JP2002151926A - Antenna - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna that can easily be formed to have a low profile and a small size at a low cost. SOLUTION: The antenna is provided with a main body 40, a conductive layer 42 installed while being coated on an inner diametrical face of a through- hole of the main body 40, an insulator 43 that is fitted inside the conductive layer 42, and a feed pin that is placed in the center of the insulator 43. Patch antennas 52 are placed on a circumferential face of the main body 40 at a prescribed interval from an earth conductor layer 50 at one end of the main body 40. A spiral antenna 45 is connected to the other end of the main body. The signal from a mobile communication system and a positioning system received by the winding antenna 45 and the patch antenna 52 with the feeding pin and a conductor wire is delivered to the inside of a MODEM facility. Thus, the volume of the antenna can be reduced and the antenna with the low profile and small size can be formed at a low manufacture cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an antenna.

[0002]

2. Description of the Related Art At present, the range of human activities is expanding all over the world due to the progress of science and technology and transportation, and it has become a problem how to locate humans in a wide area and how to communicate with humans in other areas. ing. There is also a need in today's society to efficiently and avoid waste of labor, time and resources. Therefore, various localization systems (GPS: Globa)
l Positioning System and Mobile Communication System (GMS: Global System)
for Mobile Communicatio
Facilities with the function of n) have been developed and used in daily life or work of many people.

[0003] Conventional GMS and GPS antennas are independently formed. The mobile phone antenna receives only communication signals, and the GPS antenna receives only coordinate signals. As shown in FIG. 1, in order for the GPS equipment and the GPS signal to be received simultaneously by the modem equipment 10, the GPS antenna 11 and the GPS
Antenna 12 needs to be installed. For this reason, the manufacturing cost is high, and the mounting and manufacturing method are complicated. Therefore, an antenna capable of simultaneously receiving the GPS coordinate signal and the GMS communication signal is used.

[0004] The patch antenna used for the GPS antenna has a small volume, a solid structure, high stability, low efficiency loss, and is installed on a general curved carrier. As shown in FIG. 2, a ceramic substrate patch antenna (ceramic pas) used for GPS.
tch antenna 20 is a ceramic material (c
substrate 21 (su)
bstrate) is formed. On the upper and lower surfaces of the substrate 21, metal patches (patch) 2 formed into a square or a rectangle by a screen printer and etching.
2 and a ground plane 23 are formed. Also, a coaxial cable 24 is used,
Feeding pin 241
Penetrates through the ground plane 23 and the ceramic substrate 21, and feeds the metal patch 22 on the upper surface.
221. The external guide 242 is the ground plane 23
, The patch antenna 20 is assembled, and a signal is transmitted by the feeding pin 241.

[0005] As shown in FIG.
And the GMS signal are received at the same time, so that the patch antenna 20 used for GPS and the retractable antenna 31 used for GMS are assembled on one circuit board 30. The GPS is provided by the patch antenna 20 and the rewindable antenna 31 connected to both sides of the circuit board 30.
Are received, filtered and amplified by the circuit board 30, transmitted to the modem equipment via the cables 24 and 32, and subjected to signal processing.

[0006]

However, the conventional antenna, which receives GPS and GMS signals simultaneously, has a large volume, a complicated manufacturing method, and a high cost.
Therefore, the requirement that the parts are thin, small, and inexpensive is not satisfied. Therefore, an object of the present invention is to provide an antenna which can be easily formed thin and small at low cost.

