JPS6281130A - Radio communication equipment - Google Patents

Abstract

PURPOSE:To attain rational mounting by providing a transmission section and a reception section in the same case internally, making the polarized face of a transmission radio wave and a reception radio wave different by 90 deg., using a common input/output waveguide axis as a turning shaft, supporting the entire case turnably so as to convert the polarized face and to attain small size and high density for a large output radio communication equipment. CONSTITUTION:The transmission section 32 and the reception section 31 are provided in the same case and the polarized plane of the transmission/reception radio waves differs by 90 deg. and the transmission/reception radio waves are sent through a common waveguide 58. In this case, the center prolonged axis of the waveguide 58 is penetrated through the case, the case is supported and turned around the shaft to convert the mutual polarized wave directions. Since the transmission section 32 and the reception section 31 are mounted at the bottom mainly in the main body section 33 while being divided neatly to the right/left, the assembling and check are facilitated and the water-proof is provided as a whole in a very small size, then the equipment is fitted at the outdoor antenna.

Description

[Detailed Description of the Invention] [Summary] The transmitting section and the receiving section of a wireless communication device are housed in the same housing, and the planes of polarization of the transmitted radio waves and the received radio waves are made to differ by 90 degrees, and a common input/output waveguide is used. The entire housing is rotatably supported with @ as the rotation axis, so that the plane of polarization can be changed.

[Industrial application field]

The present invention relates to a wireless communication device in which a transmitting section and a receiving section are housed in the same housing, and particularly to a housing mounting structure that allows easy polarization switching.

Wireless devices that use ultra-high frequencies ranging from microwave to millimeter wave bands have recently become solid-state even in the ultra-high frequency range, becoming smaller and more densely packaged, and the heat generated inside the devices has become more effective. Heat is now dissipated. - 10,000, communications are performed with the polarization planes of the transmitted radio waves and the received radio waves differing by 90 degrees, but the polarization planes may be selectively converted as necessary.

[Conventional technology]

In order to perform remote wireless communication using all communication satellites, it is necessary to increase the transmission output, and the received signal radio waves must also be amplified. Furthermore, if necessary, the planes of polarization may be made to coincide with each other, and the direction in space may be changed as appropriate.

FIG. 8 shows a schematic perspective view of a conventional wireless communication device. Receiver unit [12, transmitter 13K attached to frame 11]
The main part thereof is housed therein, and it is connected to the adjacent high frequency amplifying device 14 via a transmitting device 13 and a high frequency cable 15.

The high frequency output signal of the high frequency amplification device 14 is transmitted into the waveguide 16 and reaches the polarization splitter 17 . This polarization demultiplexer 171
The signal is then further transmitted to a waveguide 18 to an antenna (not shown). - The high frequency input signal received from the above antenna is transmitted through the waveguide 18, reaches the polarization splitter 17, and is input to the receiving device 12 via the other waveguide 19 connected to the polarization splitter. Ru.

For example, the high frequency output is determined to be 14 GHz and the spatial propagation mode is vertically polarized, and the high frequency input is determined to be 12 GHz and the spatial propagation mode is horizontally polarized. Therefore, the waveguide 18
For example, a device with a square cross section or a circular cross section is used that can transmit both of these shapes, and the polarization splitter 17 separates the output and input of these two signals.

Each of the above devices includes a signal line, a control line, and 1! Although many source lines are connected, these are omitted from the illustration. These devices are each individually covered with a cover and have a cubic shape as shown in the figure, but since they are not suitable for spraying outside the vehicle, they are housed indoors or in a suitable windproof and rainproof enclosure.

A received signal processing circuit is included in the receiving device 12, and a received signal processing circuit is included in the transmitting device 13.
The main parts of the transmission signal processing circuit up to the final output are accommodated, and the heat generated inside is sufficiently dissipated to maintain reliability.

The high frequency amplifier 14 is a traveling wave tube (TWT) as an amplifier.
is used to amplify and output the high frequency signal from the transmitter 1i13. Since this TWT requires a lot of power and generates heat during operation, it is necessary to keep it cool. For this reason, a large heat sink 14 is installed on the vertical surface of the device.
At- exposed and in contact with this internally to allow natural air cooling.

