Terahertz substrate integrated waveguide multi-channel power divider

Abstract

The invention relates to a terahertz substrate integrated waveguide multi-channel power divider adopting an air lens, suitable for terahertz (THz) frequency band. Input and output adopt substrate integrated waveguide H-surface horn antennas for feeding and receiving energy; a medium substrate layer is slotted to form the air lens and finite periodic air phase gratings, which can be effectively used for conversion and distribution of wave beam; by reasonably designing the air lens and the finite periodic air phase gratings, the single-layer double-channel power division output can be performed, and by using N (N is a natural number) layers of medium substrates, the 2*N-channel array power division / synthesis can be performed; the signal transmission loss is reduced to the maximum extent. The multi-channel power divider has excellent characteristics of high efficiency, miniaturization, stable performance, good input standing-wave ratio and the like, has the advantages of good consistency of signal amplitudes / phases of power division output ports and the like, is mainly used for THz power synthesis amplification systems, phased-array antenna feed networks and the like, and has a wide application prospect in THz systems of communication, radar, measurement and control and the like.

Description

technical field [0001] The invention relates to a substrate-integrated waveguide multiplex power divider using an air lens suitable for the terahertz frequency band. Background technique [0002] Terahertz (THz) wave is an electromagnetic wave between microwave and infrared (frequency 0.1THz-10THz), which is the "gap area" of the electromagnetic spectrum that has not been fully developed by humans. As a new and rapidly developing technology, terahertz technology is widely used in security inspection and anti-terrorism, object imaging, non-destructive testing, radio astronomy, electronic countermeasures, broadband mobile communication, THz radar and satellite space communication. The THz solid-state frequency source with high efficiency, small size, high power and stable performance is the core component of the miniaturized THz system. Therefore, the research on the miniaturized high-power THz solid-state frequency source has become an important link in the development and a...

AI Technical Summary

Problems solved by technology

The traditional waveguide space power combining technology is limited due to the waveguide size and processing technology in the THz frequency band; the free space array power combining technology limits its application in the THz frequency band due to the radiation loss of the structure itself; the traditional quasi-optical power combining technology In the THz frequency band, there will be a contradiction between circuit miniaturization and effective heat dissipation, which limits its application in the THz frequency band

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