Communication apparatus and low noise amplifying method
AssigneeSamsung Electronics Co., Ltd.
InventorsJae-woo Park, Chang-sik Yoo, Jin-soo Park, Heung-bae Lee, Young-eil Kim
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Abstract
A communication apparatus and a low noise amplifying method. The communication apparatus includes a gain adjusting unit to adjust a gain of an input signal; a combiner to generate an output signal using the signal gain-adjusted at the gain adjusting unit; and a feedback unit which provides a feedback signal, which is generated using the output signal generated at the combiner, to an input stage. Accordingly, various frequency bands defined in the wireless standards can be supported. Since the load impedance is generated without resistance, the manufacturing cost and the product size can be reduced.
Claims20
A communication apparatus comprising:
- a gain adjusting unit configured to adjust a gain of an input signal from an input unit;
- an output matching unit configured to generate and output a load impedance;
- a combiner configured to generate an output signal by combining the gain-adjusted input signal with a signal applied to the load impedance;
- and
- a feedback unit configured to provide, to the input unit, a feedback signal generated using the output signal generated at the combiner,
- wherein the gain adjusting unit comprises a plurality of transistors, at least one of the transistors is connected to the feedback unit and at least one of the transistors is connected to the input unit.
A low noise amplifying method comprising:
- adjusting, by a gain adjusting unit, a gain of an input signal received from an input unit;
- generating and outputting a load impedance;
- generating an output signal by combining the gain-adjusted input signal with a signal applied to the load impedance;
- and
- providing, by a feedback unit, a feedback signal, which is generated using the generated output signal, to the input unit,
- wherein the gain adjusting unit comprises a plurality of transistors, at least one of the transistors is connected to the feedback unit and at least one of the transistors is connected to the input unit.
Dependencies are inferred from the claim text.