[Problem that the invention seeks to solve]

In the above-mentioned conventional wireless communication device, the receiving device, the transmitting device 11 and the high-frequency amplifying device are independent, and although they are integrated by a frame, the overall size is large and cannot be installed directly exposed outdoors. Furthermore, depending on the situation, if the plane of polarization of spatial propagation is changed by 90 degrees, it is necessary to rotate the polarization demultiplexer by 90 degrees on the axis. It is necessary to combine and connect a curved waveguide and a curved I-tube to the waveguide connected to the device, resulting in multiple and troublesome operations.

[Means for solving problems]

According to the wireless communication device of the present invention which is intended to solve the above conventional problems, the transmitting section and the receiving section are housed in the same housing,
The polarization planes of the transmitting radio wave and the receiving radio wave are different from each other by 90 degrees, and the transmitting 1tttJL and the receiving harmonic wave can be transmitted through a common waveguide, and the central extension axis of the waveguide passes through the housing. The Ii housing is supported and rotated around the axis so that mutual polarization directions can be changed. Also, a primary antenna is connected to the outside of the common waveguide. This is achieved because the surface of the housing on the axis corresponding to the common waveguide installed above is the introduction outlet for cables, etc. ◎ [Function] Inside the main body, the transmitting section is mainly located at the bottom, and the receiving section is divided into left and right sections. Since the body is neatly mounted and assembled, assembly and inspection are easy, and the heat generated is efficiently and naturally radiated into the space from the heat radiating section on the external surface of the body, which extends from the bottom to the side surface.

The high frequency amplification section is attached separately to the outer surface of the bottom.
Heat is naturally radiated directly into the space from the heat radiating part on the outside, and since it is extremely small and waterproof as a whole, it can also be installed on an outdoor antenna.

Equipped with an internal polarization splitter, transmitting and receiving radio waves can be propagated using the same antenna, and by supporting the entire housing rotatably around a common waveguide axis, mutual polarization can be achieved. The direction can be changed arbitrarily.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The wireless communication device of the present invention will be specifically described below with reference to embodiments and drawings.

1 to 7 show one embodiment of the present invention, in which FIG. 1 is a perspective view with the lid open, and FIG. 2 is a cross-section 1IOJJI section. In the figure, the receiving section 31 of the wireless communication circuit and the transmitting section '4! ! The main body part 33 of the box housing which accommodates the part 32
, a removable lid 35 that covers and seals the opening surface 34 of the main body 33 , and a high frequency amplification section 38 detachably attached in contact with the outer surface 37 of the bottom 36 of the main body 33 .

The casing 39 of the main body part 33 has a seven-lung shape around the top opening 34, and two grooves are formed on the surface, and an inner groove 40
An electromagnetic shielding member 41 is placed on the outer groove 42, and an airtight (water-tight)
) is surrounded by a protective ring 43 (Fig. 2a), and the flange surface of the same shape of the lid 35 is a flat surface, and holes 44 for tightening bolts are provided on the outside thereof. .

A large number of heat radiation fins 45 are formed on the outer side surface of the housing 39. Further, the outer surface 37 of the bottom portion 36 is a flat surface.

A recess 46 is formed on the inner surface of the housing of the high frequency amplification section 38 , and the high frequency amplification unit 48 is in close contact with the inner surface 47 of the recess.
is attached with screws 49.

This unit 48 is comprised of a solid-state amplifier device, the details of which are not shown, with one end having a high frequency input end and the other end having an amplification high output end.

Further, a large number of radiation fins 50 are formed in the horizontal direction on the bottom outer surface of the high frequency amplification section 38, and a surface 51 in contact with the bottom outer surface 37 of the main body section 33 has the same shape as the surface 37, but has two grooves around it. An electromagnetic shielding member 53 is fitted into the inner groove 52, an airtight member 155 is fitted into the outer groove 54, and a bolt hole 56 for fastening is inserted into the outer groove 54. is provided (Figure p42b).

