Diversity receiver front end system with variable-gain amplifiers
First Claim
1. A receiving system comprising:
- a first input multiplexer configured to receive a first input signal from a first antenna, the first antenna being a high-band antenna;
a second input multiplexer configured to receive a second input signal from a second antenna, the second antenna being a low-band antenna configured to receive signals transmitted at lower frequency bands than the first antenna;
a controller configured to selectively activate one or more of a plurality of paths between an input of the first input multiplexer, an input of the second input multiplexer, and an output of an output multiplexer, the first input multiplexer and the second input multiplexer each including a splitter configured to direct signals along a single path and to direct signals simultaneously along two or more of the plurality of paths, the output multiplexer including a combiner configured to combine signals from two or more of the plurality of paths such that the output multiplexer is configured to combine signals received by the first input multiplexer and the second input multiplexer;
a plurality of bandpass filters, each one of the plurality of bandpass filters disposed along a corresponding one of the plurality of paths and configured to filter a signal received at the bandpass filter to a respective frequency band; and
a plurality of variable-gain amplifiers (VGAs), each one of the plurality of VGAs disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the VGA with a gain controlled by an amplifier control signal received from the controller.
1 Assignment
0 Petitions
Accused Products
Abstract
Diversity receiver front end system with variable-gain amplifiers. A receiving system can include a controller configured to selectively activate one or more of a plurality of paths between an input of a first multiplexer and an output of a second multiplexer. The receiving system can further include a plurality of bandpass filters, each one of the plurality of bandpass filters disposed along a corresponding one of the plurality of paths and configured to filter a signal received at the bandpass filter to a respective frequency band. The receiving system can further include a plurality of variable-gain amplifiers (VGAs), each one of the plurality of VGAs disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the VGA with a gain controlled by an amplifier control signal received from the controller.
-
Citations
20 Claims
-
1. A receiving system comprising:
-
a first input multiplexer configured to receive a first input signal from a first antenna, the first antenna being a high-band antenna; a second input multiplexer configured to receive a second input signal from a second antenna, the second antenna being a low-band antenna configured to receive signals transmitted at lower frequency bands than the first antenna; a controller configured to selectively activate one or more of a plurality of paths between an input of the first input multiplexer, an input of the second input multiplexer, and an output of an output multiplexer, the first input multiplexer and the second input multiplexer each including a splitter configured to direct signals along a single path and to direct signals simultaneously along two or more of the plurality of paths, the output multiplexer including a combiner configured to combine signals from two or more of the plurality of paths such that the output multiplexer is configured to combine signals received by the first input multiplexer and the second input multiplexer; a plurality of bandpass filters, each one of the plurality of bandpass filters disposed along a corresponding one of the plurality of paths and configured to filter a signal received at the bandpass filter to a respective frequency band; and a plurality of variable-gain amplifiers (VGAs), each one of the plurality of VGAs disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the VGA with a gain controlled by an amplifier control signal received from the controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A radio-frequency (RF) module comprising:
-
a packaging substrate configured to receive a plurality of components; and a receiving system implemented on the packaging substrate, the receiving system including a first input multiplexer configured to receive a first input signal from a first antenna, the first antenna being a high-band antenna, a second input multiplexer configured to receive a second input signal from a second antenna, the second antenna being a low-band antenna configured to receive signals transmitted at lower frequency bands than the first antenna, a controller configured to selectively activate one or more of a plurality of paths between an input of the first input multiplexer, an input of the second input multiplexer, and an output of an output multiplexer, the first input multiplexer and the second input multiplexer each including a splitter configured to direct signals along a single path and to direct signals simultaneously along two or more of the plurality of paths, the output multiplexer including a combiner configured to combine signals from two or more of the plurality of paths such that the output multiplexer is configured to combine signals received by the first input multiplexer and the second input multiplexer, a plurality of bandpass filters, each one of the plurality of bandpass filters disposed along a corresponding one of the plurality of paths and configured to filter a signal received at the bandpass filter to a respective frequency band, and a plurality of variable-gain amplifiers (VGAs), each one of the plurality of VGAs disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the VGA with a gain controlled by an amplifier control signal received from the controller. - View Dependent Claims (16, 17)
-
-
18. A wireless device comprising:
-
a first antenna configured to receive a first radio-frequency (RF) signal, the first antenna being a high-band antenna; a second antenna configured to receive a second RF signal, the second antenna being a low-band antenna configured to receive signals transmitted at lower frequency bands than the first antenna; a first front-end module (FEM) in communication with the first antenna, the first FEM including a packaging substrate configured to receive a plurality of components, the first FEM further including a receiving system implemented on the packaging substrate, the receiving system including a first input multiplexer configured to receive the first RF signal, a second input multiplexer configured to receive the second RF signal, a controller configured to selectively activate one or more of a plurality of paths between an input of the first input multiplexer, an input of the second input multiplexer, and an output of an output multiplexer, the first input multiplexer and the second input multiplexer each including a splitter configured to direct signals along a single path and to direct signals simultaneously along two or more of the plurality of paths, the output multiplexer including a combiner configured to combine signals from two or more of the plurality of paths such that the output multiplexer is configured to combine signals received by the first input multiplexer and the second input multiplexer, a plurality of bandpass filters, each one of the plurality of bandpass filters disposed along a corresponding one of the plurality of paths and configured to filter a signal received at the bandpass filter to a respective frequency band, and a plurality of variable-gain amplifiers (VGAs), each one of the plurality of VGAs disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the VGA with a gain controlled by an amplifier control signal received from the controller; and a communications module configured to receive a processed version of the first RF signal from the output via a cable and generate data bits based on the processed version of the first RF signal. - View Dependent Claims (19, 20)
-
Specification