W-waveband high power integrated synthesis frequency multiplication source

Abstract

The invention discloses a W-waveband high power integrated synthesis frequency multiplication source. Ka-waveband signals are generated by Ku-waveband signals through active second harmonic generation, then equiamplitude opposition power distribution is achieved through a Ka-waveband balun, two branches of signals obtained after distribution are subjected to Ka-waveband power amplification and each drives a W-waveband passive frequency tripler in the corresponding branch, and after generated W-waveband signals are amplified, power synthesis outputting is conducted. According to the method for synthesizing the frequency multiplication source through W-waveband high power integration, the output power is boosted in the mode of power synthesis frequency multiplication, balanced amplitude and phase adjustment of power synthesis is achieved by adding a mechanical adjustment mechanism to a W-waveband power synthesis part, influence on the output power caused by unbalancedness between the two synthesis branches is reduced, and synthesis efficiency is improved. Meanwhile, an EBG structure is adopted in the Ka-waveband balun part so that cavity resonance suppression can be achieved, isolation among cavities is enhanced, and the stable integrated high-power output frequency multiplication source which covers the full W-waveband ranging from 75 GHz to 110 GHz is finally achieved.

Description

technical field [0001] The invention relates to a W-band high-power integrated synthetic frequency doubling source, which can be used in various millimeter-wave and submillimeter-wave electronic and measurement systems, and belongs to the field of microwave and millimeter-wave technology. Background technique [0002] W-band refers to the electromagnetic frequency band with a frequency range of 75-110GHz. This frequency band contains rich spectrum resources and is widely used in many fields such as radar imaging, electronic countermeasures, communications, environmental monitoring, and weather forecasting. One of the most critical technologies for the development and utilization of W-band spectrum resources is the solid-state signal source. At present, there are mainly two ways to realize the W solid-state signal source, one is a solid-state oscillator source, and the other is a solid-state frequency multiplication source. Compared with the oscillator source, the frequency ...

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Problems solved by technology

[0004] When using the power synthesis frequency doubling method to realize the W-band integrated frequency doubling source, there are two main problems: the output signal covers the entire 75-110GHz band, and the matching characteristics of the broadband circuit on the two synthesis channels and the device parameter characteristics are within the entire frequency band. It is difficult to keep consistent, and the unbalanced deviation at some frequency points will affect the synthesis efficiency of the final stage power synthesis, thus affecting the power output

This structure can reduce the risk of development, but it has the disadvantages of high cost, large size and inconvenient use

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