The main body housing 39, lid 35, and amplifier housing 57 each have good thermal conductivity, high strength, and excellent corrosion resistance.
It is preferable to form it integrally with a high-quality, dense aluminum alloy casting, and perform precision processing, surface painting, etc.

Although the heat dissipation fins 45 of the main body housing 39 and the heat dissipation fins 50 of the high-frequency amplification unit body 57 are positioned vertically with the entire body horizontal in the first figure, cooling by natural convection of air flowing over the surfaces is in a convenient direction. It is.

In FIG. 1, side A is the antenna side, and BgAI is the cable introduction side (described later). On the A side, 58 has a circular cross section (
It is a waveguide (or square) and is connected to an antenna so that it can transmit both polarized waves. The position of this waveguide 58 is such that it penetrates the main body housing 39 at a position that coincides with the center of the circle indicated by the double-dot chain MAC in FIG. ing.

At the same position on the B side, install the circular cable introduction lower 0 (4th
(Fig. 6), the entire device is coaxially supported rotatably by these parts (Fig. 6). Alternatively, it can easily be set to either horizontal polarization.

Figure 3 shows the plane (a) of the polarization splitter 71 and the front view (b
), cc transmission output waveguide (cl, dd reception manual waveguide (d) is shown. The circular waveguide 58 section is shown in FIG. 3, and the circular 7 langes 72 of this section is fixed to the inner surface of the main body part 33 with screws.The transmitting output waveguide 73 is connected to the high output part of the high frequency amplification part, and the receiving human power guide pipe 74 is connected to the input end of the receiving part. Wave tube connection element force 16
9. O Seen in FIG. 1, the transmission section 32 receives a transmission signal from the B side, and outputs a low-power transmission high-frequency output to the A side. High frequency amplification section 38
In this case, the high frequency power is amplified to high output from the A side to the B side 1111, and is transmitted and emitted from the polarization splitter 71 to the antenna via the circular waveguide 58.

- 10,000, the weak received high frequency wave incident on the antenna reaches the polarization splitter 71 via the circular waveguide 58, and the receiving waveguide 7
The signals are separated into four parts, coaxially converted at the ends via the receiving side guide pipe 69, and coaxially coupled and inputted on the A side of the receiving section 31. The receiving section 31 processes the electrical signal and outputs the received signal to the B side.

As shown in the side view of the assembled appearance in FIG. 4, the primary antenna 75 connected to the circular waveguide (or square waveguide) 58 along the axis extending vertically through the center of the main body 33 transmits M waves. It has a circular (or square) reclining shape with an airtight window, and the outer diameter of the connecting flange 76 with the main body 33 is circular. The outer periphery 79 of the cable introduction/output lower 8 having the other polarization direction indicating plate 77 on the end face is also circular. FIG. 5 shows the appearance viewed from the direction of the display board 77.

The display on the display board 77, V and H at a rotational position of 90 degrees, is based on the polarization of the transmitted output, for example, and in this case,
■ indicates vertical polarization, I indicates water polarization, and the position is determined to match the inverted triangle mark 88 (this is attached to a stationary part).Therefore, the received radio waves are horizontal and vertical. stipulated by.

FIG. 6 shows a perspective view of the device mounted on the pedestal. The frame 80 has a frame shape, and two opposing sides are cut to form bearings 81 and 82 that receive the connection flange 76 and the lower semicircumference of the outer periphery 79 of the cable introduction/exit lower 8. The frame shape accommodates the entire transmitting/receiving eccentric part, and has sufficient space for rotation within the frame. The threaded pin 83 passes through the display panel 77 and is fixed to the housing 39 of the main body, but it is selectively passed through the holes 84 and 85 of the pedestal 80 at two locations with different angles of about 90 degrees. This allows the polarization direction to be set in any direction by rotating the entire housing.

Fine adjustment of the V-Hi wave (for example, ±45 degrees degree) can also be made possible.

The connecting flange 76 and the holding metal fittings 86 and 86 that press the upper half circumference of the other outer periphery 79 are connected to the mount 80 by screws 87.
It is possible to fix the entire sending/receiving eccentric part by tightening it.

