Radio frequency signal splitting with differential filter and low noise amplifiers
AssigneeSkyworks Solutions, Inc.
InventorDavid Richard Pehlke
Life of this patent
Estimating the term…
Abstract
Apparatus and methods for radio frequency (RF) signal splitting are disclosed. In certain embodiments, a front-end system includes a filter that filters an RF receive signal to generate a differential filtered RF signal between a first output and a second output, a first low noise amplifier (LNA) that generates a first amplified RF signal by amplifying a first component of the differential filtered RF signal received from the first output, a second LNA that generates a second amplified RF signal by amplifying a second component of the differential filtered RF signal received from the second output, a first multi-throw switch that receives the first amplified RF signal, and a second multi-throw switch that receives the second amplified RF signal.
Claims21
A mobile device comprising:
- an antenna configured to receive a radio frequency receive signal;
- and
- a front-end system including a filter configured to filter the radio frequency receive signal to generate a differential filtered radio frequency signal between a first output and a second output, a first low noise amplifier configured to generate a first amplified radio frequency signal by amplifying a first component of the differential filtered radio frequency signal received from the first output, a second low noise amplifier configured to generate a second amplified radio frequency signal by amplifying a second component of the differential filtered radio frequency signal received from the second output, a first multi-throw switch configured to receive the first amplified radio frequency signal, and a second multi-throw switch configured to receive the second amplified radio frequency signal.
A method of radio frequency signal splitting in a mobile device, the method comprising:
- filtering a radio frequency receive signal using a filter to generate a differential filtered radio frequency signal between a first output and a second output of the filter;
- amplifying a first component of the differential filtered radio frequency signal received from the first output to generate a first amplified radio frequency signal;
- amplifying a second component of the differential filtered radio frequency signal received from the second output to generate a second amplified radio frequency signal;
- receiving the first amplified radio frequency signal as an input to a first multi-throw switch;
- and
- receiving the second amplified radio frequency signal as an input to a second multi-throw switch.
A front-end system comprising:
- a filter configured to filter a radio frequency receive signal to generate a differential filtered radio frequency signal between a first output and a second output;
- a first low noise amplifier configured to generate a first amplified radio frequency signal by amplifying a first component of the differential filtered radio frequency signal received from the first output;
- a second low noise amplifier configured to generate a second amplified radio frequency signal by amplifying a second component of the differential filtered radio frequency signal received from the second output;
- a first multi-throw switch configured to receive the first amplified radio frequency signal;
- and
- a second multi-throw switch configured to receive the second amplified radio frequency signal.
-40. (canceled)
Dependencies are inferred from the claim text.