Patent ID: 7522891

Claim:
A digital high frequency peak detection module comprises: peak detecting circuit operably coupled to detect a peak value of a high frequency signal, wherein the peak detecting circuit includes: an amplifier having a first input, a second input, and an output, wherein the first input is operably coupled to receive the high frequency signal; transistor having a an input, a first node, and a second node, wherein the input is coupled to the output of the amplifier, the second node is coupled to a supply voltage, and the first node is coupled to the second input of the amplifier, wherein coupling of the transistor provides positive feedback to the amplifier; capacitor operably coupled to the first node of the transistor and to a reference potential, wherein a voltage imposed on the capacitor represents the peak value of the high frequency signal; and peak computing circuit operably coupled to generate a digital peak value from the peak value, wherein the peak computing circuit further comprises includes: divider network operably coupled to the supply voltage and the reference potential to provide a plurality of reference voltages; plurality of comparators operably coupled to compare the peak value with the plurality of reference voltages to produce a representative voltage; and digital coding module operably coupled to encode the representative voltage into the digital peak value.