Chapter 2 _______________________________________________ Introduction and Specifications
VAISALA_______________________________________________________________________ 37
0916-010
Figure 10 Analog vs Digital Receiver for Magnetron Systems
2.7.3 Klystron or TWT Receiver and
Transmit RF Example
For a typical analog receiver of a klystron system (see Figure 11 on page
36 (top portion)), the arrangement of components is similar to the
magnetron case, except that the COHO operates at a fixed phase and
frequency, a phase shifter is included for second trip echo filtering, and
there is no AFC feedback required. The phase stability of a Klystron
system is better than a magnetron, but the system is still constrained by
limited linear dynamic range, IAGC inaccuracy, quad phase detector
asymmetries, phase shifter inaccuracies, etc.
The RVP900 transmitter function now plays the role of a programmable
COHO. The digitally synthesized transmit waveform can be phase,
frequency, and amplitude modulated (no separate phase shifter is
required), and even produce multiple simultaneous transmit frequencies.
These capabilities are used to support advanced algorithms, for example,
To Next Page
Loading...
Need help?
General