</tr>
</table>
The controlled source E1 is dependent on the voltage at Node 4, i.e. the antenna load, and creates an exact replica of it that is fed into the echo block. Node 6 indeed represents the receive antenna, or the receiver's entry point. The received signal is amplified by the low-noise amplifier '''Gain Block''' LNA with a gain of 5e+3. This signal is then mixed with the other half of the split chirp signal using the '''Multiplier Block''' MIX. The down-converted signal is then amplified once more by the '''Gain Block''' AMP with a gain of 50 and is passed through a generic lowpass filter block with a cutoff frequency of 2MHz.