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A Terahertz Antenna for Short Baseline Measurements

A short baseline and antenna technology, applied in the field of terahertz devices, can solve problems such as the inability to measure short baselines of terahertz mixers

Active Publication Date: 2019-07-09
NAT SPACE SCI CENT CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Current terahertz antennas cannot enable terahertz mixers to achieve short baseline measurements, and the realization of short baseline measurements significantly improves the indicators of multi-unit interferometric systems

Method used

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  • A Terahertz Antenna for Short Baseline Measurements
  • A Terahertz Antenna for Short Baseline Measurements
  • A Terahertz Antenna for Short Baseline Measurements

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, a terahertz antenna for realizing short baseline measurement, the antenna is a horn antenna 2, and the horn antenna 2 is composed of an upper half cavity 5, a lower half cavity 6 and a middle cavity 7, which jointly constitute A cuboid cavity; the channels of the upper half cavity 5 and the lower half cavity 6 are symmetrical, and the upper half cavity 5 includes the upper half of the bell mouth surface 8 and the upper half of the transverse bending waveguide 9 and the upper half of the output waveguide 10; the lower half cavity 6 includes the lower half of the bell mouth surface 8, the lower half of the transverse bending waveguide 9 and the lower half of the output waveguide 10; the middle cavity 7 includes Longitudinal bend waveguide 11, such as figure 2 shown.

[0023] Preferably, the horn antenna 2 is formed by inter...

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Abstract

The invention discloses a terahertz antenna for realizing short baseline measurement. The antenna is a horn antenna (2); the horn antenna (2) is a rectangular solid cavity composed of an upper half cavity (5), a lower half cavity (6) and a middle cavity (7); ditches of the upper half cavity (5) and the lower half cavity (6) are symmetric; the upper half cavity (5) comprises an upper half part of a horn mouth surface (8), an upper half part of a transverse turning waveguide (9) and an upper half part of an output waveguide (10); the lower half cavity (6) comprises the lower half part of the horn mouth surface (8), the lower half part of the transverse turning waveguide (9) and the lower half part of the output waveguide (10); and the middle cavity (7) comprises a lengthways turning waveguide (11). The terahertz antenna disclosed by the invention has the characteristics of a simple structure, reliable performances and a capability of realizing short baseline measurement.

Description

technical field [0001] The invention relates to the field of terahertz devices, in particular to a terahertz antenna for realizing short baseline measurement. Background technique [0002] The superheterodyne receiver has very high sensitivity and spectral accuracy, and can be used for terahertz detection from 0.1THz to 2.5THz. The mixer is located at the front end of the receiver. Driven by the local oscillator signal, the high-frequency signal is converted into an easy-to-handle intermediate frequency signal. The main forms are superconducting-insulating-superconducting mixer, thermal electron radiation mixer, Schottky Diode Mixer. Compared with the previous two mixers, the Schottky diode mixer can work at room temperature, has a more compact structure and more reliable performance, so it becomes the first choice for spaceborne millimeter-wave radiometers. [0003] The core problem of terahertz mixer design is how to realize the matching of radio frequency signal, local ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q13/02
CPCH01Q13/02
Inventor 赵鑫张德海蒋长宏孟进栗晓鹏
Owner NAT SPACE SCI CENT CAS
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