JP3182065B2 - Linear / circular polarization input waveguide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear / circularly polarized wave input waveguide for transmitting a polarized wave input or emitted from a primary radiator, and more particularly to a linear / circularly polarized wave input waveguide used for a satellite broadcast receiving converter. It relates to a circularly polarized input waveguide.

[0002]

2. Description of the Related Art Generally, in an input waveguide, a polarized wave input from a primary radiator is roughly classified into a case of a linearly polarized wave and a case of a circularly polarized wave. LNB (Low Noise Bloc
kdownconverter) Ideally, the receiving probe is powered by linear polarization. Therefore, when a circularly polarized wave is input, the circularly polarized wave is converted from the primary radiator to the input waveguide and converted into a linearly polarized wave until the power is supplied to the LNB receiving probe. Need to be Hereinafter, embodiments of the related art will be described with reference to the drawings.

FIG. 14 is an explanatory diagram of a conventional input waveguide for receiving horizontal linear polarization and vertical linear polarization. FIG. 15 is an explanatory diagram of a conventional input waveguide when receiving a right-handed circularly polarized wave and a left-handed circularly polarized wave.

Referring to FIG. 14, an input waveguide 130 has:
It includes an LNB body 131, an input waveguide section 132, and a primary radiator 133. The LNB main body 131 includes a reception probe 134a and a reception probe 134b. The receiving probe 134a is installed on the same straight line as the horizontal linearly polarized wave 135a, that is, in the horizontal direction, and the receiving probe 134b is installed on the same straight line as the vertical linearly polarized wave 135b, that is, in the vertical direction. Receive probe 134
a and the receiving probe 134b are connected to a microstrip circuit (not shown).

Next, the operation of the input waveguide 130 will be described. Horizontal linear polarization 135a and vertical linear polarization 135b
Is input from the primary radiator 133 to the input waveguide section 132, passes through the input waveguide section 132, and is connected to the microstrip circuit of the LNB main body 131.
4a and 134b. Here the receiving probe 13
4a receives the horizontal linear polarization 135a transmitted on the horizontal plane, and the receiving probe 134b receives the vertical linear polarization 135b transmitted on the vertical plane.

Referring to FIG. 15, the configuration of a conventional input waveguide for receiving circularly polarized waves will be described. The basic configuration is the same as that of the conventional input waveguide 130 when receiving the above-mentioned linear polarization. The conventional input waveguide 140 for receiving circularly polarized waves includes an LNB main body 131, an input waveguide section 132, a primary radiator 133, and a dielectric plate 1
46. The receiving probe 134a and the receiving probe 134b are respectively connected to a microstrip circuit (not shown). The receiving probe 134a is installed on the same straight line as the horizontal linearly polarized wave 134a, that is, in the horizontal direction, and the receiving probe 134b is installed on the same straight line as the vertical linearly polarized wave 135b, that is, in the vertical direction.

Next, the operation of the input waveguide 140 will be described.
As described above, when the circularly polarized waves 145a and 145b input from the primary radiator 133 are fed by the receiving probes 134a and 134b connected to a microstrip circuit (not shown), they become linearly polarized. Need to be converted. In this conventional example, as a means, FIG.
In the input waveguide section 132 disposed between the primary radiator 133 and the LNB main body 131 having the structure of FIG. 4, a dielectric plate 146 is provided at a position inclined by 45 ° with respect to the reception probes 134a and 134b. By inserting and shifting the phase of the circularly polarized wave by 90 °, the circularly polarized wave is converted into a linearly polarized wave. On this occasion,
The receiving probe 134a receives the linearly polarized light obtained by converting the right-handed circularly polarized wave in the horizontal direction. Further, the receiving probe 134b receives a linearly polarized wave in which the left-hand circularly polarized wave is converted in the vertical direction.

[0008]

Since both linearly polarized light and circularly polarized light are originally assigned together with the frequency depending on the country or region, the same input waveguide can be used in principle. It does not transmit linear or circular polarization.

[0009] However, there is a case where a certain period is determined to switch from linearly polarized wave reception to circularly polarized wave reception. In this case, as described above in the related art, it is possible to cope with the problem by inserting a dielectric plate inside the input waveguide section, but for that purpose, it is attached to the primary radiator. It is necessary to remove the cover (cap), and it is also necessary to carry out the mounting work after the insertion, which is very troublesome. Further, at this time, the direction and angle of the antenna must also be changed, and work by a specialized worker is required.

