2 results about "Backward-wave oscillator" patented technology

The invention discloses a W-band double-injection-double-channel backward-wave oscillator array system, and aims to overcome the defects that an existing W-band low-voltage backward-wave oscillator is limited in output power, insufficient in power synthesis isolation degree, serious in mutual injection interference and difficult to miniaturize and integrate in structure. By designing two paths of double-strip beam slow-wave backward-wave oscillators and a matched high-isolation power division-synthesis network, multi-source phase self-adaption and high-efficiency power superposition are realized, the output power and the spectrum stability are remarkably improved under the condition of keeping low-voltage driving, meanwhile, the compact device size, the simple microwave interconnection and the system-level integration are considered, and the high-isolation power division-synthesis network is realized. And a high-performance radiation source solution is provided for applications such as high-resolution radar imaging, broadband communication and portable terahertz testing.

The application discloses a frequency multiplication backward wave oscillator and a harmonic amplification method. The frequency multiplication backward wave oscillator comprises a first slow wave structure and a second slow wave structure. The first slow wave structure comprises a first electron beam channel and a first grating extending along the first electron beam channel. The second slow wave structure comprises a second electron beam channel and a second grating and a third grating extending along the second electron beam channel. The working frequency of the third grating is N times of the working frequencies of the first grating and the second grating, wherein N is a positive integer. A connecting waveguide is connected between the first electron beam channel and the second electron beam channel. A first output port is arranged on the second electron beam channel. The application can significantly reduce the starting current density, improve the output power and shorten the starting time by using one slow wave structure to generate electromagnetic waves for one electron beam and then delivering the electromagnetic waves to another slow wave structure to modulate another electron beam.