RADIO FREQUENCY LOW NOISE AMPLIFIERS
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United States of America Patent
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Issued Date -
Nov 16, 2023
app pub date -
Jul 26, 2023
filing date -
Jul 26, 2023
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Abstract
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for a programmable input impedance circuit for a radio frequency (RF) low noise amplifier (LNA) including a high impedance mode circuit and a low impedance mode circuit. The high impedance mode circuit includes an inductor-degenerated transconductor transistor, an inductor selectively coupled between a source of the inductor-degenerated transconductor transistor and a ground, and a capacitor coupled between a gate of the inductor-degenerated transconductor transistor and the source of the inductor-degenerated transconductor transistor. The low impedance mode circuit includes a shunt resistor selectively coupled between an RF input source and an alternating current (AC) ground.
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