[0007]

According to the antenna of the present invention, a column-shaped main body made of a dielectric, a through-hole formed in the main body in an axial direction, and an inner diameter surface of the through-hole are provided. A conductive layer provided to cover the conductive layer, an insulator fitted inside the conductive layer, and a feeding pin provided at the center of the insulator with both ends protruding from both ends of the main body. A ground conductive layer is installed on the surface of one end of the main unit,
A dielectric layer is provided inside the through-hole so as to cover it. The end of the through hole is connected to the dielectric layer, and a slot extending radially to the side surface is formed at the peripheral edge of the ground conductive layer. A patch antenna is provided on the peripheral surface of the main body so as to have a predetermined distance from the ground conductive layer. A feeding point extending in the direction of the ground conductive layer is provided inside the slot so as to have a predetermined distance from the ground conductive layer. A winding type antenna is connected to the feeding pin at the other end of the main body. The feeding pins and the conductors connected to the feeding pins are combined to convey the cellular communication system (GSM) and localization system (GPS) signals received by the winding and patch antennas inside the modem facility. I have. Therefore, the antenna volume is reduced, and a thin and small antenna can be formed at low manufacturing cost.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 4, an antenna according to an embodiment of the present invention includes a column-shaped main body formed of a ceramic or a polymer dielectric. A through hole 41 is formed in the main body 40 in the axial direction. A conductive layer 42 is coated on the inner diameter surface of the through hole 41, an insulator 43 is fitted inside, a feeding pin 44 is provided at the center of the insulator 43, and both ends of the feeding pin 4 are It is installed protruding from both ends of the main body 40. Since the feeding pin 4 is covered with the conductive layer 42,
The signal transmitted to the feeding pin 44 is not affected by the electromagnetic wave. The shape of the main body 40 is not limited to a column shape.

As shown in FIGS. 4 and 5, one end of the main body 40 is covered with a ground conductive layer 50.
0 denotes a dielectric layer 42 covering the inside of the end of the through hole 41.
Is connected to A slot 51 extending radially to the side surface is formed in a peripheral portion of the ground conductive layer 50,
The patch antenna 52 is installed on the peripheral surface of the. The patch antenna 52 is a polarizable patch antenna rotatable rightward and receives GPS and GSM signals. The patch antenna 52 is provided on the ground conductive layer 50 on the surface of the main body 40.
And a predetermined interval. As shown in FIG. 6, inside the slot 51, a feeding point 53 extending in the direction of the ground conductive layer 50 and having a predetermined interval from the ground conductive layer 50 is provided. Since the slot 51 extends to the end of the main body 40, the patch antenna 5
The second feeding point 53 extends to the end of the main body 40. The main body 40 is connected to one end 4 of the ground conductive layer 50.
4 and connected to the rewind antenna 45, and the GSM signal is received by the rewind antenna 45. Rewindable antenna 45 and patch antenna 52
The GSM and GPS signals received at are transmitted through the feeding pins 44, the feeding points 53 and the conductors connected to the upper portions of the feeding pins 44, transmitted to the inside of the modem equipment, and processed.

According to an antenna of another embodiment of the present invention, which is an improved structure of the above-described embodiment, it is possible to receive a GSM dual frequency signal. As shown in FIGS. 4, 6, and 7, a linear patch antenna 60 is provided so as to cover the surface of the main body 40 opposite to the ground conductive layer 50. The linear patch antenna 60 is installed so as to have a predetermined distance from the dielectric layer 42 that covers the inside of the through hole 41. A slot 61 is formed in the upper part of the linear patch antenna 60 so as to extend to the peripheral edge in the diameter direction of the main body 40. A linear patch antenna 62 is provided on the peripheral surface of the main body 40 so as to cover the linear patch antenna 62.
2 is installed so as to have a predetermined distance from the linear patch antenna 60. A feeding point 63 is installed on the linear patch antenna 62 so as to extend inside the slot 60 in the direction of the linear patch antenna 60 and to have a predetermined distance from the dielectric layer 42 of the through hole 41. The feeding pin 44 is not connected to the retractable antenna 45,
The feeding points 6 of the linear patch antenna 62 of the linear patch antenna 60 are connected by the conductors 65 and 66.
3 and the feeding point 64 are connected to the feeding pin 44. Since the GMS dual frequency signal is generated by the linear patch antenna 60 and the linear patch antenna 62, the retractable antenna 45 is unnecessary, and the length of the antenna can be greatly reduced. GSM dual frequency signal and GPS received by the linear patch antenna 60, the linear patch antenna 62 and the patch antenna 52 via the feeding pin 44, the feeding point 53, and the conductor connected to the feeding pin 44 Is transmitted inside the modem equipment, where filtering and other signal processing are performed.

