Back to results
US 2003/0112075 A1Published application
High gain wideband driver amplifier
AssigneeiTerra Communications, LLC
InventorsAndrea Betti-Berutto, Stefano D'Agostino
Life of this patent
Estimating the term…
Abstract
Methods and circuitry for implementing monolithic high gain wideband amplifiers. The invention implements an amplifier with a limiter that also performs a signal dividing function. In a specific embodiment, the limiter is designed to make available two in-phase outputs that are then used to drive two gate input lines of a combiner distributed amplifier.
Claims25
An amplifier circuit comprising:
- a limiter preamplifier including:
- a differential amplifier coupled to receive a differential input signal at its inputs, and configured to generate a differential output signal made up of a first output signal and a second output signal, and
- an output stage having a first differential output amplifier coupled to the first output signal and a second differential output amplifier coupled to the second output signal;
- and
- a combiner distributed amplifier having a first input coupled to a first output of the first differential output amplifier, and a second input coupled to a first output of the second differential output amplifier,
- wherein the output of the first differential output amplifier and the output of the second differential output amplifier are of the same phase.
3 more elements
A method of amplifying a high frequency signal comprising:
- receiving a differential signal at differential inputs of a limiter circuit;
- performing a limiting function on the differential signal;
- using the limiter circuit to amplify the differential signal and to generate a pair of in-phase output signals;
- and
- applying, respectively, the pair of in-phase output signals to a pair of input terminals of a combiner distributed amplifier.
2 more elements
A limiter amplifier comprising:
- a differential amplifier coupled to receive a differential signal at its inputs and configured to generate a differential output signal made up of a first signal and a second signal;
- and
- an output stage having a first differential output amplifier is coupled to the first signal and a second differential output amplifier coupled to the second signal,
- wherein, the first differential output amplifier is configured to generate a first single-ended output signal and the second differential output amplifier is configured to generate a second single-ended output signal that is in phase with the first single-ended output signal.
1 more element
Dependencies are inferred from the claim text.