JPH07106841A - Printed dipole antenna - Google Patents

Abstract

PURPOSE:To attain feeding even to an orthogonal polarized wave by providing the printed dipole to one side or both sides of a dielectric board and providing a printed feeding line to a dielectric board orthogonal to the former dielectric board and connecting them along a throughhole provided in the boards. CONSTITUTION:A signal received by dipoles 2a, 2b is converted from a balanced current into an unbalanced current at a connection part between the dipole 2a and a dipole feeding line 3a, and the current flows to a microstrip line comprising the line 3a and a ground conductor 4 and the signal current is provided as an output from a coaxial plug 5a. Furthermore, the signal received by dipoles 2c, 2d is outputted similarly from a coaxial plug 5b. Since the printed dipoles 2a, 2b are orthogonal to printed lines 3a, 3b, the signal of a polarized wave orthogonal to a plane of a dielectric plate 1 is received by the printed dipole antennas. Thus, heat radiation from a semiconductor circuit is made effective.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed dipole antenna constructed by using a dielectric substrate.

[0002]

2. Description of the Related Art FIG. 6 is a structural view of a conventional printed dipole antenna disclosed in, for example, Japanese Patent Laid-Open No. 58-62902, in which 1 is a dielectric plate, 2a and 2b.
Is a dipole formed on both side surfaces of the dielectric 1, 3 is a dipole feed line connected to the dipole 2a, 4 is a ground conductor connected to the dipole 2b, and the dipole feed line 3 and this ground conductor 4 are shown. To form a microstrip line. Reference numeral 5a is a coaxial plug which is connected to the dipole feed line 3 and the ground conductor 4 at the end of the dielectric 1. The dipoles 2a and 2b, the dipole feed line 3 and the ground conductor 4 are formed by printing conductors on both side surfaces of the dielectric 1. Further, the dielectric 1 is twisted at the portion A in the figure. The above dipoles 2a and 2
The part of the dielectric 1 where b is printed and the part of the dielectric 1 where the coaxial plug 5a is connected are not on the same plane.

Next, the operation will be described. Dipole 2
The signal currents received by a and 2b are converted from a balanced current to an unbalanced current at the connection between the dipole feed line 3 and the connection between the dipole 2b and the ground conductor 4, and the dipole feed line 3 and the ground conductor 4 are converted. It flows into the microstrip line composed of and. The signal current is transmitted through this microstrip line and output from the coaxial connector 5a. Since the portions of the dielectric 1 on which the dipoles 2a and 2b are printed are not parallel to the portion to which the coaxial plug 5a is connected, the polarized light that is not parallel to the portion of the dielectric 1 to which the coaxial plug 5a is connected. This printed dipole antenna can receive the signal of.

[0004]

Since the conventional printed dipole antenna is constructed as described above, it is difficult to twist the dielectric 1 without causing distortion when the dielectric 1 is twisted. There was a point. In addition, when the dielectric 1 is twisted, the dipole power supply circuit 3 is likely to be distorted, cracked, or peeled off, resulting in an increase in transmission loss of the dipole power supply line 3.

[0005]

A printed dipole antenna according to a first embodiment of the present invention is a diball antenna in which a dipole is printed on one side or both sides of a dielectric substrate, and is orthogonal to a plane printed with the dipole. Another dielectric substrate is provided on the flat surface, a dipole feed line is printed on one or both sides of the dielectric substrate, and the dipole is printed along the through hole provided in the thickness direction of the dielectric substrate on which the dipole is printed. And the dipole feed line are connected to each other, the dielectric substrate portion printed with the dipole, and the die ball feed line,
The printed circuit board and the dielectric substrate are not on the same plane.

A printed dipole antenna according to a second embodiment of the present invention is constructed by integrating a dipole feed line of the printed dipole antenna and a semiconductor circuit connected to the dipole feed line on the same dielectric substrate. To do.

A printed dipole antenna according to a third embodiment of the present invention is one in which one or a plurality of slits are provided in the printed dipole of the printed dipole antenna.