As shown in FIG. 4 and FIG. 8, according to another embodiment of the present invention, the surface of one end of the main body 40 is covered with a ground conductive layer 70. Ground conductive layer 7
The end of the through hole 41 is connected to the dielectric layer 42 that covers the inside of the through hole 41. A patch antenna 71 is provided so as to cover the radial peripheral surface of the main body 40,
The patch antenna 71 is polarizable so as to be able to rotate rightward, and receives a GPS signal. The feeding point 73 of the patch antenna 71 extends and is installed on the surface of the other end of the main body 40. On the peripheral surface at the other end of the main body 40, a linear patch antenna 72 having a predetermined distance from the dielectric layer 42 inside the through-hole 41 is provided so as to cover it. The linear patch antenna 72 is installed so as to have a predetermined distance from the patch antenna 71. The feeding point 74 of the linear patch antenna 72 extends on the surface of the other end of the main body 40 and is installed so as to have a predetermined distance from the conductive layer 42 inside the through hole 41. For this reason, the feeding pin 44 does not need to be connected to the retractable antenna 45, and the linear patch antenna 71 and the linear patch antenna 72 are connected by the conductors 76 and 77.
Are connected to the feeding pin 44, respectively. The linear patch antenna 71 and the linear patch antenna 72 can receive GPS and GSM signals, respectively. In addition, the GPS and GSM signals are transmitted to the inside of the modem equipment by the feeding pins 44 and the conductors connected to the feeding pins 44, and are subjected to filtering and signal processing.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a conventional antenna.

FIG. 2 is a perspective view showing a conventional antenna.

FIG. 3 is a schematic diagram showing a conventional antenna.

FIG. 4 is an exploded perspective view illustrating an antenna according to an embodiment of the present invention.

FIG. 5 is a perspective view showing an antenna according to an embodiment of the present invention.

FIG. 6 is a perspective view showing an antenna according to an embodiment of the present invention.

FIG. 7 is a perspective view illustrating an antenna according to another embodiment of the present invention.

FIG. 8 is a perspective view illustrating an antenna according to another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 40 Body 41 Through hole 42 Dielectric layer 43 Insulator 44 Feeding pin 45 Rewindable antenna 50 Ground conductive layer 51 Slot 52 Patch antenna 53 Feeding point

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H01Q 21/24 H01Q 21/24 21/28 21/28 F term (Reference) 5J021 AA02 AA07 AA13 AB02 AB06 CA01 GA08 HA03 HA05 HA10 JA07 5J046 AA04 AB12 AB13 PA02 QA02 5J047 AA04 AB12 AB13 FD01

Claims (17)

