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US 9,312,927 B2Granted
Tunable guard ring for improved circuit isolation
AssigneeQUALCOMM Incorporated
InventorsMaulin Pareshbhai Bhagat, Thomas Andrew Myers, Lan Nan, Zhang Jin
Life of this patent
Estimating the term…
Abstract
A tunable guard ring for improved circuit isolation is disclosed. In an exemplary embodiment, an apparatus includes a closed loop guard ring formed on an integrated circuit and magnetically coupled by a selected coupling factor to a first inductor formed on the integrated circuit. The apparatus also includes a tunable capacitor forming a portion of the closed loop guard ring and configured to reduce magnetic field coupling from the first inductor to a second inductor.
Claims20
An apparatus comprising:
- a closed loop guard ring formed on an integrated circuit and magnetically coupled by a selected coupling factor to a first inductor formed on the integrated circuit;
- and
- a tunable capacitor forming a portion of the closed loop guard ring and configured to reduce magnetic field coupling from the first inductor to a second inductor.
An apparatus comprising:
- means for magnetically coupling a closed loop guard ring to a first inductance by a selected coupling factor, the closed loop guard ring and the first inductance formed on an integrated circuit;
- and
- means for providing a tunable capacitance forming a portion of the closed loop guard ring and configured to reduce magnetic field coupling from the first inductance to a second inductance.
Dependencies are inferred from the claim text.