Modified distributed amplifier to improve low frequency efficiency and noise figure
AssigneeHittite Microwave Corporation
InventorKeith Benson
Life of this patent
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Abstract
A distributed amplifier system has a predetermined output impedance and input impedance and includes an input transmission circuit; an output transmission circuit; at least two amplifiers connected between the input and output transmission circuits; an input termination on the input transmission circuit; and a feedback output termination on the output transmission circuit connected back to the input transmission circuit for reducing low frequency loss while maintaining the predetermined output impedance and input impedance.
Claims15
A distributed amplifier system having a predetermined output impedance and input impedance comprising:
- an input transmission circuit;
- an output transmission circuit;
- at least two amplifiers connected between said input and output transmission circuits;
- an input termination on the input transmission circuit;
- and
- a feedback output termination including a high pass filter coupled between the output transmission circuit and the input transmission circuit for reducing low frequency loss while maintaining said predetermined output impedance and input impedance.
A distributed amplifier system having a predetermined output impedance and input impedance comprising:
- an input transmission circuit;
- an output transmission circuit;
- at least two amplifiers connected between said input and output transmission circuits;
- an input termination on the input transmission circuit;
- and
- two or more feedback output terminations on the output transmission circuit connected back to the input transmission circuit for reducing low frequency loss while maintaining said predetermined output impedance and input impedance.
Dependencies are inferred from the claim text.