| 摘要 |
<p>A pulse driver (18) receives an input from a marker generator (21) before sending an output to a harmonic oscillator (12), which produces the transmitted signal that is sent to an antenna (16). Timing is controlled by a timing circuit (34). The received signal comes from the antenna (16) to a sampler circuit (30), which receives an input from the harmonic oscillator (12). The output of the sampler circuit (30) is fed to an amplifier (31), and then to a bandpass filter (32), which outputs baseband video.</p> |
