with at least one through hole to change a current path of the antenna. [0006] The antenna is provided with a through hole in the radiator of the antenna to increase the current path of the antenna 098144356 Form No. A0101 3/15 pages 0982075823-0 201123611, while reducing the radiator Dimensions such that the current path of the antenna is shortened, and the amount of shortening of the current path of the antenna is the same as the amount of increase of the current path of the antenna, so that the current path of the antenna can be kept constant while reducing the volume of the antenna. Furthermore, the frequency of the antenna remains unchanged. [0007] An antenna miniaturization method includes a radiator, a metal layer parallel to the radiator, a dielectric between the radiator and the metal layer, and an insulating substrate. The radiator is used for transmitting and receiving electromagnetic wave signals, and the metal layer is laid on the insulating substrate and electrically grounded. The dielectric is used to make the antenna less susceptible to temperature fluctuations and frequency drift. The antenna miniaturization method includes the steps of: reducing a size of a radiator of the antenna to shorten a current path of the antenna; forming a through hole in the radiator to increase a current path of the antenna, and shortening a current path of the antenna The current path of the antenna is increased by the same amount; a miniaturized antenna is formed. [0008] The antenna miniaturization method reduces the size of a radiator of the antenna to shorten a current path of the antenna, and simultaneously forms a through hole in the radiator to increase a current path of the antenna, and a current path of the antenna The amount of shortening is the same as the amount of increase of the current path of the antenna, so that the volume of the antenna can be reduced while maintaining the current path of the antenna, and the miniaturized antenna can maintain the frequency. [Embodiment] The present invention will be further described in detail below with reference to the accompanying drawings. [0010] As shown in FIG. 1, it is a schematic structural view of an antenna 100 in a preferred embodiment. In the present embodiment, the antenna 100 is a patch antenna, also referred to as a patch antenna, which includes a radiator 10, a metal layer 12, and a 098144356. Form No. A0101 Page 4 of 15 0982075823-0 201123611 [0011] [ 0012] 〇 098144356 Dielectric 14, insulating substrate 16 and transmission line 18. The metal layer 12 is parallel to the radiator 10, and the metal layer 12 is laid on the insulating substrate 16 and electrically grounded. In the present embodiment, the metal layer 12 is made of the same material as the radiator 10. Preferably, the metal layer 12 and the material of the radiator 10 include iron. The dielectric 14 is between the radiator 10 and the metal layer 12. The dielectric 14 is disposed such that the antenna 100 is less susceptible to temperature and frequency drift occurs. In the present embodiment, the dielectric material 14 is hollowed out, and the pattern of the hollow portion may be a circle, a square or any other pattern. Of course, the dielectric material 14 can also be in the form of a mesh, and the mesh shape can be realized by dense punching. In other embodiments, the dielectric 14 can also be air. The radiator 10 is used for transmitting and receiving electromagnetic wave signals. The center of the radiator 10 is provided with a through hole 11. In the present embodiment, the shape of the radiator 10 is rectangular, and the shape of the through hole 11 is circular. The radiator 10 is electrically connected to the transmission line 18. The corresponding electrical connection is the signal feed end A, and the signal feed end A is disposed at the edge of the dielectric 14. Generally, a current path extending along the radiator 10 via the signal feed end A and reaching the other side of the radiator 10 opposite to the signal feed end A is referred to as a current path AB of the antenna 100. . The longer the current path AB, the lower the frequency of the antenna 100. Since the center of the radiator 10 is provided with a through hole 11 in this embodiment, the current path AB needs to extend around the through hole 11. The antenna 100 has a relatively long current path compared to a conventional antenna (not shown) in which the same condition (such as the material of the radiator 10, the material of the dielectric 14 and the like remains unchanged) without the through hole 11 being provided. In order to make the antenna 100 have the same current path as the conventional antenna, the external size of the radiator 10 can be correspondingly reduced to shorten the current path of the antenna 100 Form No. A0101, Page 5 / 15 pages 0982075823-0 201123611. Therefore, the conventional antenna of the same frequency can be made smaller in volume than the antenna 100 than the antenna 100. [0014] Referring to FIG. 2, the transmission line 18 is used to transmit signals, specifically, the signals received by the radiator 10 are transmitted to an electrical device (not shown) or the signals of the electrical devices are transmitted to the radiator 10. In the present embodiment, the transmission line 18 is a coaxial cable. The transmission line 18 includes a hollow insulating housing 181, a hollow metal conductor 183 received in the insulating housing 181, and a hollow insulating spacer 185 received in the metal conductor 183. And a metal cable core 187 housed in the insulating spacer 185. The metal cable core 187 is electrically connected to the radiator 10. Preferably, the metal cable core 187 is electrically connected to the radiator 10 by soldering, and the soldering portion is also the signal feeding end A. The metal conductor 183 is electrically connected to the metal layer 12, and the corresponding electrical connection is a ground terminal C, and the ground terminal C is disposed on the metal layer 12. In this embodiment, the transmission line 18 extends through the metal layer 12 and the insulating substrate 16 to electrically connect to the electrical device. Of course, the transmission line 18 can also extend along the surface of the metal layer 12. [0015] It can be understood that the through hole 11 can also have other regular shapes or irregular shapes under the condition that the antenna 100 has the same current path as the conventional antenna; it can also be understood that the antenna 100 is guaranteed Under the condition that the conventional antenna has the same current path, the number of the through holes 11 is not limited to one in the embodiment, and the number thereof may be more. As shown in FIG. 3, an antenna 200 according to a second embodiment of the present invention is different from the antenna 100 in that the through hole 21 in the radiator 20 of the antenna 200 is a square through hole [0016]. The antenna is formed by opening a through hole 098144356 on the radiator of the antenna, Form No. A0101, Page 6 / 15 pages 0982075823-0 201123611 to increase the current path of the antenna while reducing the size of the radiator The current path of the antenna is shortened, and the shortening of the current path of the antenna is the same as the increase of the current path of the antenna, so that the current path of the antenna can be kept unchanged while reducing the volume of the antenna. The frequency of the antenna remains the same. [0017] Please refer to FIG. 4, which illustrates an antenna miniaturization method according to the present invention, which includes the following steps. [0018] Step S11, reducing the size of the radiator of the antenna to shorten the current path of the antenna. [0019] Step S13, a through hole is formed in the radiator to increase a current path of the antenna, and a shortening amount of the current path of the antenna is the same as an increase of a current path of the antenna. [0020] In step S15, a miniaturized antenna is formed. [0021] It can be understood that, under the condition that the antenna and the miniaturized antenna have the same current path, the through hole may also have other regular shapes (such as a circular through hole or a square through hole) or an irregular shape: It can also be understood that, under the condition that the antenna and the miniaturized antenna have the same current path, the number of the through holes is not limited to one of the embodiments, and the number thereof may be more. [0022] The antenna miniaturization method reduces the size of the radiator of the antenna to shorten the current path of the antenna, and opens a through hole in the radiator to increase the current path of the antenna, and the current path of the antenna The amount of shortening is the same as the amount of increase of the current path of the antenna, so that the volume of the antenna can be reduced while maintaining the current path of the antenna. 098144356 Form No. A0101 Page 7 of 15 0982075823-0 201123611 The miniaturized antenna can maintain the same frequency. [0023] In summary, the present invention complies with the requirements of the invention patent, and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0024] FIG. 1 is a schematic structural view of an antenna according to a first embodiment of the present invention. 2 is a schematic structural diagram of a transmission line of the antenna of FIG. 1. 3 is a schematic structural diagram of an antenna according to a second embodiment of the present invention. 4 is a flowchart of a method for miniaturizing an antenna according to an embodiment of the present invention. [Main component symbol description] [0028] Antenna: 100, 200 [0029] Radiator: 10, 20 [0030] Metal layer: 12 [0031] Through hole: 11, 21 [0032] Dielectric: 14 [0033] Insulating substrate: 16 [0034] Transmission line: 18 [0035] Insulating housing: 181 [0036] Metal conductor: 183 098144356 Form number A0101 Page 8 / Total 15 page 0982075823-0 201123611 [0037] Insulation spacer: 1 8 5 [ 0038] Metal cable core: 187

