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Frequency-adjustable and power-tunable terahertz avalanche oscillator

An adjustable, terahertz technology, applied in the field of terahertz circuits, can solve problems affecting circuit performance and achieve the effects of increasing flexibility, increasing tuning range, and strong tunability

Active Publication Date: 2014-01-08
XIAN INSTITUE OF SPACE RADIO TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there must be a certain deviation between the structural size of the cavity circuit design and the actual processed structure size, which will affect the performance of the entire circuit

Method used

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  • Frequency-adjustable and power-tunable terahertz avalanche oscillator

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing, the present invention is described in detail, specifically as follows:

[0036] The present invention proposes a frequency- and power-tunable broadband terahertz avalanche oscillator based on an elliptical cap-disc structure. The elliptical cap-disc structure is used to realize the circuit matching between the avalanche diode and the waveguide cavity, and to ensure the signal generated by the avalanche diode oscillation. Can effectively output from the output waveguide. At the same time, through the ingenious design of the mounting structure of the avalanche diode tube base and the tuning structure of the cap plate, the height position of the avalanche diode inside the oscillation cavity can be adjusted to maximize the output power of the avalanche diode along the direction of the waveguide output port.

[0037] The resonator circuit of the present invention includes: tuning piston 1, piston lock nut 2, upper cavity pressi...

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Abstract

The invention discloses a frequency-adjustable and power-tunable terahertz avalanche oscillator. An oscillation cavity of the terahertz avalanche oscillator is formed by combining an upper cavity body and a lower cavity body, wherein a waveguide slot is formed in the top surface of the cavity body of the lower cavity body, and the waveguide slot is combined with the upper cavity body to form a standard waveguide cavity; an avalanche diode is assembled in a waveguide cavity in the center of the top surface of the lower cavity body through a tube base assembly thimble, the high and low positions of the avalanche diode in the waveguide cavity can be adjusted through rotating the tube base assembly thimble, and the avalanche diode is fixed through a locking nut after being adjusted in position; a spring thimble, a spring and a tunable cap disc are sequentially mounted in a tuning plunger from top to bottom, the tuning plunger assembled with the tunable cap disc, the spring and the spring thimble is screwed from an upper cavity pressure block to directly reach the waveguide cavity, and the spring enables the tunable cap disc to constantly keep physical contact with the avalanche diode in different high and low positions; the position of the tuning plunger is fixed through a piston locking nut.

Description

technical field [0001] The invention belongs to the technical field of terahertz circuits, in particular to a tunable avalanche oscillator cavity circuit working in the terahertz frequency band. Background technique [0002] Terahertz technology is a hotspot in current academic research and can be applied to fields closely related to national economic and social development, such as object imaging, environmental monitoring, medical diagnosis, radio astronomy, security inspection, anti-terrorism detection, satellite communication and radar detection. [0003] In the above applications of terahertz, the realization of terahertz frequency source is the premise and key to the application of terahertz system. As a traditional solid-state power device, avalanche diode can work stably at the low end of terahertz frequency band and has good power and frequency characteristics. Therefore, using avalanche diodes to realize solid-state oscillators in the terahertz frequency band is an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20H01P7/00
Inventor 朱忠博崔万兆刘丰胡天存
Owner XIAN INSTITUE OF SPACE RADIO TECH
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