[0010] Even if only circularly polarized waves are received, the shape of the input waveguide section (also referred to as a converter) for converting circularly polarized waves into linearly polarized waves is examined for an optimal shape depending on the frequency. Need to be designed. In other words, the primary radiator and LNB
Even if the main body has the same shape, the shape of one converter cannot be used for all circularly polarized waves in the world. Therefore, for each frequency to be received, it is necessary to produce a primary radiator in which only the shape of the input waveguide section that converts circularly polarized waves into linearly polarized waves and a chassis of the LNB body section,
There are many wasteful parts, such as the need for a mold for the chassis for each frequency to be received.

[0011] Further, in the background that satellite broadcasting will increase in the future, if both a linearly-polarized satellite and a circularly-polarized satellite are launched adjacent to each other in the same area, 1
Another problem is that several types of satellite broadcasts cannot be received by an antenna unit having two input waveguides.

Therefore, according to the present invention , when switching from linearly polarized wave reception to circularly polarized wave reception, work by a specialized worker such as work of attaching and detaching a dielectric plate, and changing the direction and angle of an antenna is required. It is possible to switch easily without having to use a single unit, and to manufacture a variety of input waveguides at a minimum cost by newly manufacturing only the conversion unit. ,
An object of the present invention is to provide an input waveguide capable of receiving several types of satellite broadcasts.

[0013]

[0014]

[0015]

Another object of the present invention is to provide a lightweight input waveguide.
It is to provide.

Still another object of the present invention is to provide an input waveguide capable of switching from linearly polarized wave reception to circularly polarized wave reception more easily .

[0018]

Means for Solving the Problems The present linear-circular polarization input waveguide in accordance with the invention, the primary radiator is coupled to the primary radiator, an input waveguide portion for guiding the polarized into position is coupled to the input waveguide section, and the LNB body for receiving the polarized guided by the input waveguide section, mounted et is the input waveguide section, when the polarization is linear polarization, a first position for passing the linear <br/> polarization without causing interference, when the polarization is circular polarization, or a second position for converting a circularly polarized wave to linear polarization including a member capable of changing its attitude so you can take one posture. The member is outside the input waveguide
Has a rotation center, and protrudes from the inner surface shape of the input waveguide section.
Position and the inner shape of the input waveguide
Can take any one of the postures that form the protrusion
With a rotating drum that can change its posture
There is a feature.

[0019]

[0020]

[0021]

Preferably, the member is made of a dielectric material .
You.

Preferably, the apparatus further includes driving means connected to the member for driving the member .

According to the linear / circularly polarized wave input waveguide according to the present invention , the polarization is guided to a predetermined position by the function of the input waveguide section connected to the primary radiator. When the member is in the first position by the action of the member attached to the portion, when the polarization is linearly polarized, the member allows the linearly polarized wave to pass without causing interference, and When the posture is taken, when the polarization is circular polarization, the circular polarization is converted to linear polarization.

Further, a member which is attached to the input waveguide section, by the action of the rotating drum having a rotation center to the outside of the input waveguide section, the rotary drum, the inner surface of the input waveguide section When the posture is such that no protrusion is formed with respect to the shape, the linearly polarized wave passes through the input waveguide portion without causing interference, and the rotating drum projects with respect to the inner surface shape of the input waveguide portion. In the case of taking the attitude of forming, when the polarization is a circular polarization, it is converted to a linear polarization.

[0026]

[0027]

Further, by the action of the made of a dielectric material which is attached to the input waveguide section member, with straight-circular polarization input waveguide is lighter, when the member takes the first posture When the linearly polarized wave passes through the input waveguide section without causing interference and the member takes the second posture, the circularly polarized wave is converted into the linearly polarized wave.

Further , by the action of the driving means connected to the member and driving the member, the member is positioned so that the linearly polarized wave passes through the input waveguide section without causing interference, and the circularly polarized wave is converted to the linearly polarized wave. The driving is performed so as to change the posture so as to take one of the converted postures.