A printed dipole antenna according to a fourth embodiment of the present invention comprises a first printed dipole antenna in which a dipole and a dipole feed line are printed on the same plane on one side or both sides of a dielectric substrate. The second printed dipole antenna described is the first
The dielectric substrate of the dipole feed line of the printed dipole antenna and the dielectric substrate of the dipole feed line of the printed dipole antenna are arranged in parallel.

A printed dipole antenna according to a fifth embodiment of the present invention is a printed dipole antenna in which a dipole and a dipole feed line are printed on the same plane on one side or both sides of a dielectric substrate. One or a plurality of slits are provided.

[0010]

In the present invention, in the first embodiment, another dielectric substrate is provided on a plane orthogonal to the plane on which a dipole is printed on one side or both sides of the dielectric substrate, and the dipole feed line is provided on one side or both sides of the dielectric substrate. To print,
Connect the dipole and the dipole feed line along a through hole provided in the thickness direction of the dielectric substrate on which the dipole is printed, and connect the dipole print line to the dielectric substrate portion and the dipole feed line. Since the printed dielectric board is not on the same plane, the polarization direction of the radio wave transmitted and received by the dipole and the plane of the dielectric board on which the dipole feed line is printed are orthogonal to each other. .

In the second embodiment of the present invention, a dipole feed line of the printed dipole antenna,
A semiconductor circuit connected to the dipole feed line is integrally formed on the same dielectric substrate, and the surface area of the dielectric substrate is set to be an area sufficient to dissipate heat generated from the semiconductor circuit. Thus, the heat generated from the semiconductor circuit is efficiently dissipated.

According to the third embodiment of the present invention, by providing one or a plurality of slits in the printed dipole of the printed dipole antenna,
It is possible to suppress radio waves having a polarization component parallel to the plane of the dielectric substrate on which the dipole feed line is printed.

According to a fourth embodiment of the present invention, a first printed dipole antenna in which a dipole and a dipole feed line are printed on the same plane on one side or both sides of a dielectric substrate, and a second printed dipole antenna according to claim 1 are provided. By arranging the printed dipole antenna so that the dielectric substrate of the dipole feed line of the first printed dipole antenna and the dielectric substrate of the dipole feed line of the second printed dipole antenna are parallel, Two orthogonally polarized printed dipole antennas are fed by a distribution circuit on a dielectric substrate placed at.

In the present invention, in the fifth embodiment, one or a plurality of slits are provided in a dipole in which a dipole and a dipole feed line are printed on the same plane on one side or both sides of the dielectric substrate. It is possible to suppress radio waves having a polarization component orthogonal to the plane of the substrate.

[0015]

EXAMPLES Example 1. Embodiment 1 of the present invention will be described below with reference to the drawings. 1 is a configuration diagram of a printed dipole antenna according to a first embodiment of the present invention. In the figure, reference numerals 1 and 2 denote dielectric plates, 2a and 2b and 2c and 2d are paired on the dielectric plate 2. The formed dipoles 3a and 3b are connected to the dipoles 2a and 2c along the through hole 6 provided in the thickness direction of the dielectric plate 2, and the dipole feed line 4 is connected to the dipoles 2b and 2d. It is a ground conductor, and is the dipole feed line 3a.
And 3b and this ground conductor 4 form a microstrip line. Reference numerals 5a and 5b are coaxial plugs connected to the ends of the dielectric plate 1.

Next, the operation will be described. Dipole 2
The signal currents received by a and 2b are converted from a balanced current to an unbalanced current at the connection between the dipole 2a and the dipole feed line 3a and at the connection between the dipole 2b and the ground conductor 4, and the dipole feed line 3a and the ground are fed. It flows into the microstrip line constituted by the conductor 4. The signal current is output from the coaxial connector 5a. The signal current received by the dipoles 2c and 2d is also output from the coaxial connector 5b. The portions of the dielectric plate 2 on which the dipoles 2a and 2b are printed are the dipole feed lines 3a and 3b.
Since b is orthogonal to the printed portion, the printed diball antenna can receive a signal of polarized waves in a direction orthogonal to the plane of the dielectric plate 1. In the above embodiment, the line format of the dipole feed lines 3a and 3b is a microstrip line, but a triplate line is used in which the ground conductors 4 are arranged facing each other and the dipole feed lines 3a and 3b are provided between them. However, the same effect can be expected.

