3.1.6 Klystron or TWT Receiver and Transmit RF Example
Figure 10 Analog versus Digital Receiver for Klystron Systems
Analog Receiver - Klystron
A typical analog receiver in a klystron system has a component arrangement 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, and so on.
RVP Digital Receiver - Klystron
The RVP900 transmitter function 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 support advanced algorithms, for example, range/velocity
ambiguity resolution or pulse compression for low power TWT systems.
Chapter 3 – Functional Description
35
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