System and method for wireless communication using low-pulling digital interface signals
AssigneeSilicon Laboratories Inc.
InventorDonald Kerth
Life of this patent
Estimating the term…
Abstract
The digital interface between the baseband section and the RF transceiver section of a wireless communication device may cause undesired pulling to an impedance sensitive portion of the RF transceiver section. In one embodiment, an original interface signal that exhibits a duty cycle is modified by an interface control block in the baseband section. The resultant modified interface signal exhibits a duty cycle less than the duty cycle of the original interface signal. In this manner, when the modified interface signal is applied to the RF transceiver section, less pulling of the impedance sensitive portion occurs than if the original interface signal were applied directly to the RF transceiver section.
Claims43
A method of operating a wireless communication device including a baseband IC and a radio frequency (RF) IC comprising:
- coupling, by a digital interface, the baseband IC to the RF IC;
- and
- sending, by the baseband IC, a low duty cycle signal across the digital interface to the RF IC, such that low pulling of an impedance sensitive portion of the RF IC is achieved.
A method of operating a wireless communication device including a baseband IC and a radio frequency (RF) IC comprising:
- coupling, by a digital interface, the RF IC to the baseband IC;
- and
- sending, by the RF IC, a low duty cycle signal across the digital interface to the baseband IC, such that low pulling of an impedance sensitive portion of the RF IC is achieved.
A wireless communication device comprising:
- a baseband section;
- a radio frequency (RF) section including an impedance sensitive portion;
- and
- a digital interface that couples the baseband section to the RF section;
- wherein the baseband section sends a low duty cycle signal across the digital interface to the RF section such that low pulling of the impedance sensitive portion in the RF section is achieved.
A wireless communication device comprising:
- a baseband section;
- a radio frequency (RF) section including an impedance sensitive portion;
- and
- a digital interface that couples the baseband section to the RF section;
- wherein the RF section sends a low duty cycle signal across the digital interface to the baseband section such that low pulling of the impedance sensitive portion in the RF section is achieved.
A wireless communication device comprising:
- a baseband integrated circuit (IC);
- a radio frequency (RF) IC including impedance sensitive RF circuitry;
- a digital interface, external to the baseband IC and the RF IC, that couples the baseband IC to the RF IC;
- wherein the baseband section sends a low duty cycle signal across the digital interface to the RF IC such that low pulling of the impedance sensitive RF circuitry is achieved.
A method of operating a wireless communication device including a baseband IC and a radio frequency (RF) IC comprising:
- coupling, by a digital interface, the baseband IC to the RF IC;
- and
- sending, by the baseband IC, an interface signal across the digital interface to the RF IC, the interface signal exhibiting a switched state that is sufficiently short in time that significant pulling of an impedance sensitive portion of the RF IC is avoided.
Dependencies are inferred from the claim text.