Passive forwarding system suitable for closed space
A passive forwarding, confined space technology, applied in the microwave field, can solve the problems of high sealing requirements, inapplicability, and difficult realization of the transport box, and achieve the effect of simple structure, easy processing, and maintaining sealing.
Active Publication Date: 2020-02-28
CHINA AIR TO AIR MISSILE INST
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Problems solved by technology
If the aircraft is not in the transport box or the launch tube, it can be directly powered on to obtain the telemetry signal, but for the aircraft in the launch tube or the transport box, its outer wall has a shielding effect on the microwave signal emitted by the wireless transmission system, so it cannot be obtained directly from the outside world. Microwave signal sent by wireless transmission system
[0003] At present, there are two main methods for the signal radiation of the wireless transmission system in the launch tube or the transport box at home and abroad: one is to open a window on the box wall, and the microwave signal is coupled out through the window, but this method requires higher sealing in the transport box It is difficult to realize when the top cover is opened; another is to radiate the wireless signal through the opening of the top cover when the top cover is opened. This method is generally used in the stability test of the wireless transmission system. When the test is more frequent, this method is obviously not suitable. Applicable
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[0021] Preferred embodiments of the invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the invention, and are not intended to limit the protection scope of the invention.
[0022] A passive repeater system suitable for use in confined spaces such as figure 1 , 2 As shown, in this embodiment, the aircraft 1.1 is a missile, the airtight box 1 is an aircraft launching tube, and the missile is located in the hollow cavity 1.2 of the airtight box 1 . The launch tube of the aircraft is cylindrical, and the partition wall of the cylindrical shape is a box wall.
[0023] The aircraft 1.1 is provided with a transmitting antenna 2. In this embodiment, there are two transmitting antennas 2, which are relatively arranged on the aircraft 1.1. The transmitting antennas 2 transmit microwave signals into the hollow cavity 1.2.
[0024] Such as imag...
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A passive forwarding system suitable for a closed space comprises a closed box body, an aircraft is located in a hollow cavity of the closed box body, a transmitting antenna for transmitting microwavesignals into the hollow cavity is arranged on the aircraft, and a forwarding device corresponding to the transmitting antenna is arranged on the box wall of the closed box body. The forwarding devicecomprises a coupling antenna arranged in the hollow cavity and coupled with the transmitting antenna, and further comprises a forwarding antenna arranged outside the box wall and used for forwardingmicrowave signals to the outside, and the coupling antenna is connected with the forwarding antenna through an SMA connector embedded in the box wall. Microwave signals in a closed space are transmitted to an external space in a coupling mode, and coupling, forwarding and transmitting of the signals in the closed space are achieved. The device does not interfere with a wireless transmitting system, does not influence the sealing performance of a closed space, and has the characteristics of simple structure, easiness in processing and low cost.
Description
technical field [0001] The invention relates to the field of microwave technology, and relates to the passive forwarding and radiation of signals that are not suitable for wired transmission, so as to realize the coupling, transmission and emission of signals in confined spaces. Background technique [0002] In various aircraft tests, the telemetry system is an important means to evaluate the performance of the aircraft. Usually before the launch of the aircraft and after long-distance transportation, it is necessary to test and evaluate its performance. If the aircraft is not in the transport box or the launch tube, it can be directly powered on to obtain the telemetry signal. However, for the aircraft in the launch tube or the transport box, its outer wall has a shielding effect on the microwave signal emitted by the wireless transmission system, so it cannot be obtained directly from the outside world. Microwave signals emitted by wireless transmission systems. [0003]...
Claims
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IPC IPC(8): H04B17/10
CPCH04B17/10
Inventor 方治森刘钦凯齐健王铮张伟姚长虹
Owner CHINA AIR TO AIR MISSILE INST