JPS63299502A - Rotary transmission equipment - Google Patents

Abstract

PURPOSE:To reduce the installing space of a rotary transmission equipment by connecting a radial waveguide power synthesizer and a coaxial waveguide converter via a rotary joint and at the same time setting a power amplifier and said power synthesizer on a turntable. CONSTITUTION:A radial waveguide power synthesizer 21 is connected to a coaxial waveguide converter 23 via a rotary joint 8. At the same time, a power amplifier 2 and the synthesizer 21 are set on a turntable 7. In other words, the synthesizer 21 is transformed into a structure of the joint 8 and the converter 23 is fixed to transmit the transmission signals to an antenna, a feeder waveguide which are fixed to the facilities. Furthermore the turntable 7 has a 360 deg. rotating function. As a result, a maintenance space can be reduced.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention involves connecting a plurality of power amplifiers in parallel and mounting them 360 degrees in the circumferential direction (so-called radial mounting), and converting the outputs of these power amplifiers into electric power. It relates to transmitted waves that are combined and output.

[Conventional technology] Conventionally, a transmitting device is installed inside a shelter.

A single-power transmission tube was operated, and its output signal was transmitted via a feeder waveguide to an antenna system on a tower several tens of meters high.

Currently, with the advancement of semiconductor technology, we are entering a period of transition from transmitting tubes to semiconductors. Radial waveguides are also used in power synthesis technology.
ide) using a power combiner (Power Comb
-iner) etc. are used to achieve low loss synthesis and miniaturization of the device. Moreover, in this way it is small! There is a desire to further reduce the size of the device by installing the device on the antenna tower and reducing the loss in the feeder waveguide system.

The radial waveguide power combiner (RadialWa) described above
veguide Power Coll1biner)
A transmitting device using this is shown in FIGS. 4 and 5.

FIG. 4 shows a cross-sectional view of the transmitted wave, and FIG. 5 shows a plan view.

In these drawings, 1 is a radial waveguide power combiner, which radially guides RF multiplied signals with amplitude and position balance from multiple power amplifiers 2 connected in parallel and mounted 360 degrees in the circumferential direction. By exciting the inside of the tube as a TEM wave and achieving desired impedance matching, it is possible to realize a large number of composites with high synthesis efficiency in a compact and lightweight device.

3 is a coaxial waveguide converter that converts the output coaxial line of the radial waveguide power combiner 1 into a rectangular waveguide, and sends a transmission signal to the antenna and feeder waveguide fixedly installed in the facility. It is supposed to be done.

9 is a mode converter from a coaxial waveguide to a rectangular waveguide, 10
is a mode converter from a radial waveguide to a coaxial waveguide.Normally, the CaDial mode converter exhibits high conversion efficiency and is a widely used method. It is designed to be approximately 1/4 wavelength.

[Problems to be solved] -1- The conventional transmitting device described above is a radial mounting device, which requires maintenance space all around 360 degrees, and the installation location is limited to the center of the room. There are drawbacks. 6 shows the 1m of the equipment in Figure 6, where 6 is the equipment room seen from above, and 4 is the transmitter.
The shaded area in 5 is the maintenance space for the equipment, and indicates the area where it is impossible to install other equipment.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a rotary transmitter that can reduce maintenance space.

Solution to Problem E] In order to achieve the above object, the present Ill combines multiple power amplifiers connected in parallel and mounted 360 degrees in the circumferential direction, and outputs the resultant power by combining the outputs from these power amplifiers. In a transmitter equipped with a radial waveguide power combiner and a coaxial wave tube converter, the radial waveguide power combiner and the coaxial wave tube converter are connected via a rotary joint, and The power amplifier and the radial waveguide power combiner are installed on a turntable.

[Example] Hereinafter, the present invention will be explained in detail based on FIGS. 1 to 3.

FIG. 1 is a cross-sectional view of the embodiment, FIG. 2 is a cross-sectional view of the rotary joint portion of the rectangular waveguide, and FIG. 3 is a plan view showing the installation space of the main neck mount. In these figures, the same parts as in the conventional equipment shown in Figs. 4 to 6 are given the same reference numerals, and some explanations thereof will be omitted.

This embodiment differs from the conventional device in that a radial waveguide power combiner 21 and a coaxial cowaveguide converter 23 are connected via a rotary joint 8, and a power amplifier 2 and a radial waveguide power combiner 21 are connected via a rotary joint 8. This is because the synthesizer 21 is placed on the turntable 7.

That is, this embodiment has a configuration in which the radial waveguide power combiner 21 is made into a rotary joint, and the coaxial waveguide converter 23 that sends the transmission signal to the antenna and feeder waveguide fixedly installed in the facility is fixed. This is the device that achieved the rotation function.

The turntable 7 has a 360 degree rotation function.

Note that the hatched portions in FIGS. 1 and 2 are rotating portions.

Figure 3 is a view from above of the room 6 in which this transmitter is installed. In Figure 0, 4a is the transmitter, and the diagonally shaded area 5a is the maintenance space where other equipment is installed. It can be seen how much this hatched area has been reduced compared to the conventional case shown in FIG. 6, which indicates a part where fl is not possible.

[Effects of the Invention] As explained below, the present invention connects a radial waveguide power combiner and a coaxial cowavetube converter via a rotary joint, and also connects a power amplifier and a radial waveguide power combiner. By adopting a rotating structure in which the device is installed on a turntable, the maintenance space for the radially mounted power amplifier can be significantly reduced, and the installation space can be reduced.

Furthermore, with the miniaturization of radial mounting equipment, the installation in the narrow antenna tower 1 becomes obsolete, and the power loss in the feeder waveguide is further reduced, resulting in further miniaturization and an increase in the number of vA units used. Reliability can also be improved by reducing the number of semiconductors.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the embodiment, Figure 2 is a sectional view of the rotary joint part of the rectangular waveguide, Figure 3 is a plan view showing the installation space made of wood, and Figure 4 is a diagram of the conventional transmitter. FIG. 5 is a sectional view, FIG. 5 is a plan view, and FIG. 6 is a plan view showing the installation space of the conventional device. '1.21 Nirasial waveguide power combiner 2: Power amplifier 3.23: Coaxial waveguide converter 4.4a: Transmission equipment installation space 5.5a: Transmission 1δ maintenance space 6: Equipment installation room 7: Turntable 8: Rotary joint 9.10: Waveguide/coaxial transmission line mode converter Agent Patent attorney Watanabe Teihei Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] A transmission comprising a plurality of power amplifiers connected in parallel and mounted 360 degrees in the circumferential direction, a radial waveguide power combiner and a coaxial cowave tube converter that combine the outputs from these power amplifiers and output the combined power. In the apparatus, the radial waveguide power combiner and the coaxial cowaveguide converter are connected via a rotary joint, and the power amplifier and the radial waveguide power combiner are installed on a turntable. Features a rotating transmitter.