As described above, according to the invention of the present application, the inner surface shape of the input waveguide can be switched with one touch on the side surface portion of the input waveguide or concentrically with the center of the input waveguide portion. Since the structure is provided, two different polarizations or a number of polarizations having different frequencies can be transmitted with good performance by one input waveguide.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 12 is a perspective view showing the overall configuration of the linear / circular polarization input waveguide of the present invention. Embodiment 1 to be described later
14 shows a linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception according to the fourth embodiment.

Referring to FIG. 12, a linear / circularly polarized wave input waveguide 120 includes a primary radiator 12 receiving externally polarized waves,
An input waveguide unit 11 that is connected to the primary radiator 12 and allows the polarization from the primary radiator 12 to pass therethrough, and a polarized wave that is connected to the input waveguide unit 11 and guided from the input waveguide unit 11 And the LNB main body 121 to receive. The input waveguide portion 11 is provided on a side surface on the outside of the input waveguide portion 11 and provided on a support rib (not shown) provided in a predetermined direction. And its position can be changed by rotation around a rotary drum shaft (not shown) provided at the position of the rotary drum shaft, and becomes flush with the inner surface 11a of the input waveguide section 11. The rotating drum 13 has a predetermined shape including a surface that can take such a posture and a surface 13a that can take a posture that is located inside the inner surface 11a of the input waveguide unit 11.

FIGS. 1 and 2 show a straight line and a straight line according to the first embodiment.
It is sectional drawing of a circularly polarized wave input waveguide. FIG. 1 shows a linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception, and FIG. 2 shows a linear / circularly polarized wave input waveguide at the time of linearly polarized wave reception.

Referring to FIG. 1 and FIG. 2, a linear / circularly polarized wave input waveguide 10 is a primary radiator 1 which receives a polarized wave from the outside.
2, an input waveguide unit 11 connected to the primary radiator 12 and passing the polarized wave from the primary radiator 12, and connected to the input waveguide unit 11 and guided from the input waveguide unit 11. An LNB main body (not shown) for receiving a polarized wave. The LNB main body includes a receiving probe 16 installed in directions 16a, 17a orthogonal to each other, and a receiving probe 17. The input waveguide section 11 is on the outer side surface 11b of the input waveguide section 11 and is at 45 ° with respect to the installation direction 16a of the receiving probe 16.
And the installation direction 17 of the receiving probe 17
a supporting rib 15 provided in a direction 15a forming an angle of 45 degrees with the rotating drum shaft 14; a rotating drum shaft 14 provided on the supporting rib 15 at a position outside the side surface 11b; The orientation can be changed by the following rotation, and the surface 1 that can assume the orientation shown in FIG. 2 so as to be flush with the inner surface 11a of the input waveguide section 11
A rotating drum 13 made of a dielectric material having a predetermined shape including a portion 3b and a surface 13a which can be in the position shown in FIG. 1 and which is located inside the inner surface 11a of the input waveguide portion 11.
And

Next, the operation of the linear / circularly polarized wave input waveguide according to the first embodiment will be described with reference to FIGS. The linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception will be described with reference to FIG. The rotating drum 13 includes the input waveguide unit 1.
The first inner surface 11a is in a posture of forming a protrusion. The circularly polarized wave input from the primary radiator 12 to the input waveguide unit 11 is converted into a linearly polarized wave and guided to the LNB main body.

With reference to FIG.
The circularly polarized wave input waveguide will be described. Rotating drum 13
Is rotated about the rotary drum shaft 14 from the position shown in FIG.
1a does not form a protrusion. The linearly polarized wave input from the primary radiator 12 to the input waveguide unit 11 passes through the input waveguide unit 11 without causing interference,
Guided to the LNB body.

As described above, according to the linear / circularly polarized wave input waveguide of the first embodiment, the engagement member 13 having the rotating drum mechanism allows the linear polarized wave reception and the circular polarization reception to be performed. Switching between them can be easily performed.

Next, a linear / circularly polarized wave input waveguide according to the second embodiment will be described with reference to FIGS. 3 and 4 are cross-sectional views of the linear / circularly polarized wave input waveguide according to the second embodiment. FIG. 3 shows a linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception, and FIG. 4 shows an input waveguide at the time of linearly polarized wave reception.

