CN-122017421-A - Terahertz waveguide module high-temperature aging monitoring system and monitoring method

CN122017421ACN 122017421 ACN122017421 ACN 122017421ACN-122017421-A

Abstract

The application provides a terahertz waveguide module high-temperature aging monitoring system and a monitoring method, which belong to the technical field of terahertz waveguide module detection and comprise a heating test cabin, an inner transmission waveguide, an outer transmission waveguide and a heat insulation module; the terahertz waveguide module is arranged in the heating test cabin, the bulkhead of the heating test cabin is provided with the switching module, the inner transmission waveguide is arranged in the heating test cabin, the input end of the inner transmission waveguide is connected with the terahertz waveguide module, the output end of the inner transmission waveguide extends to be connected with the switching module, the input end of the outer transmission waveguide is connected with the switching module, the output end of the outer transmission waveguide is connected with the power monitoring module, the heat insulation module is sleeved at the input end of the outer transmission waveguide and is fixed on the outer wall of the heating test cabin, and the heat insulation module is covered on the outer side of the switching module.

Inventors

FENG ZHIHONG
SONG XUBO
ZHAO XIANGYANG
ZHANG LISEN
GU GUODONG
HAO XIAOLIN

Assignees

中国电子科技集团公司第十三研究所

Dates

Publication Date: 20260512
Application Date: 20260228

Claims (10)

1. Terahertz waveguide module high temperature ageing monitoring system, its characterized in that includes: The device comprises a heating test cabin (1), wherein a terahertz waveguide module (2) is arranged in the heating test cabin, the terahertz waveguide module (2) is used for being connected with a radio frequency power source (3), and an adapter module (4) is arranged on a bulkhead of the heating test cabin (1); The waveguide assembly comprises an inner transmission waveguide (5) and an outer transmission waveguide (6) which are respectively arranged at the inner side and the outer side of the heating test cabin (1), wherein the input end of the inner transmission waveguide (5) is connected with the terahertz waveguide module (2), the output end of the inner transmission waveguide extends to be connected with the switching module (4), the input end of the outer transmission waveguide (6) is connected with the switching module (4), the output end of the outer transmission waveguide is connected with the power monitoring module (9), and The heat insulation module (7) is sleeved at the input end of the outer transmission waveguide (6) and is fixed on the outer wall of the heating test cabin (1), and the heat insulation module (7) is covered at the outer side of the switching module (4); after the radio frequency power source (3) is turned on, the terahertz waveguide module (2) is used for outputting signals through the inner transmission waveguide (5), the switching module (4) and the outer transmission waveguide (6), and the power monitoring module (9) is used for acquiring output power of the output signals.
2. The terahertz waveguide module high-temperature aging monitoring system of claim 1, characterized in that the outer transmission waveguide (6) is a waveguide horn antenna (8), and an output end of the waveguide horn antenna (8) is connected with the power monitoring module (9).
3. The terahertz waveguide module high-temperature aging monitoring system according to claim 2, characterized in that the power monitoring module (9) comprises a first power meter (91) and a monitoring assembly (92) in signal connection with the first power meter (91), wherein an input end of the first power meter (91) is connected with an output end of the waveguide horn antenna (8).
4. A terahertz waveguide module high temperature aging monitoring system as claimed in claim 3, characterized in that the thermal insulation module (7) comprises two heat preservation clamps which are symmetrical up and down, the two heat preservation clamps being clamped up and down on the peripheral wall of the outer transmission waveguide (6).
5. The terahertz waveguide module high temperature aging monitoring system as set forth in claim 4, wherein a plurality of groups of first connecting plates (71) are arranged at the upper and lower butt joint positions of the two heat preservation clamps at intervals, and the upper and lower ends of the first connecting plates (71) are correspondingly connected with the two heat preservation clamps; The outer edges of the two heat preservation clamps are provided with a plurality of groups of second connecting plates (72) at intervals, one end of each second connecting plate (72) is connected with the adjacent heat preservation clamp, and the other end of each second connecting plate is detachably connected to the outer bulkhead of the heating test cabin (1).
6. The terahertz waveguide module high temperature aging monitoring system as claimed in claim 1, wherein the switching module (4) is a switching waveguide, a first flange (51) is arranged at the output end of the inner transmission waveguide (5), the first flange (51) is fixed on the inner side of the switching waveguide, a second flange (61) is arranged on the outer transmission waveguide (6), the second flange (61) is fixed on the outer side of the switching waveguide, and the heat insulation module (7) is arranged on the outer peripheral wall of the second flange (61) in a surrounding mode.
7. The terahertz waveguide module high temperature aging monitoring system as claimed in claim 6, wherein the radial dimension of the switching module (4) is larger than that of the second flange (61), a clamping hole (73) penetrating front and back is arranged in the heat insulation module (7), and the hole wall of the clamping hole (73) is abutted against the peripheral wall of the second flange (61).
8. The terahertz waveguide module high temperature aging monitoring system according to claim 1, wherein a waveguide passage (41) with two ends penetrating is arranged in the switching module (4), in the terahertz waveguide transmission direction, the output end hole diameter of the waveguide passage (41) is equal to the input end hole diameter of the outer transmission waveguide (6), the output end hole diameter of the waveguide passage (41) is coaxial with the input end hole diameter of the outer transmission waveguide (6), the input end hole diameter of the waveguide passage (41) is larger than the output end hole diameter of the inner transmission waveguide (5), and the input end hole diameter of the waveguide passage (41) is covered on the output end hole diameter of the inner transmission waveguide (5).
9. Monitoring method, characterized in that a terahertz waveguide module high-temperature aging monitoring system according to any one of claims 1-8 is used for monitoring, the monitoring method comprising the following steps: obtaining standard transmission losses of the inner transmission waveguide (5) and the outer transmission waveguide (6) and introducing the standard transmission losses into the power monitoring module (9); The heating test cabin (1) is heated to a preset temperature and kept, the radio frequency power source (3) is turned on to enable the terahertz waveguide module (2) to be in a working state, and the terahertz waveguide module (2) outputs signals to the power monitoring module (9) through the inner transmission waveguide (5), the switching module (4) and the outer transmission waveguide (6); According to the standard transmission loss, the power monitoring module (9) is led out of initial output power P 0 , and the power monitoring module (9) is led out of real-time output power P 1 of the terahertz waveguide module (2); when the real-time output power P 1 is lower than 50% of the initial output power P 0 , the heating test chamber (1) fails, and the radio frequency power source (3) and a heating device of the heating test chamber (1) are closed.
10. The monitoring method according to claim 9, wherein said obtaining standard transmission losses of said inner transmission waveguide (5) and said outer transmission waveguide (6) comprises: The output end of the inner transmission waveguide (5) is connected with a calibration power meter (93), and when the terahertz waveguide module (2) is in a working state, the calibration power meter (93) collects first output power P in of the terahertz waveguide module (2); Assembling the terahertz waveguide module high-temperature aging monitoring system, opening the radio frequency power source (3), and when the terahertz waveguide module (2) is in a working state, collecting second output power P out of the terahertz waveguide module (2) by the power monitoring module (9), and closing the radio frequency power source (3); According to the formula And calculating standard transmission Loss, wherein Loss is the standard transmission Loss, and the unit is dB.