Note that the cables are sealed and fixed by a known watertight (airtight) penetration means when passing through the cables at the cable introduction/output lower 8.

FIG. 7 is a side view of the wireless communication device of the present invention mounted on an antenna device. The antenna device has a support 90 standing upright in the center of a horizontal leg 89 and a horizontal rotation mechanism 91 above the support.
Further, the tilt angle adjustment mechanism 9 tilts the upper antenna support base 92 vertically up and down with the horizontal axis 93t as the center.
4, a fixing screw 95 for fixing at a predetermined angular position, and a support base 9
A primary reflecting mirror 96 is mounted facing the opening of the primary antenna 75 of the wireless communication device mounted on the bottom center of each frame 80, and a large-diameter secondary reflecting mirror 97 is mounted facing upward. Become.

In the above manner, the transmitted radio wave is emitted from the -order antenna 75, but the overall emission angle range is that it effectively irradiates the entire surface of the primary reflector 96, and as it further expands, the entire concave secondary reflection V197
The effective spatial beam width is defined by the beam width and propagated to a remote location (e.g., a communications satellite). A received radio wave, which is a radio wave radiated from a remote point (for example, a communication satellite), follows the reverse of the above system, that is, it is stopped by the secondary reflector 97, and is reflected and focused by a rotating object surface, an elliptical surface, etc. It is input to the primary air 1i 175 via the -order reflecting mirror 96.

The above-mentioned secondary antenna 75, secondary reflective mirror 96, secondary reflective mirror 97
The mutual positional relationship between the two is fixed on the support base 92 as an R-positioned box, and remains unchanged even when the horizontal rotation and the elevation angle are adjusted.

Of course, in this state, it is possible to change the polarization direction by rotating the wireless communication device on the pedestal 80 as described above.

Alternatively, it is also possible to pass through by eliminating the -order reflector 96 and arranging the entire wireless communication device so that the primary antenna 75 faces the secondary reflector 97.If the distance is relatively short, the primary antenna can be used. It can also be made larger and communicate directly. It can also be applied to various other applications and modifications. For example, the -order antenna is not limited to 9-shaped antennas, but can also be dipole-shaped, lens-shaped,
Folded reflection shadows, etc.

[Effects of the Invention] As described above, according to the present invention, by making a high-output wireless communication device compact, high-density, and rationally packaged, it can be used directly outdoors, and the transmitting section and receiving section can be separated. By connecting to a common antenna through a splitter, it is possible to eliminate the need for a waveguide, and the direction of polarization can be easily changed by rotating directly. 21 M Practical Effects is written by A.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention with the lid open, Fig. 2 is a cross section of Fig. 1, and Fig. 3 is an external view of the polarimeter t
-(d), FIG. 4 is a side view of the wireless communication device, FIG. 5 is a view taken along the line D-D in FIG.
Figure 7 is an antenna installation diagram, Figure 8 is a conventional wireless communication fJ
7t, 31 is a receiving section, 32 is a transmitting section, 33
35 is the main body, 35 is the lid, 38 is the high frequency amplification section, 71 is the partial temporary type, 75 is the primary antenna, 78 is the couple type conductor exit,
80 is a pedestal. 70 Introduction No. 4 Each of the four interpretation thresholds of the reading passage No. 6 Listening Df)

Claims (1)

[Claims] 1. The transmitting section (32) and the receiving section (31) are housed in the same housing (
39), the polarization planes of the transmitted radio wave and the received radio wave are different from each other by 90 degrees, and the transmitted radio wave and the received radio wave are transmitted through a common waveguide (58), and the waveguide (
The central extension axis of the device (58) passes through the housing (39), and the device housing (39) is supported and rotated about the axis so that mutual polarization directions can be changed. wireless communication equipment. 2. A primary antenna (75) is installed outside the common waveguide (58).
) is connected to the wireless communication device according to claim 1. 3. The wireless communication device according to claim 1, wherein a surface of the casing on the axis corresponding to the common waveguide (58) is an introduction outlet (78) for a cable or the like.