Cascode gain boosting system and method for a transmitter
First Claim
1. A communication device, comprising:
- a first polarity driver circuit,wherein the first polarity driver circuit comprises;
a first current source;
a first amplifier,wherein the first amplifier is arranged in a feedback configuration with the first current source, andwherein the first amplifier is configured to receive an input signal;
a first cascode device,wherein the first cascode device is arranged in a cascode configuration with the first current source; and
a second amplifier,wherein the second amplifier is arranged in a feedback configuration with the first cascode device, andwherein the second amplifier is configured to receive a bias control signal.
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Accused Products
Abstract
A communication device includes a first polarity driver circuit. The first polarity driver circuit includes a first current source. The first polarity driver circuit includes a first amplifier. The first amplifier is arranged in a feedback configuration with the first current source. The first amplifier is configured to receive an input signal. The first polarity driver circuit includes a first cascode device. The first cascode device is arranged in a cascode configuration with the first current source. The first polarity driver circuit includes a second amplifier. The second amplifier is arranged in a feedback configuration with the first cascode device. The second amplifier is configured to receive a bias control signal.
317 Citations
46 Claims
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1. A communication device, comprising:
a first polarity driver circuit, wherein the first polarity driver circuit comprises; a first current source; a first amplifier, wherein the first amplifier is arranged in a feedback configuration with the first current source, and wherein the first amplifier is configured to receive an input signal; a first cascode device, wherein the first cascode device is arranged in a cascode configuration with the first current source; and a second amplifier, wherein the second amplifier is arranged in a feedback configuration with the first cascode device, and wherein the second amplifier is configured to receive a bias control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 41, 42, 43)
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28. A method of communicating information, comprising the steps of:
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(a) receiving an input signal; (b) amplifying the input signal to generate a first signal; (c) amplifying the first signal from step (b) to supply a second signal; (d) supplying a first feedback signal from step (c) to step (b); (e) receiving a bias control signal; (f) amplifying the bias control signal to generate a third signal; (g) amplifying the second signal supplied from step (c) in accordance with the third signal; and (h) supplying a second feedback signal from step (g) to step (f), wherein step (h) comprises the step of; (h1) modifying a level of amplification provided in step (f) to maintain an amplitude of the second feedback signal substantially constant. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 44, 45, 46)
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Specification