Millimeter wave ultra-wideband spatial power combining network

Abstract

The invention provides a millimeter wave ultra-wideband spatial power combining network. Radio-frequency signals are combined to a standard double-ridge-waveguide output port (1) from four micro-strip transmission line input ports (2). Micro-strip double probes (12) are vertically inserted in from a single-ridge-waveguide broadside (16) and are distributed on two sides of waveguide single ridges (19) in a face-to-face mode. Radio-frequency signals on micro-strip transmission lines (14) are transferred into non-standard single ridge waveguides (21), and the radio-frequency signals which are transferred into an upper non-standard single ridge waveguide and a lower non-standard single ridge waveguide are combined to a non-standard double-ridge-waveguide (20) through a T-joint (3). A two-stage impedance conversion step (10) is manufactured on the inner wall of a U-shaped slot bottom of a T-shaped outer layer (8). The non-standard double-ridge-waveguide is converted into a standard double-ridge-waveguide (6), and at the same time, the radio-frequency signals are transferred to the standard double-ridge-waveguide output port (1). The waveguide single ridges (19) of the upper non-standard single ridge waveguide and the lower non-standard single ridge waveguide are respectively turned, extend to pass through the non-standard double-ridge-waveguide and ultimately enter into the standard double-ridge-waveguide to form a double-ridge (17).

Description

technical field [0001] The invention relates to an amplifier mainly used in a millimeter wave ultra-wideband power synthesis amplifier. Background technique [0002] At present, the working frequency of the relatively mature electronic countermeasure equipment developed in China is below 18GHz, while in the millimeter wave frequency band, the research on electronic countermeasure has just started, especially the demand for the core component of the millimeter wave broadband high-power solid-state power amplifier is becoming more and more urgent. The output power of broadband amplifiers in the millimeter wave band is limited. To achieve high power output, the use of power combining technology is an effective solution. Currently, the most widely used power combining technologies include circuit combining and space power combining. [0003] Broadband circuit synthesis technology usually adopts multi-stage impedance transformation Wilkinson bridge and multi-finger Lange coupler...

AI Technical Summary

Problems solved by technology

However, the existing spatial power combiners mostly use rectangular waveguides as the main transmission line of radio frequency signals. Due to the limited operating bandwidth of the main mode of the rectangular waveguide, such as the standard rectangular waveguides WR34 and WR28, the main mode operating bandwidths are 18GHz-26GHz and 26GHz-40GHz respectively. , unable to cover the frequency range of 18GHz-40GHz

[0005] In summary, the existing power combining technology is still difficult to meet the two requirements of broadband and high combining efficiency in the millimeter wave frequency band

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