Cost effective multiband RF front-end architecture for mobile applications

摘要

One embodiment of the present invention provides an RF front-end system. The RF front-end system includes one or more RF front-end components and a programmable logic device, which has a baseband interface for coupling to a baseband digital signal processor (DSP), and a set of component interfaces for coupling to the one ore more RF front-end components. The programmable logic device is configured to: receive, from the baseband DSP via the baseband interface, a command which includes an address and a control signal; identify a component interface from the set of component interfaces based on the address; and send the control signal to the identified component interface, thereby enabling the baseband DSP to control a front-end component coupled to the programmable logic device via the identified component interface.

主权项

1. An RF front-end system, comprising:
one or more RF front-end components; a programmable logic device having a baseband interface for coupling to a baseband digital signal processor (DSP), and a set of component interfaces for coupling to the one or more RF front-end components; and an RF IC chip situated between the baseband DSP and the programmable logic device; wherein the programmable logic device is configured to:
receive, from the baseband DSP via the baseband interface, a command, wherein the command includes an address and a control signal;map the address included in the received command to a component interface from the set of component interfaces; andsend the control signal to the mapped component interface, thereby enabling the baseband DSP to control a front-end component coupled to the programmable logic device via the mapped component interface; and wherein the RF IC chip is configured to:
receive, from the baseband DSP, a second command;determine whether a second address included in the second command is within a predetermined range; andin response to determining the second address being outside of the predetermined range, forward the second command to the programmable logic device.