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@@ -22,4 +22,20 @@ ## Design -TODO +### Digitally-Stepped Attenuator + + + +The digitally-stepped attenuator is comprised of 2 transmission gates and an inverter, effectively creating a SPDT switch. One throw leads to a fixed resistor value, the other goes directly to next stage. There are a total of 4 of these stages, each comprising a slightly higher attenuation than the previous stage. They are controlled via 4 control lines. It is setup in a pseudo-differential configuration to attenuate both phases. + +## Low-Noise Amplifier + + + +The LNA is a fully-differential common-source amplfier with active loads and a tail current mirror. + +## Power Detector + + + +The power detector works by taking the differential input, creating a self-mixed DC current proportinal to the input power, and mirroring it and convering it into a voltage. This gets sampled by an off-chip ADC and MCU to drive the DSA. \ No newline at end of file
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