Gain and phase detector having dual logarithmic amplifiers

A measurement system comprising:

• a first log amp;
• and
• a second log amp;
• wherein the first and second log amps are progressive compression log amps co-integrated on a substrate.

A measurement system comprising:

• a first log amp;
• and
• a second log amp;
• wherein the first and second log amps are co-integrated on a substrate;
• and
• wherein the first and second log amps are arranged symmetrically about a center line.

A method comprising:

• logarithmically amplifying a first input signal, thereby generating a first output signal;
• logarithmically amplifying a second input signal, thereby generating a second output signal;
• and
• differentially and continuously processing the first and second output signals;
• wherein logarithmically amplifying comprises progressively compressing.

A method comprising:

• logarithmically amplifying a first input signal, thereby generating a first output signal;
• logarithmically amplifying a second input signal, thereby generating a second output signal;
• differentially processing the first and second output signals;
• utilizing a signal to be examined as the first input signal;
• and
• utilizing a reference signal as the second input signal.

A method comprising:

• logarithmically amplifying a first input signal, thereby generating a first output signal;
• logarithmically amplifying a second input signal, thereby generating a second output signal;
• differentially processing the first and second output signals;
• utilizing a modulated signal for the first input signal;
• and
• utilizing a modulation signal for the second input signal.

A measurement system comprising:

• a first log amp;
• a second log amp;
• and
• a differencing circuit coupled to the first and second log amps, wherein the differencing circuit is arranged to continuously process outputs from the first and second log amps;
• wherein the first and second log amps comprise progressive compression log amps.

A measurement system comprising:

• a first log amp;
• and
• a second log amp;
• wherein the first and second log amps comprise progressive compression log amps co-integrated on a substrate.