US 2022/0029587 A1Published application

Low noise amplifier circuit

OwnerPete Sivonen, Jarkko Jussila +1inventors

InventorsPete Sivonen, Jarkko Jussila, Sami Vilhonen

Life of this patent

Estimating the term…

Loading patent…

Abstract

An amplifier for converting a single-ended input signal to a differential output signal. The amplifier comprises a first transistor, a second transistor, a third transistor and a fourth transistor. The first transistor, configured in common-source or common-emitter mode, receives the single-ended input signal and generates a first part of the differential output signal. The second transistor, also configured in common-source or common-emitter mode, generates a second part of the differential output signal. The third and fourth transistors are capacitively cross-coupled. The amplifier further comprises inductive degeneration such that a source or emitter of the first transistor is connected to a first inductor and a source or emitter of the second transistor is connected to a second inductor.

Claims2

Dependent claims

A low noise amplifier for converting a single-ended input signal to a differential output signal, the amplifier comprising:

a first transistor, configured in common-source mode, to receive the single-ended input signal and generate a first part of the differential output signal;
a second transistor, configured in common-source mode, to generate a second part of the differential output signal;
and
a third transistor and a fourth transistor, and wherein the third transistor and forth transistor are cross-coupled and connected to the first and second transistors such that:
a drain of the first transistor is coupled to a gate of the fourth transistor via a first capacitor;
a drain of the second transistor is coupled to a gate of the third transistor via a second capacitor;
and
the drain of the first transistor is connected to a source of the third transistor, the drain of the second transistor is connected to a source of the fourth transistor;
the drain of the first transistor is coupled to a gate of the second transistor directly or via a third capacitor;
and
a source of the first transistor is connected to a first inductor and a source of the second transistor is connected to a second inductor, and wherein a gate of the first transistor is configured to receive the single-ended input signal.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/364,931Filed 1 Jul 2021
Priority: EP 14157220.628 Feb 2014
Published: 27 Jan 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

H03F 1/56
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements: modifications of…
H03F 1/223
By use of cascode coupling, i.e. earthed cathode or emitter stage followed by earthed grid or base stage respectively: with mosfet's
H03F 1/26
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements: modifications of…
H03F 3/193
With semiconductor devices only: with field-effect devices

Family

Application15/120,304Continuation · filed 19 Aug 2016
Application15/916,411Continuation · filed 9 Mar 2018
Application16/563,436Continuation · filed 6 Sep 2019
Application17/364,931Continuation
US 10,454,431 B2Related patent
US 11,057,005 B2Related patent
US 2017/0070197 A1Published application
US 2018/0198422 A1Published application
US 2019/0393844 A1Published application
US 9,948,248 B2Related patent
US 2022/0029587 A1This patent

From the US filing history. Foreign family members aren’t listed.