A Low Noise Electronic Circuit

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Annema, Anne J. and Leenaerts, Dominicus M.W. and Vreede de, Petrus W.H. (2003) A Low Noise Electronic Circuit. Patent.

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Abstract:An electronic circuit, which can be used as a Low Noise Amplifier LNA, comprises two complementary Field Effect Transistors M1, M2 M5, M6, each having a gate, a source and a drain. The gates are connected together as a common input terminal, and the drains are connected together as a common output terminal. The electronic circuit further has a feedback circuit, e.g. in the form of two anti-parallel Field Effect Transistors M3, M4 M7, M8, connected between the common input terminal and the common output terminal. This feedback circuit has an impedance at radio frequencies which is high-ohmic compared to impedance levels of the two transistors. This ensures a high gain at radio frequencies, and at the same time it can be implemented with only a few components. It also ensures high linearity and a very low current in the feedback circuit, and thus little or no noise is added to the circuit.An electronic circuit, which can be used as a Low Noise Amplifier (LNA), comprises two complementary Field Effect Transistors (M1, M2; M5, M6), each having a gate, a source and a drain. The gates are connected together as a common input terminal, and the drains are connected together as a common output terminal. The electronic circuit further has a feedback circuit, e.g. in the form of two anti-parallel Field Effect Transistors (M3, M4; M7, M8), connected between the common input terminal and the common output terminal. This feedback circuit has an impedance at radio frequencies which is high-ohmic compared to impedance levels of the two transistors. This ensures a high gain at radio frequencies, and at the same time it can be implemented with only a few components. It also ensures high linearity and a very low current in the feedback circuit, and thus little or no noise is added to the circuit.
Item Type:Patent
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/68232
Official URL:http://v3.espacenet.com/textdoc?IDX=WO03049280
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