The European Union's Seventh R & D Framework Program (FP7) provides funding support. The European NMP R & D team led by the French Atomic Energy and Alternative Energy Commission (CEA) scientific and technical personnel has made major technological breakthroughs in the development of small high-power microwave transmitters. The small and high-power microwave oscillator developed to produce electromagnetic radiation has broad revolutionary application prospects in radar detection, radio and television, satellite communications, and of course, including microwave ovens.
As science on the atomic and molecular scales, nanotechnology is increasingly penetrating all walks of life. Microwave oscillators developed using nanotechnology can artificially manipulate and magnetize nanomagnets without using external magnetic fields. Moreover, under appropriate conditions, the microwave oscillator can withstand the continuous impact of the microwave resonance frequency. This microwave generating device, which is called a spin-shift nano oscillator, has the characteristics of small volume, high coordination and normal operation under wide temperature conditions. The key to the success of the technology is to increase the output power. The new technology developed by the NMP R & D team successfully improved the conversion efficiency and power output of the spin-transfer nano oscillator. To increase the output power, we must first solve the synchronization of the oscillation phase of the multi-oscillator (array), and optimize the design of the friction spring, which is a periodic motion of the oscillation within a given time, which has become a difficult problem for the R & D team to overcome. High technical requirements.
After repeated comparison experiments, the scientific and technical personnel of the NMP R & D team realized the design and manufacture of a new type of spin-transfer nano-oscillator prototype on the traditional production line. Through optimization and verification, four different coupling mechanisms between the oscillator and the locked phase were combined. Theoretical derivation and experimental methods finally determine the optimal synchronization phase. The results obtained have confirmed that the output power of the new spin-transfer nano oscillator has been greatly improved, while the phase noise has been effectively reduced. The R & D team is planning to start the construction of 10 pilot facilities for the simultaneous optimization of spin-transfer nano-oscillator array devices.
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