Systems for and methods of wideband distributed amplification
AssigneeAvago Technologies International Sales Pte. Limited
InventorsGuansheng Li, Heng Zhang, Delong Cui, Jun Cao
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Abstract
Systems and methods are related to a distributed amplification. An amplification device can include cells including a first cell and a second cell and transmission lines including a first line and a second line. The first cell is coupled to the first line, and the second cell is coupled to the second line. The first line is configured to provide a first delay related to a delay between the first cell and the second cell. The device also includes a summer including a first input coupled to the first line and second input coupled to the second line. The summer is configured to provide an output signal.
Claims20
A device comprising:
- a plurality of cells comprising a first cell and a second cell;
- a plurality of transmission lines comprising a first line and a second line, wherein the first cell is coupled to the first line and the second cell is coupled to the second line, wherein the first line is configured to provide a first delay related to a delay between the first cell and the second cell;
- and
- a summer comprising a first input coupled to the first line and second input coupled to the second line, wherein the summer is configured to provide an output signal, wherein the summer comprises a first transistor having a transconductance related to an inverse of inductance associated with the first line divided by capacitance associated with the first line.
An amplifier in an integrated circuit, the amplifier comprising:
- a first network comprising a transmission line and a plurality of cells, each of the cells having a cell input coupled to a node on the transmission line;
- a plurality of circuits, each of the circuits being coupled to a respective cell of the cells, wherein at least one of the circuits comprises a second network comprising a capacitance and an inductance;
- and
- a summer coupled to the circuits, wherein the summer is configured to provide an output signal, wherein the summer comprises at least one transistor have a transconductance inversely related to a quotient of the inductance and the capacitance.
A method of providing an output signal, the method comprising:
- providing a first signal at a first node on an input transmission line to a first cell;
- amplifying the first signal to provide a first amplified signal;
- providing a second signal at a second node on the input transmission line to a second cell, the second signal being delayed by a first delay with respect to the first signal;
- amplifying the second signal to provide a second amplified signal;
- delaying the first amplified signal with respect to the second amplified signal to compensate for the first delay;
- summing the first amplified signal and the second amplified signal to provide the output signal;
- and
- providing the output signal to an output network configured to perform series peaking, shunt-series peaking, or Tcoil peaking.
Dependencies are inferred from the claim text.