Method for generating ultra-wideband multi-band frequency microwave signal
A microwave signal and generation method technology, applied in electromagnetic wave transmission systems, electromagnetic transmitters, electrical components, etc., can solve the problems of few frequency components, narrow and not many multi-band microwave signal spectrum bandwidths, etc., to achieve easy control, good Spectral characteristics, easy tuning effect
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Embodiment 1
[0031] 1. After the light source is modulated by FM1 and FM2, OFC1 and OFC2 with frequency spacing of 40 GHz and 20 GHz are generated respectively. After beating frequency, a multi-band microwave signal with a frequency spacing of 20 GHz, a spectral bandwidth of 300 GHz, and a good spectral line purity is obtained ( See attached figure 2 ).
[0032] 2. When the frequencies of RF1 and RF2 are set to f 1 =40GHz,f 2 = 20GHz; f 1 =30GHz, f 2 = 15GHz; f 1 =20GHz, f 2 = 10GHz; f 1 =10GHz,f 2 When =5GHz, the corresponding RF1 and RF2 frequency difference Δf is 20GHz, 15GHz, 10GHz and 5GHz successively, obtained the multi-band microwave signal that frequency interval is respectively 20GHz, 15GHz, 10GHz and 5GHz (see the image 3 ).
Embodiment 2
[0034] 3. Other parameters remain unchanged, and when the frequency offsets of FM1 and FM2 are set to 400GHz and 200GHz; 360GHz and 180GHz; 120GHz and 60GHz; 100GHz and 50GHz, four different multi-band microwave signals are generated. The spectral bandwidth of the output multi-band microwave signal increases as the frequency offset of the two FMs increases. When the FM frequency frequency offset increases to a certain value, the spectral bandwidth of the generated multi-band microwave signal remains unchanged. When the frequency offsets of FM1 and FM2 are 360GHz and 180GHz respectively, the spectrum envelope of the output multi-band microwave signal is the flattest, the average power is the highest, and the spectrum bandwidth is the largest (see attached Figure 4 ).
[0035] 4. When the input power of the light source is changed to 5dBm, 10dBm, 15dBm and 20dBm in turn, the average spectral power of the output multi-band microwave signal increases with the increase of the inp...
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