A "'block upconverter "'( BUC ) is used in the MHz intermediate frequency ( IF ) to K u band or C band.
42.
Waves traveling parallel to the axis have maximum frequency ( twice the rotation rate ), and waves at intermediate angles have intermediate frequencies.
43.
The difference frequency is then amplified and filtered in an'intermediate frequency'or i . f . amplifier before being converted back to audible frequencies again.
44.
This filter, which is used before demodulation, is actually a low-pass filter with 6 dB suppression at the intermediate frequency ( IF ) carrier.
45.
Among these was a suitable local oscillator about 45 MHz different than the transmitter signal, which fed the intermediate frequency section of the receiver circuits.
46.
During the development of radar in World War II, the superheterodyne principle was essential for downconversion of the very high radar frequencies to intermediate frequencies.
47.
This method is made possible by first down converting the signal, then digitizing the intermediate frequency and using superheterodyne or FFT techniques to acquire the spectrum.
48.
Electromagnetic radiation in the intermediate frequency range has found a place in modern medical practice for the treatment of bone healing and for nerve stimulation and regeneration.
49.
Basically, you tune a radio by mixing ( multiplying ) a local oscillator with the RF signal to bring it down to the IF ( intermediate frequency ).
50.
Since the frequency separation between the bandpass and the image frequency is 2f _ \ mathrm { IF } \ !, a higher intermediate frequency improves image rejection.
