Marvell International Limited

Globalfoundries Inc.

Konstantinos Manetakis

Xiang Gao

Thomas Gregory Mckay

Cao-Thong Tu

Methods form amplifier device structures that include first-third amplifier devices. The first amplifier device produces an intermediate signal. The second amplifier device is connected to an input of the first amplifier device and produces an amplified inverted output signal. 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. A resistor feedback loop is connected to the input and output of the first amplifier device. A gain ratio of the gain of the third amplifier device to the gain of the second amplifier device matches a resistance ratio of the source resistance of the input signal to the resistance of the resistor added to the source resistance. Also, DC loop circuits are connected to the first-third amplifier devices, and each of the DC loop circuits connects an amplifier device output to an amplifier device input.

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

Embodiments described herein provide circuitry employing an inductor having enhanced circuit area usage. The circuitry includes an inductor having a first loop and a second loop adjoining the first loop to form a figure-eight configuration. The circuitry further includes a circuit component disposed at least partially inside an area defined by at least one of the first loop and the second loop. The inductor has an intersection portion between the first loop and the second loop. An input node is located proximate to the intersection portion, the input node having a first extension disposed inside the first loop. An output node is located proximate to the intersection portion. The output node has a second extension disposed inside the second loop. At least a first capacitor is coupled to the input node and the second extension, and at least a second capacitor coupled to the output node and the first extension.

Systems and methods for an inductor structure with enhanced area usage of a circuit

A circuit comprises an oscillator including a differential tank circuit, an oscillator carrier, and an active device. A phase difference between the oscillator carrier and a device current of the active device is adjusted to reduce upconversion of flicker noise of the oscillator. The circuit includes a common-mode reactance circuit configured to provide an intentionally introduced common-mode inductance, common-mode capacitance, or both, The common-mode reactance circuit is configured to adjust at common-mode impedance of the oscillator. A method comprises adjusting a phase difference between an oscillator carrier of an oscillator and a device current of an active device of the oscillator. The adjusted phase difference is selected to reduce upconversion of flicker noise generated in the oscillator. Adjusting the phase difference includes adjusting a common-mode impedance of the oscillator.

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Lausanne, Switzerland

Konstantinos Manetakis