[Claims] 1. A column-shaped main body formed of a dielectric, a through hole formed in the main body in an axial direction, a conductive layer provided so as to cover an inner diameter surface of the through hole, and An insulator fitted inside the conductive layer, and a feeding pin having both ends protruding from both ends of the main body at the center of the insulator, and a ground conductive layer on a surface of one end of the main body. The through-hole is provided with a dielectric layer covering the inside thereof, and the end of the through-hole is connected to the dielectric layer. An extending slot is formed, a patch antenna is installed on the peripheral surface of the main body so as to have a predetermined distance from the ground conductive layer, and the patch antenna extends inside the slot in the direction of the ground conductive layer. The feeding point is A winding antenna is connected to the feeding pin at the other end of the main body, and the feeding pin and a conductive wire connected to the feeding pin are A portable communication system (G) received by the winding antenna and the patch antenna
An antenna, wherein the antenna is combined to carry SM and localization system (GPS) signals inside a modem facility. 2. The antenna according to claim 1, wherein the main body is a columnar column. 3. The antenna according to claim 1, wherein the dielectric is made of a ceramic material. 4. The antenna according to claim 1, wherein the dielectric is made of a polymer material. 5. The antenna according to claim 1, wherein the patch antenna is a polarizable patch antenna rotatable rightward. 6. A column-shaped main body formed from a derivative, a through hole formed in the main body in an axial direction, a conductive layer covering an inner diameter surface of the through hole, and a fitting to the conductive layer. An insulator to be combined, and a feeding pin having both ends protruding from both ends of the main body at the center of the insulator, and a ground conductive layer is provided on one end surface of the main body so as to cover the main body. A dielectric layer is installed inside the through hole and installed.
An end of the through hole is connected to the dielectric layer, a first slot is formed in a peripheral portion of the ground conductive layer and extends radially to a side surface, and a patch antenna is provided on the peripheral surface of the main body. A first feeding point extending in the first slot toward the ground conductive layer at a predetermined distance from the ground conductive layer. A first linear patch antenna is installed on the other end surface of the main body so as to have a predetermined distance from the conductive layer, and the first linear patch antenna is formed on a second portion extending to a peripheral portion in a diameter direction of the main body. A slot is formed, a second feeding point is installed, and a second linear patch antenna is provided on a side surface of the main body at a predetermined distance from the first linear patch antenna. A third feeding point extending inward of the two slots in the direction of the first linear patch antenna is provided at the second linear patch antenna so as to have a predetermined distance from the dielectric layer; A second feeding point and the third feeding point are connected to the feeding pin by a first wire and a second wire, respectively, and the third wire connected to the feeding pin and the feeding pin is linear. An antenna, wherein the antenna is combined to transmit a dual-frequency signal of a cellular communication system (GSM) and a localization system (GPS) signal received by the patch antenna and the patch antenna into a modem facility. 7. The antenna according to claim 6, wherein the main body is a columnar column. 8. The antenna according to claim 6, wherein the dielectric is made of a ceramic material. 9. The antenna according to claim 6, wherein the dielectric is made of a polymer material. 10. The antenna according to claim 6, wherein the patch antenna is a polarizable patch antenna rotatable rightward. 11. The antenna according to claim 6, wherein the first linear patch antenna and the second linear patch antenna are linearly polarizable patch antennas. 12. A pillar-shaped body formed from a dielectric,
A through hole formed in the body in the axial direction, a conductive layer covering an inner diameter surface of the through hole, an insulator fitted inside the conductive layer, and a central portion of the insulator. A feeder pin having both ends protruding from both ends of the main body, a ground conductive layer covering one end surface of the main body, and a dielectric layer covering the inside of the through hole; ,
An end of the through-hole is connected to the dielectric layer, a slot is formed on a peripheral portion of the ground conductive layer so as to extend in a side surface in a radial direction, and a patch antenna is provided on the peripheral surface of the main body with the ground conductive layer. A first feeding point is installed at a predetermined distance from the patch antenna, extends toward the other end surface of the main body, and has a first feeding point at a predetermined distance from the dielectric layer. An antenna is installed at a predetermined distance from the patch antenna, and a second patch extending to the other end surface of the main body is provided on the linear patch antenna.
A feeding point is installed at a predetermined distance from the conductive layer, and the feeding pin and a lead wire connected to the feeding pin are connected to the linear patch antenna and a portable communication system (GS) received by the patch antenna.
M) Dual frequency signal and localization system (GPS)
Characterized in that the antennas are combined to transmit the signals of the respective types to the inside of the modem equipment. 13. The antenna according to claim 12, wherein the main body is a columnar column. 14. The antenna according to claim 12, wherein the dielectric is made of a ceramic material. 15. The antenna according to claim 12, wherein the dielectric is made of a polymer material. 16. The antenna according to claim 12, wherein the patch antenna is a polarizable patch antenna rotatable rightward. 17. The antenna according to claim 12, wherein the linear patch antenna is a linearly polarizable patch antenna.