Example 2. 2 is a configuration diagram of a printed dipole antenna according to a second embodiment of the present invention,
1, 2, 2a to 2d, 3a, 3b, 4, 5a, 5b, 6
Is the same as in Example 1 above. 8a and 8b are semiconductor circuits connected to the dipole feed lines 3a and 3b, respectively.
Reference numerals a and 9b are microstrip lines respectively connected to the semiconductor circuits 8a and 8b.

Next, the operation will be described. In the above-mentioned embodiment, the signal currents received by the dipoles 2a to 2d are the same as those in the above-mentioned first embodiment.
b, and semiconductor circuits 8a, 8 composed of amplifiers and the like
Enter in b. It is transmitted through the microstrip lines 9a and 9b and taken out from the coaxial connector 5a and 5b. The heat generated by the semiconductor circuits 8a and 8b can be expected to be radiated by the dielectric plate 1.

Example 3. FIG. 3 is a configuration diagram of a printed dipole antenna according to a third embodiment of the present invention, in which 1,2,2a to 2d, 3a, 3b, 4,5a,
6 is the same as that in the above-mentioned first embodiment. The strip line 9a is connected to each of the dipole feed lines 3a and 3b to form a T branch. Reference numeral 12a is a polarization vector representing a polarization direction orthogonal to the dielectric plate 1, and 12b is a polarization vector representing a polarization direction parallel to the dielectric plate 1. 21
Is a dielectric plate provided in parallel with the dielectric plate 1. Two
2a and 22c are dipoles provided on one surface of the dielectric plate 21, and 23a and 23b are dipoles 22a and 22c.
The reference numeral 29a denotes a strip line in which the dipole power supply lines 23a and 23b are respectively connected to form a T branch. 22b and 22d are dipoles provided on the other surface of the dielectric substrate 21, and 24 is a ground conductor connected to the dipoles 22b and 22d. Reference numeral 25a is a coaxial connector connected to the end of the dielectric plate 21.

Next, the operation will be described. In the above embodiment, the polarized signal in the direction of the polarization vector 12a is
The dipoles are received by the dipoles 2a to 2d and transmitted through the dipole feed lines 3a and 3b. And the dipole feed line 3
It is combined by the T branch composed of a and 3b and the strip line 9a, and is output from the coaxial connector 5a. On the other hand, the signal polarized in the direction of the polarization vector 12b is the dipole 22a.
~ 22d received dipole feed lines 23a and 23b
To transmit. Then, the dipole feed lines 23a and 23
b and the strip line 29a are combined into a T-branch and output from the coaxial connector 25a.

Example 4. FIG. 4 is a configuration diagram of a printed dipole antenna according to a fourth embodiment of the present invention, in which 11 is a slit provided on the dipoles 2a to 2d.

Next, the operation will be described. In the above embodiment, the polarized signal in the direction of the polarization vector 12a is
Dipole feed line 3 received by dipoles 2a-2d
a and 3b are transmitted. Since the dipoles 2a to 2d have a finite width, signals of polarization in the direction of the polarization vector 12b are also received, but the slits 11 provided in the dipoles 2a to 2d cause the polarization in the direction of the polarization vector 12b. The effect of suppressing the signal can be expected.

Example 5. FIG. 5 is a configuration diagram of a printed dipole antenna according to a fifth embodiment of the present invention, in which reference numeral 21 is a slit provided on the dipoles 22a to 22d.

