Wideband low noise amplifier having DC loops with back gate biased transistors

An amplifier device circuit structure comprising:

• a first amplifier device, wherein the first amplifier device inverts and amplifies an input signal to produce an intermediate signal;
• a second amplifier device, wherein the second amplifier device is connected to an input of the first amplifier device and inverts and amplifies the input signal to produce an amplified inverted output signal;
• a third amplifier device connected to an output of the first amplifier device, wherein the third amplifier device inverts the intermediate signal to produce an amplified non-inverted output signal that is complementary to the amplified inverted output signal;
• and
• a feedback loop connected to the output of the first amplifier device and to the input of the first amplifier device, and wherein the feedback loop includes a resistor, wherein a gain ratio of a gain of the third amplifier device to a gain of the second amplifier device matches a resistance ratio of a source resistance of the input signal to a resistance of the resistor added to the source resistance,
• wherein the first amplifier device, the second amplifier device, and the third amplifier device each include a direct current (DC) loop circuit that includes biased transistors, and
• wherein each of the biased transistors has a back gate connected to at least one reference device that generates a bias current.

A method of forming an amplifier device circuit structure comprising:

• forming a first amplifier device connected to invert and amplify an input signal, and to produce an intermediate signal;
• forming a second amplifier device connected to an input of the first amplifier device and invert and amplify the input signal, and to produce an amplified inverted output signal;
• forming a third amplifier device connected to an output of the first amplifier device, to invert the intermediate signal, and to produce an amplified non-inverted output signal that is complementary to the amplified inverted output signal;
• and
• forming a feedback loop connected to the output of the first amplifier device, and to an input of the first amplifier device,
• wherein the first amplifier device, the second amplifier device, and the third amplifier device are formed to each include a direct current (DC) loop circuit that includes biased transistors, and
• wherein each of the biased transistors are formed to have a back gate connected to at least one reference device that generates a bias current.