JPS589396Y2 - multiple microwave radio equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multiple microwave radio device having a mounting structure that achieves high density and high efficiency.

Conventional implementation of a repeater in a wireless relay station, for example, generally involves a structure in which a duplexer is placed horizontally on the ceiling, and a duplex filter is suspended from the duplexer and connected to a transmitter/receiver housed in a rack.

However, microwave transmission circuits can be significantly miniaturized through the development of various devices and the adoption of dielectric filters, etc., and it is expected that transmitters and receivers in wireless equipment will be significantly miniaturized. It is difficult to miniaturize filters, circulators, antenna duplexers, etc. due to their electrical components or cost advantages.

Under such current circumstances, although it is possible to miniaturize the equipment in the height direction with the conventional general station mounting structure 11 mentioned above, there is a limit to miniaturization in the width direction. The advantage of miniaturization of the transmitter/receiver does not contribute to the improvement of the radio equipment or station structure at all, since only a get space is generated in the direction.

Further, in the conventional mounting structure, there is a problem that the connection transmission path becomes unnecessarily long and the path loss becomes large.

The present invention has been devised to improve these drawbacks.

Therefore, in the multiplex microwave radio device of the present invention,
A first group of demultiplexing filters connected to the first microwave transmission line input/output section branched from the antenna duplexer is arranged in a horizontal multi-stage form from near the center in the height direction of the rack toward the top, A second group of demultiplexing filters connected to a second microwave transmission line input/output section branched from the antenna duplexer are overlapped with the first group of demultiplexing filters back and forth, and alternately in the height direction. In addition, multiple sets of transmitters and receivers are arranged horizontally in multiple stages from the top to the center of the rack so that The transmitter/receiver is arranged in multiple stages, and the transmitter/receiver and each corresponding demultiplexing filter are connected by a microwave transmission path, and each transmitter/receiver is connected to each baseband circuit.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a front view of the first embodiment.

This wireless device has a plurality of sets of receivers 2 and transmitters 3 mounted in horizontal multi-stage form above the central part of the rack 1 in the height direction together with a circulator 4 and a demultiplexing filter 5 of a demultiplexer system. It has a structure in which a monitoring/control unit 6 is arranged in the center, and a plurality of baseband units 7 are further arranged below it.

The mounting structure of the transmitter/receiver and the duplexer is shown in detail in three views in FIGS. 2 to 4, and will be described below.

In the figure, reference numeral 8 denotes an antenna input/output port, and 9 denotes an antenna duplexer, which are disposed protruding from the upper left side of the rack.

A first microwave transmission line input/output section 10 branched from this antenna duplexer 9 is connected to a first group of multiple demultiplexer circulators 12 sequentially from above via a low-pass filter 11 via a waveguide 13. A branching filter 14 is connected horizontally to the side input/output portion of each circulator 12.

Therefore, the branching filters 14 are arranged in multiple stages in the height direction of the frame.

In addition, a waveguide 16 extending downward from the second microwave transmission line input/output section 15 branched from the antenna duplexer 9 is connected to the waveguide 16 to which the second group of multiple or several portions is connected. The wave system circulator 17 sequentially moves from the bottom to the top of the waveguide 1.
8, and a branching filter 19 is horizontally connected to the side input/output portion of each circulator 17.

The second group of demultiplexing filters 19 are arranged so as to overlap the first group of demultiplexing filters 14 one behind the other, as shown in FIG. 2, and alternately in the vertical direction as shown in FIG. .

That is, the duplexer system (circulator 12, waveguide 132, demultiplexing filter) leading to the first microwave transmission line input/output section 10 of the antenna duplexer 9 is located on the rear side of the rack, whereas the A branching system (circulator 17, waveguide 182, branching filter) leading to the microwave transmission line input/output unit 15 of No. 2 is located on the front side of the rack and overlaps in front and behind.

Further, since the circulators 12 and the branching filters 14 and the circulators 17 and the branching filters 19 are arranged alternately in the vertical direction, they are arranged in a staggered manner as shown in FIG. 4 when viewed from the side of the rack.