Referring to FIGS. 3 and 4, linear / circularly polarized wave input waveguide 30 is a primary radiator 1 which receives a polarized wave from the outside.
2, an input waveguide unit 31 connected to the primary radiator 12 and passing the polarized wave from the primary radiator 12, and connected to the input waveguide unit 31 and guided from the input waveguide unit 31 An LNB main body (not shown) for receiving a polarized wave. The LNB main body includes a receiving probe 16 installed in directions 16a, 17a orthogonal to each other, and a receiving probe 17. The input waveguide section 31 is on the outer side surface 31b of the input waveguide section 31 and is located at 45 ° with respect to the installation direction 16a of the receiving probe 16.
And the installation direction 17 of the receiving probe 17
and a support rib 36 provided in a direction 15a at an angle of 45 ° to the support rib 36, and a circular / linear conversion rib 35 made of a dielectric material slidably engaged with the support rib 36. . The circular / linear conversion rib 35 includes an engaging portion 35 a that engages with a hole provided on the side surface of the input waveguide portion 31.

Next, the operation of the linear / circularly polarized wave input waveguide according to the second embodiment will be described with reference to FIGS. With reference to FIG. 3, a description will be given of a linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception. The circular-to-linear conversion rib 35 has a posture in which a projection is formed with respect to the inner surface 31a of the input waveguide section 31, and the circularly polarized wave input from the primary radiator 12 to the input waveguide section 31 is , Is converted to linearly polarized light and guided to the LNB main body.

With reference to FIG.
The circularly polarized wave input waveguide will be described. The circular / straight conversion rib 35 slides along the support rib 36 from the posture shown in FIG.
1a does not form a protrusion. The linearly polarized wave input from the primary radiator 12 to the input waveguide unit 31 passes through the input waveguide unit 31 without causing interference,
Guided to the LNB body.

As described above, according to the linear / circularly polarized wave input waveguide of the second embodiment, the interlock between the linearly polarized wave reception and the circularly polarized wave reception is achieved by the engagement member 35 having the slide mechanism. Switching can be easily performed.

Next, a linear / circularly polarized wave input waveguide according to the third embodiment will be described with reference to FIG. FIG. 5 is a sectional view of a linear / circularly polarized wave input waveguide according to the third embodiment. FIG. 5A shows a linear / circularly polarized wave input waveguide at the time of linearly polarized wave reception, and FIGS. 5B and 5C show linear / circularly polarized wave reception at the time of circularly polarized wave reception. 3 shows a wave input waveguide.

Referring to FIG. 5, input waveguide 50 is connected to a primary radiator (not shown) that receives a polarized wave from the outside, and is connected to the primary radiator, and passes the polarized wave from the primary radiator. , An input waveguide section 51 having a circular cross section, and an L connected to the input waveguide section 51 and receiving the polarization guided from the input waveguide section 51.
NB main body (not shown). The input waveguide unit 51
At the center of the input waveguide 51, the input waveguide 51
A rotating flange 52 made of a dielectric material and having a circular cross section, rotatably engaged concentrically with. Rotating flange 52
Includes a conversion rib 53 that converts a circularly polarized wave into a linearly polarized wave.
The LNB main body includes a receiving probe 16 installed in directions 16a, 17a orthogonal to each other, and a receiving probe 17.

Next, the operation of the linear / circularly polarized wave input waveguide according to the third embodiment will be described with reference to FIG. With reference to FIG. 5A, a description will be given of a linear / circularly polarized wave input waveguide at the time of linearly polarized wave reception. Conversion rib 53 on rotating flange 52
Is in the same direction as the receiving probe 17 for receiving linearly polarized waves,
That is, since the linearly polarized waves are located in the same direction as the direction of the linearly polarized waves, no interference occurs in the linearly polarized waves. In other words, since the rotating flange 52 has a posture that allows the linearly polarized wave to pass through without causing interference, the linearly polarized wave causes the input waveguide 5 without causing interference.
It passes through 0 and is led to the LNB main body.

Referring to FIG. 5B and FIG. 5C,
The linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception will be described. The conversion rib 53 on the rotating flange 52 is
6 is located at an angle of 45 ° with the installation direction 16a, and the installation direction 17a of the probe 17 is also 45 degrees.
° in the direction of the angle. Therefore, the circularly polarized wave is converted into a linearly polarized wave having the same direction as the installation direction 16a of the probe 16 and a linearly polarized wave having the same direction as the installation direction 17a of the probe 17. That is, since the rotating flange 52 has a posture of converting a circularly polarized wave into a linearly polarized wave, the inputted circularly polarized wave is
Is converted into linearly polarized light when passing through the LNB and guided to the LNB main body. FIG. 5B shows the input waveguide when receiving right-handed circularly polarized waves, and FIG. 5C shows the input waveguide when receiving left-handed circularly polarized waves.

