Reduced clock feed-through systems, methods and apparatus

Abstract

Implementations of radio frequency switch controllers within the scope of the appended claims are configured to reduce the impact of the clock signal induced spurs. In particular, implementations of switch controllers described herein include a poly-phase clocking scheme, as opposed to a single phase to clock the charge pump stages of an negative voltage generator. In some implementations poly-phase clocking schemes reduce the clock signal induced spurs and may preclude the need for additional on-chip or off-chip decoupling capacitors that add to the cost and physical size of a complete front end module solution.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority under 35 U.S.C. §119(e) of U.S. Provisional Application No. 61 / 529,191, filed August 30, 2011, which is hereby incorporated by reference in its entirety. technical field [0003] Aspects of the invention relate to electronic devices, and in particular, to systems, methods, and apparatus configured to reduce clock feed-through in switches. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, data, and multimedia applications and services. These systems are typically configured to support communication with multiple users by sharing available system resources, such as designated portions of the spectrum. The proliferation of high data rate wireless services is increasing the need to access the available spectrum. The ability to meet this demand is often limited by the lack of avai...

AI Technical Summary

Problems solved by technology

However, there are drawbacks to using these traditional solutions for glitch reduction

Off-chip decoupling capacitors add component count, cost and complexity to the device

They also take up valuable substrate space and thus limit the form factor of wireless devices

Large on-chip filter networks take up valuable chip space and increase both electrical noise and temperature of the chip during operation

Therefore, there is a challenge to reduce the impact of clock glitches caused by switch controllers used to enable switching between multiple frequency bands

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