Amplifier with boosted peaking
First Claim
Patent Images
1. An amplifier, comprising:
- a load circuit comprising a plurality of inductor cells, wherein each of the inductor cells has an impedance that is higher at a first frequency than at a second frequency, the first frequency being higher than the second frequency;
a drive circuit configured to receive an input signal, and to drive the load circuit based on the input signal to generate an amplified signal; and
a controller configured to adjust a number of the inductor cells that are enabled to tune a peaking gain of the amplifier.
1 Assignment
0 Petitions
Accused Products
Abstract
In one implementation, an amplifier comprises a load circuit comprising a plurality of inductor cells, and a drive circuit configured to receive an input signal, and to drive the load circuit based on the input signal to generate an amplified signal. The amplifier also comprises a controller configured to tune a peaking gain of the amplifier by adjusting a number of the inductor cells that are enabled.
42 Citations
26 Claims
-
1. An amplifier, comprising:
-
a load circuit comprising a plurality of inductor cells, wherein each of the inductor cells has an impedance that is higher at a first frequency than at a second frequency, the first frequency being higher than the second frequency; a drive circuit configured to receive an input signal, and to drive the load circuit based on the input signal to generate an amplified signal; and a controller configured to adjust a number of the inductor cells that are enabled to tune a peaking gain of the amplifier. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An amplifier, comprising:
-
a load circuit comprising a resistor and a plurality of inductor cells, wherein each of the inductor cells comprises; an inductor transistor having a drain, a gate and a source, wherein the resistor is coupled between the gate and the drain of the inductor transistor; and a first switch configured to selectively couple the source of the inductor transistor to a supply rail; a drive circuit configured to receive an input signal, and to drive the load circuit based on the input signal to generate an amplified signal, wherein the drive circuit is coupled to the drain of the inductor transistor of each of the inductor cells; and a controller configured to adjust a number of the inductor cells that are enabled to tune a peaking gain of the amplifier, wherein, for each of the inductor cells, the controller is configured to turn on the respective first switch to enable the inductor cell, and to turn off the respective first switch to disable the inductor cell. - View Dependent Claims (9, 10, 11, 12)
-
-
13. A method for tuning a peaking gain of an amplifier, comprising:
-
receiving an input signal; driving a load circuit of the amplifier based on the received input signal to generate an amplified signal, the load circuit comprising a plurality of inductor cells, wherein each of the inductor cells has an impedance that is higher at a first frequency than at a second frequency, the first frequency being higher than the second frequency; and tuning the peaking gain of the amplifier by adjusting a number of the inductor cells that are enabled. - View Dependent Claims (14, 15, 16)
-
-
17. A method for tuning a peaking gain of an amplifier, comprising:
-
receiving an input signal; driving a load circuit of the amplifier based on the received input signal to generate an amplified signal, the load circuit comprising a resistor and a plurality of inductor cells, wherein each of the inductor cells comprises an inductor transistor having a drain, a gate and a source, the resistor is coupled between the gate and the drain of the inductor transistor in each of the inductor cells; and tuning the peaking gain of the amplifier by adjusting a number of the inductor cells that are enabled, wherein tuning the peaking gain comprises enabling each one of the number of the inductor cells by coupling the source of the respective inductor transistor to a supply rail. - View Dependent Claims (18, 19)
-
-
20. An apparatus for tuning a peaking gain of an amplifier, comprising:
-
means for receiving an input signal; means for driving a load circuit of the amplifier based on the received input signal to generate an amplified signal, the load circuit comprising a plurality of inductor cells, wherein each of the inductor cells has an impedance that is higher at a first frequency than at a second frequency, the first frequency being higher than the second frequency; and means for tuning the peaking gain of the amplifier by adjusting a number of the inductor cells that are enabled. - View Dependent Claims (21, 22, 26)
-
-
23. An apparatus for tuning a peaking gain of an amplifier, comprising:
-
means for receiving an input signal; means for driving a load circuit of the amplifier based on the received input signal to generate an amplified signal, the load circuit comprising a resistor and a plurality of inductor cells, wherein each of the inductor cells comprises an inductor transistor having a drain, a gate and a source, the resistor is coupled between the gate and the drain of the inductor transistor in each of the inductor cells; and means for tuning the peaking gain of the amplifier by adjusting a number of the inductor cells that are enabled, wherein the means for tuning the peaking gain comprises means for enabling each one of the number of the inductor cells by coupling the source of the respective inductor transistor to a supply rail. - View Dependent Claims (24, 25)
-
Specification