As described above, according to the linear / circularly polarized wave input waveguide of the third embodiment, the engagement between the linearly polarized wave reception and the circularly polarized wave reception is achieved by the engaging member 52 having the rotating flange mechanism. Can be easily switched.

Next, a linear / circularly polarized wave input waveguide according to a fourth embodiment will be described with reference to FIGS. 6 and 7 are diagrams showing a configuration of a linear / circularly polarized wave input waveguide according to the fourth embodiment.

Referring to FIGS. 6 and 7, a fourth embodiment will be described.
Is basically the same as the configuration of the first embodiment described with reference to FIGS. The linear / circular polarization input waveguide 60 includes a primary radiator 12 that receives a polarization from the outside,
An input waveguide unit 61 connected to the primary radiator 12 and passing the polarized wave from the primary radiator 12, and a polarized wave connected to the input waveguide unit 61 and guided from the input waveguide unit 61. And a receiving LNB main body (not shown). The LNB main body includes a receiving probe 16 installed in directions 16a, 17a orthogonal to each other, and a receiving probe 17. The input waveguide section 61 is on the outer side surface 61b of the input waveguide section 61, forms an angle of 45 ° with the installation direction 16a of the reception probe 16, and has the installation directions 17a and 4
A support rib 15 provided in the direction of the direction 15a forming an angle of 5 °, a rotary drum shaft 14 provided on the support rib 15 at a position outside the side surface 61b, and a center around the rotary drum shaft 14; The orientation can be changed by the rotation of the input waveguide section 61, and the input waveguide section 6 has a surface 13 b that can be in the same plane as the inner surface 61 a of the input waveguide section 61.
6, which has a predetermined shape including a surface 13a which can be in the position shown in FIG.
A rotating drum 13 made of a dielectric material and a rotating drum shaft 1
4, a gear train 62 mounted coaxially with
A gear train 63 installed at a position where the tip of the motor 65 meshes with the gear train 62; and a BS (Broadcasting Sat).
ellite) The amount of antenna rotation transmitted from the tuner,
And a control unit 64 for converting a signal of the rotation direction into an instruction of the rotation amount and the rotation direction of the motor 65.

Next, the operation of the linear / circularly polarized wave input waveguide according to the fourth embodiment will be described. The gear train 63 attached to the tip of the motor 65 is rotated by the control unit 64 according to the rotation amount and the rotation direction of the antenna, so that the gear train 62 connected to the rotating drum shaft 14 meshed with the gear train 63 rotates. Then, the rotating drum 13 rotates, and the angle is adjusted to a predetermined angle according to the direction of the antenna that receives the linearly polarized wave and the circularly polarized wave.

As described above, according to the linear / circularly polarized wave input waveguide of the fourth embodiment, the engagement member 13 having the rotating drum mechanism is driven by the motor 65 to receive the linearly polarized wave. It is possible to automatically switch between and reception of circularly polarized waves.

Next, a linear / circularly polarized wave input waveguide according to a fifth embodiment will be described with reference to FIG. FIG. 8 is a diagram showing a configuration of a linear / circularly polarized wave input waveguide according to the fifth embodiment.

Referring to FIG. 8, the configuration of the fifth embodiment is as follows.
The configuration is basically common to the configuration of the second embodiment described with reference to FIGS. The linear / circularly polarized input waveguide 80 is a primary radiator 12 that receives a polarized wave from the outside, and an input waveguide that is connected to the primary radiator 12 and allows the polarized wave from the primary radiator 12 to pass therethrough. A portion 81 and an LNB main body (not shown) connected to the input waveguide portion 81 and receiving the polarization guided from the input waveguide portion 81 are included. The LNB body is in the direction 1
6a and 17a include a receiving probe 16 and a receiving probe 17. The input waveguide portion 81 is on the outer side surface 81b of the input waveguide portion 81, and
6, and a support rib 36 provided in a direction 15a that forms an angle of 45 ° with the installation direction 17a of the receiving probe 17 and forms an angle of 45 ° with the installation direction 16a of the receiving probe 17, and slides with respect to the support rib 36. A circular-to-linear conversion rib 85 made of a dielectric material, a motor 86,
And a control unit 88 that converts signals of the rotation amount and the rotation direction of the antenna, which are transmitted from the BS tuner, into signals of the rotation amount and the rotation direction of the motor 65.
And The circular / straight conversion rib 85 is connected to the input waveguide 81.
And a toothed rib 89 that meshes with the gear train 87.