Next, the operation will be described. In the above embodiment, the polarized signal in the direction of the polarization vector 12b is
It is received by the dipoles 22a to 22d and transmitted through the dipole feed lines 23a and 23b. The dipole 22a-
Since 22d has a finite width, signals of polarized waves in the direction of the polarization vector 12a are also received.
The polarization vector 12a is formed by the slit 21 provided in 22d.
The effect of suppressing the polarized wave signal in the direction of can be expected.

[0025]

As described above, according to the present invention, another dielectric substrate is provided on a plane orthogonal to the plane on which a dipole is printed on one side or both sides of the dielectric substrate, and one side or both sides of the dielectric substrate are provided. The dipole feed line is printed on the printed circuit board, and the dipole and the dipole feed line are connected along a through hole provided in the thickness direction of the dielectric substrate on which the dipole is printed. There is an effect that the direction of the dielectric substrate on which the dipole feed line is printed can be made orthogonal to the direction.

The dipole feed line of the printed dipole antenna and the semiconductor circuit connected to the dipole feed line are integrally formed on the same dielectric substrate, so that heat generated from the semiconductor circuit is generated. It has the effect of radiating heat.

Further, a first printed diball antenna in which a dipole and a dipole feed line are printed on the same plane on one side or both sides of a dielectric substrate, and the above-mentioned second printed dipole antenna are provided as a first. By arranging the dielectric substrate of the dipole feed line of the printed dipole antenna and the dielectric substrate of the dipole feed line of the second printed dipole antenna in parallel, a printed dipole of two orthogonal polarizations This has the effect of supplying power to the antenna.

Further, by providing one or a plurality of slits in the printed dipole of the printed dipole antenna, a radio wave having a polarization component parallel to the plane of the dielectric substrate on which the dipole feed line is printed can be transmitted. The effect is that it can be suppressed.

Further, by providing one or more slits on a dipole on which one side or both sides of the dielectric substrate are printed with a dipole and a dipole feed line in the same plane, a bias perpendicular to the plane of the dielectric substrate can be obtained. There is an effect that the radio wave of the wave component can be suppressed.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a printed dipole antenna according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a printed dipole antenna according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a printed dipole antenna according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram of a printed dipole antenna according to a fourth embodiment of the present invention.

FIG. 5 is a configuration diagram of a printed dipole antenna according to a fifth embodiment of the present invention.

FIG. 6 is a configuration diagram of a conventional printed dipole antenna.

[Explanation of symbols]

 1 Dielectric Plate 2 Dipole 3 Dipole Feed Line 4 Ground Conductor 5 Coaxial Plug 6 Through Hole 8 Semiconductor Circuit 9 Microstrip Line 11 Slit 12 Polarization Vector 21 Dielectric Plate 22 Dipole Feed Line 24 Ground Conductor 25 Coaxial Plug 29 strip line

Claims (5)

[Claims] 1. A dipole antenna in which a dipole is printed on one side or both sides of a dielectric substrate, another dielectric substrate is provided on a plane orthogonal to the plane on which the dipole is printed, and one side of the dielectric substrate or A printed dipole antenna characterized in that a dipole feed line is printed on both sides, and the dipole and the dipole feed line are connected along a through hole provided in the thickness direction of a dielectric substrate on which the dipole is printed. 2. The printed dipole antenna according to claim 1, wherein the dipole feed line and a semiconductor circuit connected to the dipole feed line are integrally formed on the same dielectric substrate. 3. The printed dipole antenna according to claim 1, wherein the printed dipole is provided with one or a plurality of slits. 4. A first printed dipole antenna in which a dipole and a dipole feed line are printed on the same plane on one side or both sides of a dielectric substrate, and a second printed dipole antenna according to claim 1. 1. A printed dipole antenna, wherein the dielectric substrate of the dipole feed line of the first printed dipole antenna and the dielectric substrate of the dipole feed line of the second printed dipole antenna are arranged in parallel. 5. A printed dipole antenna in which a dipole and a dipole feed line are printed on the same plane on one side or both sides of a dielectric substrate, wherein the printed dipole is provided with one or a plurality of slits. Printed dipole antenna.