The receivers 2 and transmitters 3 are arranged vertically alternately and horizontally in multiple stages on the front side of the rack, and each has a demultiplexing filter 1.
It overlaps with 4 or 19 one after the other.

In the figure, the receiver 2 corresponds to the branching filter 19, and the transmitter 3 corresponds to the branching filter 14.

The receiver 2 and the transmitter 3 are connected to the corresponding demultiplexing filters 14-1 and 19 via curved waveguides 20 and 21, respectively, on the right side in the width direction of the frame.

Further, each receiver 2 and transmitter 3 is connected to a baseband circuit 7 by a coaxial cable.

This embodiment configured as described above has the following advantages.

First, by arranging the transmitter/receiver and the demultiplexing filter in horizontal multi-tiered fashion in the vertical direction of the rack and stacked one on top of the other as described above, high-density mounting with little dead space is possible, and the transmitter/receiver In addition, since all the duplexers are housed within the frame, it is possible to simplify and downsize the structure of the relay station or terminal station.

Second, the length of the connection path between the transmitter/receiver and the duplexer is very short, resulting in low path loss and high efficiency.

The third advantage is that when adjacent transmitters and receivers are combined into one system, the transmission path length is approximately the same in all systems, and the efficiency is uniform.

For example, the first system 2-1.3-1, the second system 2
-2゜3-2, 3rd system 2-3. 3=3 as the 4th
The number of circulators 12 and 17 through which each system 2-4>3-4t passes is the same.

The fourth advantage is that although the duplexer and transmitter/receiver are arranged and connected in a three-dimensional three-dimensional circuit, strict precision is not required during assembly, making assembly work at the installation site very easy. .

Next, a second embodiment is shown in FIGS. 5 to 8.

While the first embodiment used a waveguide as the microwave transmission path, this embodiment uses a coaxial cable 22, and other antenna duplexers 9, circulators 1
The arrangement of the branching filters 2 and 17, the branching filters 14 and 19, etc. is completely the same as in the first embodiment.

Therefore, the advantages are also the same.

As explained above, the multiplex microwave radio device of the present invention is
The duplexer and transceiver are mounted very densely, with low path loss and high efficiency, which greatly contributes to the improvement of the station mounting structure.

[Brief explanation of drawings]

FIG. 1 is a front view of a multiplex microwave radio device according to the first embodiment of the present invention, and FIGS. 2, 3, and 4 show the mounting structure of the duplexer and transceiver excluding the rack. Fig. 5 is a front view of the second embodiment, and Fig. 6, Fig. 7, and Fig. 8 show the mounting structure of the duplexer and transceiver excluding the rack. They are a top view, a front view, and a right side view, respectively. 1... Frame, 2,2-1 to 2-4... Receiver, 3.3-0 to 3-4... Transmitter, 4,1
2, 17... Circulator, 5, 14, 19
・・・・・・Division filter, 6・・・Monitoring/control unit, 7・・・Baseband unit, 8...
...Antenna input/output port, 9...Antenna duplexer, 10...First microwave transmission line input/output section,
13, 16, 1B... Waveguide, 15...
・Second microwave transmission line input/output section, 22...
coaxial cable.

Claims (1)

[Scope of utility model registration request] A first group of demultiplexing filters connected to the first microwave transmission line input/output section branched from the antenna duplexer is arranged in a horizontal multi-stage form from near the center in the height direction of the rack toward the top, A second group of demultiplexing filters connected to a second microwave transmission line input/output section branched from the antenna duplexer are overlapped with the first group of demultiplexing filters back and forth, and alternately in the height direction. In addition, multiple sets of transmitters and receivers are arranged horizontally in multiple stages from the top to the center of the rack so that A multiplex microwave radio device characterized in that the transmitter/receiver is arranged in multiple stages, the transmitter/receiver and each corresponding demultiplexing filter are connected via a microwave transmission path, and each transmitter/receiver is connected to each baseband circuit.