Next, the operation of the linear / circularly polarized wave input waveguide according to the fifth embodiment will be described. The gear train 87 attached to the tip of the motor 86 is rotated by the control unit 88 in accordance with the amount of rotation and the direction of rotation of the antenna, so that the gear train rib formed by a part of the conversion rib 85 meshed with the gear train 87. 89 is
By moving the support rib 36 left and right with respect to the support rib 36, the position of the circular / linear conversion rib 85 integrally formed with the tooth row rib 89 slides in the direction of the antenna receiving linear polarization and circular polarization. It is adjusted to a predetermined position corresponding to the position. That is, referring to FIG. 8A, when the motor 86 rotates to the left in accordance with the instruction of the control unit 88, the tooth row rib 89 meshing with the gear row 87 slides to the right, and the circular / linear conversion is performed. The rib 85 is provided on the inner surface 8 of the input waveguide 81 so that the engagement portion 85 a
1a is adjusted to a position where a protrusion is formed. Also,
The rotation of the motor 86 to the right causes the tooth ribs 89 meshing with the gear train 87 to slide to the left, and the circular-to-linear conversion ribs 85 do not form a projection in which the engaging portion 85a protrudes from the inner surface 81a. Adjusted to the position.

As described above, according to the linear / circularly polarized wave input waveguide of the fifth embodiment, the engagement member 85 having the slide mechanism is driven by the motor 86 so that the linearly polarized wave reception can be performed. Switching to and from circularly polarized wave reception can be performed automatically.

Next, a linear / circularly polarized wave input waveguide according to a sixth embodiment will be described with reference to FIG. FIG. 9 is a diagram showing a configuration of a linear / circularly polarized wave input waveguide according to the sixth embodiment.

Referring to FIG. 9, an input waveguide 90 is connected to a primary radiator (not shown) which receives a polarized wave from the outside and a primary radiator, and a polarized wave from the primary radiator is provided. , An input waveguide section 51 having a circular cross section, and an L connected to the input waveguide section 51 and receiving a polarized wave guided from the input waveguide section 51.
NB main body (not shown). The input waveguide unit 51
At the center of the input waveguide 51, the input waveguide 51
And a rotating flange 92 of a dielectric material concentrically and rotatably engaged. The rotating flange 92 includes a conversion rib 93 made of a dielectric material that converts a circularly polarized wave into a linearly polarized wave,
A gear train 94 provided on the outer periphery of the rotating flange 92, a motor 96, and a control unit that converts signals of the rotation amount and the rotation direction of the antenna transmitted from the BS tuner into instructions of the rotation amount and the rotation direction of the motor 96. 97 and a gear train 95 attached to the tip of the motor 96 and meshed with the gear train 94. The LNB main body has directions 16a, 1
7a and the receiving probe 1
7 is included.

Next, the operation of the linear / circularly polarized wave input waveguide according to the sixth embodiment will be described with reference to FIG. By rotating the gear train 95 attached to the tip of the motor 96, the gear train 94 provided on the outer periphery of the rotating flange 92 meshed with it rotates, and the rotating flange 92 converts linearly and circularly polarized waves. It rotates by a predetermined angle according to the direction of the receiving antenna. The adjustment amount of these structures directly connected to the motor 95 is, for example, BS (Broadcasting
A signal of the rotation amount and the rotation direction of the antenna transmitted from the tuner is sent to the control unit 97 by the motor 96.
The rotation amount and the direction of rotation are converted into instructions.

As described above, according to the linear / circularly polarized wave input waveguide of the sixth embodiment, the engagement member 92 having the rotating flange mechanism is driven by the motor 96, so that the linearly polarized wave reception can be performed. Switching to and from circularly polarized wave reception can be performed automatically.

