1 That's a heterodyne receiver.

2 The carrier signal injection method and the heterodyning algorithm for the extraction of high frequency current containing rotor space-position information are all discussed.

3 But by using a heterodyning architecture, the Harvard researchers demonstrated twin quantum cascade lasers, whose mixed output is in the terahertz gap.

4 Using this CO2 laser, the experiment of three-frequency heterodyning is suooefully carried out.

5 The heterodyning principle is well known in nonlinear optics as difference frequency generation (DFG).

6 The second, we summarize the optical heterodyning modulation technology, and calculate the spectrum of optical mm-wave signal generated by this modulation technology.

7 The problem of recovery is implemented in a second order low-pass filter with heterodyning process.

8 The methods using rotating vector, carrier frequency excitation and heterodyning, tracking observers for rotor position estimation are discussed.