[0039] Signal feed end: A

[0040] Central: B

[0041] Ground terminal: C

[0042] Current Path: AB

[0043] Antenna miniaturization method steps: S11 ~ S 1 5 〇

098144356 Form No. A0101 Page 9 of 15 0982075823-0

Claims (1)

201123611 VII. Patent application scope: 1. An antenna comprising a radiator, a metal layer parallel to the radiator, a dielectric and an insulating substrate between the radiator and the metal layer, the radiator being used for transmitting and receiving An electromagnetic wave signal, the metal layer is laid on the insulating substrate and electrically grounded, and the dielectric is used to make the antenna less susceptible to temperature and frequency drift occurs. The improvement is that the radiation body is provided with at least one through hole to change The current path of the antenna. 2. The antenna of claim 1, wherein the through hole is a circular through hole. 3. The antenna of claim 1, wherein the through hole is a square through hole. 4. The antenna of claim 1, wherein the dielectric is a hollow structure. 5. The antenna of claim 1, wherein the antenna further comprises a transmission line, the transmission line is a coaxial cable, the transmission line includes a hollow metal conductor, a hollow insulating spacer received in the metal conductor, and a metal cable core housed in the insulating spacer, the metal cable core and the radiator electrical Connected, the metal conductor is electrically connected to the metal layer. 6. The antenna of claim 5, wherein the electrical connection between the metal foil and the radiator is a signal feed end, and the signal feed end is disposed at an edge of the dielectric . 7. The antenna of claim 1, wherein the metal layer is the same material as the radiator. 8. The antenna of claim 7, wherein the metal layer and the material of the radiator comprise iron. 098144356 Form No. A0101 Page 10 of 15 0982075823-0 201123611 An antenna miniaturization method, the antenna comprising a radiator, a metal layer parallel to the radiator, a dielectric between the radiator and the metal layer And an insulating substrate for transmitting and receiving electromagnetic wave signals, the metal layer is laid on the insulating substrate and electrically grounded, and the dielectric material is used to make the antenna less susceptible to temperature and frequency drift occurs, and the improvement is that The antenna miniaturization method comprises the steps of: reducing the size of the radiator of the antenna to shorten the current path of the antenna; Ο ί ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο The amount of shortening is the same as the amount of increase of the current path of the antenna; and a miniaturized antenna is formed. The antenna miniaturization method of claim 9, wherein at least one through hole of one shape of a circle or a square is opened on the radiator to increase a current path of the antenna, and the current of the antenna The amount of shortening of the path is the same as the amount of increase of the current path of the antenna. 8 ' \ ι ; . 1 :.丨..丨: y : 二 $ — 〇 098144356 Form No. A0101 Page 11 of 15 0982075823-0