Next, a linear / circularly polarized wave input waveguide according to the seventh embodiment will be described with reference to FIGS. FIG. 10 is a sectional view of the linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception, and FIG. 11 is a sectional view of the linear / circularly polarized wave input waveguide at the time of linearly polarized wave reception.

Referring to FIGS. 10 and 11, a linear / circularly polarized wave input waveguide 100 is connected to a primary radiator 12 that receives a polarized wave from the outside and a primary radiator 12 connected to the primary radiator 12. Vessel 1
And an LNB main body (not shown) connected to the input waveguide unit 101 and receiving the polarization guided from the input waveguide unit 101. Including. The LNB body is arranged in directions 16a, 17a orthogonal to each other.
, A receiving probe 16 and a receiving probe 17 installed at the same time. The input waveguide unit 101 is on the outer side surface 101b of the input waveguide unit 101, forms an angle of 45 ° with the installation direction 16a of the reception probe 16, and has the installation directions 17a and 45 Direction 15 at an angle of °
The support rib 36 provided in the direction of a, the circular / linear conversion rib 35 slidably engaged with the support rib 36 and made of a metal having magnetic properties such as iron, A support arm 105 mounted at a contact position,
A spring 107 is inserted into the support rib 36 so as to be located between the circular / linear conversion rib 105 and the support arm 35, and biases the circular / linear conversion rib 35 toward the input waveguide unit 101; An electromagnet 106 attached to the inner surface of the support arm 105 with which the tip of the rib 36 abuts.
The circular / linear conversion rib 35 includes an engaging portion 35a that engages with a hole 35c provided on the side surface of the input waveguide portion 101.

Next, the operation of the linear / circularly polarized wave input waveguide according to the seventh embodiment will be described. Referring to FIG.
When the switch 6 is turned off, the spring 107 inserted into the support rib 36 presses the support arm 105 to cause the conversion rib 35 to move outside the input waveguide portion 101 of the input waveguide 100. Pressed against the side of

Referring to FIG. 11, when electromagnet 106 is turned on, conversion rib 35 is attracted to electromagnet 106 fixed to support arm 105.

As described above, according to the linear / circularly polarized wave input waveguide of the seventh embodiment, since the engaging member 35 having the slide mechanism is driven by the electromagnet 106, linearly polarized wave reception and circular Switching to and from polarization reception can be performed more easily.

FIG. 13 is a diagram showing an example of a driving device of the antenna, and is an example of a driving mechanism connected to each control unit of the linear / circularly polarized wave input waveguide shown in FIGS. It is shown.

As described above, according to the invention of the present application, when switching between linearly polarized wave reception and circularly polarized wave reception is performed, operations such as mounting and removing the dielectric plate, changing the direction and angle of the antenna, and the like are performed. It is possible to easily switch without requiring the work of specialized workers, and since only the conversion part can be newly manufactured, it is possible to manufacture a wide variety of linear and circularly polarized input waveguides at the minimum cost. In addition, it is possible to obtain an effect that a plurality of types of satellite broadcasts can be received by one antenna unit.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view taken along a line AA ′ of a linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception according to the first embodiment. FIG. 3B is a front sectional view of the linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception according to the first embodiment.

FIG. 2A is a cross-sectional view taken along the line AA ′ of the linear / circularly polarized wave input waveguide at the time of linearly polarized wave reception according to the first embodiment. FIG. 3B is a front sectional view of the linear / circularly polarized wave input waveguide at the time of linearly polarized wave reception according to the first embodiment.

FIG. 3A is a cross-sectional view taken along a line AA ′ of the linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception according to the second embodiment. (B) It is sectional drawing of the front of the linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception of Embodiment 2.

FIG. 4A is a cross-sectional view taken along the line AA ′ of the linear / circularly polarized wave input waveguide at the time of linearly polarized wave reception according to the second embodiment. (B) It is sectional drawing of the front of the linear and circularly polarized wave input waveguide at the time of linearly polarized wave reception of Embodiment 2.

FIG. 5A is a cross-sectional view of a linear / circularly polarized wave input waveguide at the time of linearly polarized wave reception according to the third embodiment. (B) It is sectional drawing of the linear / circularly polarized wave input waveguide at the time of the right circularly polarized wave reception of Embodiment 3. (C) is a sectional view of a linear / circularly polarized wave input waveguide at the time of receiving left circularly polarized wave according to the third embodiment.

