Terahertz Frequency Doubler Using Coplanar Transmission Lines

Abstract

The invention discloses a terahertz frequency doubler using a coplanar transmission line, comprising a fundamental wave input waveguide and a main body waveguide, the fundamental wave input waveguide is connected to the main body waveguide; the inner cavity bottom of the main body waveguide is provided with a dielectric substrate, and the left end of the dielectric substrate extends After exiting the main waveguide, it extends into the fundamental wave input waveguide. The dielectric substrate is provided with a coplanar waveguide transmission line whose lower surface is flush with the upper surface of the dielectric substrate. Transmission line, matching transmission line, output waveguide matching transmission line, DC bias low-pass filter, also includes output waveguide, output waveguide and main body waveguide are cross-connected, the overlapping area of ​​output waveguide and main body waveguide is area M, output waveguide matching transmission line is set in area In M; the left side of the output waveguide is provided with 2 coplanar transmission lines and ground transmission lines, and also includes an upside-down four-tube frequency-doubling diode.

Description

technical field [0001] The invention relates to the technical field of terahertz, in particular to a terahertz frequency doubler using coplanar transmission lines. Background technique [0002] Wave refers to electromagnetic waves with a frequency in the range of 0.1~10THz. This band is between microwave and infrared light waves. It is an electromagnetic spectrum area that has not been fully developed by human beings. Terahertz technology has developed at an extremely fast speed since it was proposed. The terahertz frequency multiplier, as the local oscillator source of the terahertz receiver mixer or the radiation source of the transmitter, has become a key component of the terahertz front-end system. With the wide application of terahertz technology, the performance requirements of terahertz frequency multipliers are getting higher and higher. In the existing technology, the production and performance of the W-band frequency source are relatively stable, but with the incr...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the prior art is: in the prior art, the passive circuit in the frequency doubler adopts two sections of symmetrical metal sheets protruding outward from the edge of the dielectric substrate to realize the radio frequency ground and the DC circuit

This increases the difficulty of processing, and at the same time makes the assembly accuracy have a greater impact on the results, which is extremely important in terahertz design

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