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Transmission Mode Converter

A transmission mode and converter technology, which is applied in the direction of instruments, scientific instruments, waveguide devices, etc., can solve the problems of difficult transfer, complex center conductor structure, and increased product cost, so as to reduce product cost, increase relative bandwidth, and reduce cost effect

Active Publication Date: 2020-04-28
MUSASINO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the technology of the above-mentioned Patent Document 1, it is necessary for the central conductor to have several short pins.
Therefore, as document 1 image 3 As shown, the structure of the center conductor becomes complicated, which may lead to an increase in product cost
Also, although a part of the load applied to the wire bonding portion of the central conductor due to shaking of the wire, etc., can be transferred to the case by the short pin, it is difficult to transfer all the sloshing load applied to the wire bonding portion. are transferred to the shell
Therefore, it is necessary to increase the mechanical strength of the wire bonding portion to a considerable degree, and this may also become a factor of an increase in product cost

Method used

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Examples

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Embodiment Construction

[0019] Hereinafter, an embodiment in which the transmission mode converter of the present invention is applied to a liquid level measuring device will be described with reference to the drawings. First, based on figure 1 , the main configuration of the liquid level measuring device 10 of this embodiment will be described. figure 1 It is an explanatory diagram of a configuration example of the liquid level measuring device 10 .

[0020] The liquid level measuring device 10 is arranged in an oil tank 91 of a ship transporting liquid 100 such as an oil tanker, such as figure 1 As shown, it is mainly composed of a converter 20, a delivery pipe 13, a radar transceiver, a controller, and the like. For example, the liquid 100 is water, petroleum, liquefied natural gas, and the like. in addition, figure 1 In , the illustration of the radar transceiver and controller is omitted.

[0021] The converter 20 is an antenna device capable of transmitting and receiving micron waves o...

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Abstract

The invention provides a transmission mode converter whose product cost can be reduced. In the converter (20), a patch antenna (30) emits microwaves supplied from a connector (26) to a circular waveguide (40) in a TM01 mode. Blocking frequency of the circular waveguide (40) in the condition of transmitting the microwaves in the TM01 mode is lower than the blocking frequency in the condition of transmitting the microwaves in a TE01 mode. As a result, a waveguide used in the TM01 mode can be thinner than a waveguide used in the TE01 mode. Therefore, the product cost can be reduced.

Description

technical field [0001] The present invention relates to a transmission mode converter which is connected to a waveguide and used. Background technique [0002] The technique disclosed in Patent Document 1 is an example of a transmission mode converter used not connected to a waveguide, but a transmission mode converter used connected to a wire, and measures the distance from the measured object (liquid surface) by pulse radar. distance. In the technology of Patent Document 1, a patch antenna as a transducer is mounted on a central conductor. Also, the center conductor has short pins integrated with the housing so that the load applied to the center conductor by the wire is applied to the housing through the short pins. As a result, the load is not applied to the dielectric or the like provided around the central conductor. Therefore, even if the load applied to the lead wire bonding portion of the central conductor changes due to vibration of the lead wire, etc., it is pos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/10H01Q1/22
CPCH01P5/10H01Q1/22G01F23/284G01N22/00
Inventor 后藤尚久杉山直树
Owner MUSASINO