FIG. 6A is an explanatory diagram of a drive mechanism of a linear / circularly polarized wave input waveguide according to a fourth embodiment. (B) It is sectional drawing of the front of the linear / circular polarization input waveguide of Embodiment 4. FIG.

FIG. 7A is an explanatory view of a drive mechanism of a linear / circularly polarized wave input waveguide according to a fourth embodiment. (B) It is sectional drawing of the front of the linear / circular polarization input waveguide of Embodiment 4. FIG.

FIG. 8A is an explanatory diagram of a drive mechanism of a linear / circularly polarized wave input waveguide according to a fifth embodiment. (B) It is sectional drawing of the front of the linear / circular polarization input waveguide of Embodiment 5. FIG.

FIG. 9A is an explanatory diagram of a drive mechanism for a linear / circularly polarized wave input waveguide according to the sixth embodiment. (B) It is sectional drawing of the front of the linear and circularly polarized wave input waveguide of Embodiment 6.

FIG. 10A is a cross-sectional view taken along the line AA ′ of the linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception according to the seventh embodiment. (B) It is sectional drawing of the front of the linear / circularly polarized wave input waveguide at the time of circularly polarized wave reception of Embodiment 7.

FIG. 11A is a cross-sectional view taken along the line AA ′ of the linear / circularly polarized wave input waveguide at the time of linearly polarized wave reception according to the seventh embodiment. (B) It is sectional drawing of the front of the linear / circularly polarized wave input waveguide at the time of the linearly polarized wave reception of Embodiment 7.

FIG. 12 is a perspective view showing an overall configuration of a linear / circular polarization input waveguide according to the first and fourth embodiments.

FIG. 13 is a view illustrating a fourth embodiment, a fifth embodiment, and a sixth embodiment;
FIG. 27 is a diagram illustrating an example of a driving mechanism of an antenna unit according to the seventh embodiment.

FIG. 14A is an explanatory diagram of a conventional input waveguide at the time of receiving linearly polarized wave. (B) It is explanatory drawing at the time of linear polarization reception of the conventional input waveguide.

FIG. 15A is an explanatory diagram of a conventional input waveguide at the time of circularly polarized wave reception. (B) It is explanatory drawing at the time of circular polarization reception of the conventional input waveguide.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Input waveguide part 12 Primary radiator 13 Rotating drum 14 Rotating drum shaft 15 Support rib

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-94907 (JP, A) JP-A-5-206720 (JP, A) JP-A-62-189801 (JP, A) JP-A-63-1987 114301 (JP, A) JP-A-4-54002 (JP, A) JP-A-5-55806 (JP, A) JP-A-6-216638 (JP, A) JP-A-5-206701 (JP, A) JP-A-50-151041 (JP, A) JP-A-63-155801 (JP, A) JP-A-7-58542 (JP, A) JP-A-7-29917 (JP, U) JP-A-7-20701 (JP, U) JP 37-3404 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01P 1/10 H01P 1/165 H01P 1/17 H01Q 3/08 H01Q 13 / 02

Claims (3)

(57) [Claims] A primary radiator coupled to the primary radiator for guiding polarization to a predetermined position; a primary radiator coupled to the primary radiator; and an input waveguide coupled to the input waveguide and guided by the input waveguide. An LNB main body for receiving the polarized wave, a first LNB attached to the input waveguide section, and passing the linearly polarized wave without causing interference when the polarized wave is a linearly polarized wave. Attitude, and when the polarization is a circular polarization, the attitude can be changed so that the attitude can be any one of a second attitude for converting the circular polarization to a linear polarization. a member viewed including the member have a rotational center to the outside of the input waveguide section
And forming a projection with respect to the inner surface shape of the input waveguide section.
No posture, and a projection against the inner surface shape of the input waveguide section
So that it can take either one of the postures that form
It is a rotating drum that can change its posture,
Linear / circular polarization input waveguide. 2. The linear / circularly polarized wave input waveguide according to claim 1, wherein the member is made of a dielectric material . 3. The member is connected to and drives the member.
2. The linearly and circularly polarized input waveguide according to claim 1 , further comprising a driving unit .