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Amplifier

Amplifier
Amplifier
A low noise amplifier with Switchable gain Settings comprises a cascoded emitter coupled pair (T1, T2, T5, T6; T3, T4, T7, T8) having a current diverter (T9, T10) which reduces the gain to an intermediate level in response to a control signal on terminals (8, 9). Further control Signals on terminals (5, 10, 11, 12, 13) reduce the gain to a low level by introducing emitter degeneration (R3). To compensate for the increase in input impedance caused by the introduction of emitter degeneration feedback loops (C1, R8; C2, R9) are connected between the diversion path and the amplifier inputs.
US Patent 6784741
Redman-White, William
d5376167-c925-460f-8e9c-13bffda8e0bf

Redman-White, William (Inventors) (2004) Amplifier. US Patent 6784741.

Record type: Patent

Abstract

A low noise amplifier with Switchable gain Settings comprises a cascoded emitter coupled pair (T1, T2, T5, T6; T3, T4, T7, T8) having a current diverter (T9, T10) which reduces the gain to an intermediate level in response to a control signal on terminals (8, 9). Further control Signals on terminals (5, 10, 11, 12, 13) reduce the gain to a low level by introducing emitter degeneration (R3). To compensate for the increase in input impedance caused by the introduction of emitter degeneration feedback loops (C1, R8; C2, R9) are connected between the diversion path and the amplifier inputs.

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More information

Published date: 31 August 2004
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 337760
URI: http://eprints.soton.ac.uk/id/eprint/337760
PURE UUID: 91a8907a-66ac-42cd-97fe-20e1d81543d9

Catalogue record

Date deposited: 02 May 2012 13:50
Last modified: 11 Dec 2021 00:15

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Contributors

Inventor: William Redman-White

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