Description

Terahertz waveguide module high-temperature aging monitoring system and monitoring method Technical Field The application belongs to the technical field of terahertz waveguide module detection, and particularly relates to a terahertz waveguide module high-temperature aging monitoring system and a terahertz waveguide module high-temperature aging monitoring method. Background Terahertz waves (terahertz wave, THz) are electromagnetic waves between sub-millimeter waves and infrared rays, and the generation and emission of terahertz waves require a terahertz waveguide module to be realized. In order to ensure reliable operation of the terahertz waveguide module, a high-temperature aging experiment needs to be performed on the terahertz waveguide module. When the terahertz waveguide module in the heating test cabin is subjected to high-temperature aging test, signals in the heating test cabin need to be led out of the cabin, and because the transmission waveguide of terahertz waves is usually of a rigid metal structure, the signals cannot be led out through a cabin door gap of the heating test cabin, the output signals of the terahertz waveguide module cannot be monitored in real time, and the development of the high-temperature aging test of the terahertz waveguide module is restricted. Disclosure of Invention The application aims to provide a terahertz waveguide module high-temperature aging monitoring system and a terahertz waveguide module high-temperature aging monitoring method, and aims to solve the technical problem that signal derivation cannot be achieved when a terahertz waveguide module performs a high-temperature aging test. In order to achieve the above purpose, the application adopts the following technical scheme: in a first aspect, a terahertz waveguide module high-temperature aging monitoring system is provided, including: the device comprises a heating test cabin, a terahertz waveguide module, a radio frequency power source, a switching module and a power supply, wherein the terahertz waveguide module is arranged in the heating test cabin and is used for being connected with the radio frequency power source; The waveguide assembly comprises an inner transmission waveguide and an outer transmission waveguide which are respectively arranged at the inner side and the outer side of the heating test cabin, wherein the input end of the inner transmission waveguide is connected with the terahertz waveguide module, the output end of the inner transmission waveguide extends to be connected with the switching module, the input end of the outer transmission waveguide is connected with the switching module, the output end of the outer transmission waveguide is connected with the power monitoring module, and The heat insulation module is sleeved at the input end of the outer transmission waveguide and fixed on the outer wall of the heating test cabin, and the heat insulation module is covered at the outer side of the switching module; After the radio frequency power source is turned on, the terahertz waveguide module is used for outputting signals through the inner transmission waveguide, the switching module and the outer transmission waveguide, and the power monitoring module is used for obtaining output power of the output signals. Compared with the prior art, the scheme provided by the embodiment of the application has the advantages that the output signals of the terahertz waveguide module can be led out of the heating test cabin through the rigid inner transmission waveguide and the rigid outer transmission waveguide, both the inner transmission waveguide and the outer transmission waveguide are of rigid waveguide structures, and the rigid metal waveguide has excellent amplitude-phase stability, low loss and low signal distortion characteristics and can reduce errors on a transmission link; Furthermore, if the inner transmission waveguide and the outer transmission waveguide are directly connected at the bulkhead of the heating test cabin, the connection tightness between the inner transmission waveguide and the outer transmission waveguide is considered, the connection tightness between the inner transmission waveguide, the outer transmission waveguide and the bulkhead of the heating test cabin is considered, the operation is complex, and when the tightness is insufficient, the temperature in the heating test cabin is influenced, so that the accuracy of a high-temperature aging test is not facilitated; according to the application, the adapter module is arranged on the bulkhead of the heating test cabin and is fixed on the bulkhead, so that the sealing connection and signal transition of the inner transmission waveguide and the outer transmission waveguide are realized, the reliable sealing between the adapter module and the bulkhead is realized while the waveguides are in butt joint, no additional and invalid gap sealing treatment is needed between the waveguide body and the bulkhead, the stability