Initialization of configurable receiver front end module into a selected mode
AssigneeSilicon Laboratories Inc.
InventorsHendricus De Ruijter, Thomas Edward Voor, Jeffrey L. Sonntag
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Abstract
In one aspect, a method comprises: initializing a front end circuit of a wireless device into a first mode in which a radio frequency (RF) signal processing path comprises a low noise amplifier (LNA) having an output coupled to an RF filter; and in response to an RF signal received in the front end circuit having a level greater than a first threshold, reconfiguring the front end circuit into a second mode in which the RF filter is coupled to an input of the LNA.
Claims20
A non-transitory storage medium comprising instructions that, when executed, cause a device to perform a method comprising:
- initializing a front end circuit of a wireless device into a first mode in which a radio frequency (RF) signal processing path comprises a low noise amplifier (LNA) having an output coupled to an RF filter;
- and
- in response to an RF signal received in the front end circuit having a level greater than a first threshold, reconfiguring the front end circuit into a second mode in which the RF filter is coupled to an input of the LNA.
A method comprising:
- sending, from a controller of a wireless device to a front end circuit of the wireless device, a control signal having a first value to cause the front end circuit to be initialized into a first mode in which a radio frequency (RF) signal processing path has a first relative order of a low noise amplifier (LNA) and an RF filter;
- monitoring signal metric information of a receive RF signal received in the front end circuit;
- and
- based at least in part on the signal metric information, reconfiguring the front end circuit from the first mode into a second mode in which the RF signal processing path has a second relative order of the LNA and the RF filter, the second relative order different than the first relative order.
A wireless device comprising:
- an antenna;
- a first integrated circuit coupled to the antenna, the first integrated circuit comprising a radio frequency (RF) front end module, the RF front end module comprising:
- a transmit path to receive, process and output a transmit RF signal, the transmit path comprising a power amplifier;
- a receive path to receive, process and output a receive RF signal, the receive path comprising a low noise amplifier (LNA);
- switching circuitry coupled to the transmit path and the receive path;
- and
- a control circuit coupled to the switching circuitry, the control circuit to control the switching circuitry to configure the receive path for operation in one of a plurality of modes;
- a filter coupled to the first integrated circuit;
- and
- a second integrated circuit coupled to the first integrated circuit, the second integrated circuit comprising a controller to execute:
- one or more first instructions to initialize the first integrated circuit into a first mode having a first relative order of the receive path in which the LNA is coupled to the antenna;
- and
- one or more second instructions to reconfigure the first integrated circuit into a second mode having a second relative order of the receive path in which the filter is coupled to the antenna.
Dependencies are inferred from the claim text.