US 7,495,886 B2
Dampening of electric field-induced resonance in parallel plate capacitors
Albert Humirang Cardona, Santa Barbara, Calif. (US)
Assigned to Agile RF, Inc., Goleta, Calif. (US)
Filed on Jul. 24, 2006, as Appl. No. 11/492,563.
Claims priority of provisional application 60/703168, filed on Jul. 27, 2005.
Prior Publication US 2007/0025058 A1, Feb. 01, 2007
Int. Cl. H01G 4/06 (2006.01); H01G 4/008 (2006.01)
U.S. Cl. 361—311  [361/305] 4 Claims
OG exemplary drawing
 
1. A capacitor for use with RF signals at an operating frequency of a device in which the capacitor is used, the capacitor comprising:
a parallel plate configuration including a bottom electrode, a top electrode, and dielectric disposed between the bottom electrode and the top electrode and exhibiting a standing wave resonance frequency at the operating frequency, the parallel plate configuration capable of receiving a DC voltage bias that affects a capacitance value of the parallel plate configuration; and
at least an additional mass layer physically connected to the parallel plate configuration, a density and a thickness of said additional mass layer being selected to dampen a magnitude of a resonance of the parallel plate configuration at the standing wave resonance frequency and shift the standing wave resonance frequency away from the operating frequency of the device in which the capacitor is used.