Terahertz frequency doubler using coplanar transmission line

Abstract

The invention discloses a terahertz frequency doubler using coplanar transmission line; the terahertz frequency doubler comprises a fundamental wave input waveguide and a main waveguide; the fundamental wave input waveguide is communicated with the main waveguide; a medium substrate is arranged on the bottom surface of an internal chamber of the main waveguide; the left end of the medium substrate stretches out from the main waveguide and then stretches into the fundamental wave input waveguide; the coplanar transmission lines, the lower surfaces of which are flush with the upper surface of the medium substrate, are arranged on the medium substrate; the coplanar transmission line comprises a short-circuit transmission line, a primary connection transmission line, a matching transmission line, an output waveguide matching transmission line and a DC bias low-pass filter connected to one another from left to right and further comprises an output waveguide; the output waveguide is in crossed connection with the main waveguide; the overlapped area of the output waveguide and the main waveguide is an area M; the output waveguide matching transmission line is arranged in the area M; two grounded transmission lines of the coplanar transmission line are arranged at the left side of the output waveguide; and the coplanar transmission line further comprises an upside-down four-core 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] THz waves refer to electromagnetic waves with a frequency in the range of 0.1~10THz. This band is between microwaves and infrared light waves. It is an electromagnetic spectrum area that has not been fully developed by humans. 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 in...

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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