US Patent No: 5,963,857

Number of patents in Portfolio can not be more than 2000

Article comprising a micro-machined filter

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Abstract

An article comprising a micro-machined filter advantageously comprises a micro-machined resonator, a drive circuit and a detection circuit, at least a portion of which are circuits are disposed on the resonator within a magnetic field. In operation, an input signal is delivered to the drive circuit. The resonator is excited to movement by the Lorentz force that is generated as signal current varies. Due to the resonator's movement, a voltage is induced in the detection circuit, which moves with the resonator. Using well-known micro-machining techniques, a resonator can be made that has mechanical resonance frequencies extending into the GHz regime. Under proper conditions, such resonances advantageously exhibit very high Q-values, so that the resonator shows a significant physical response (e.g., movement) over a very narrow range of excitation frequency. When the frequency of the input signal matches such a frequency (i.e., the resonant frequency), the device generates a voltage having such a frequency.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
LUCENT TECHNOLOGIES INC.MURRAY HILL, NJ9557

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Greywall, Dennis S Whitehouse Station, NJ 57 644

Cited Art

Patent Info (Count) # Cites Year
 
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5,793,268 Multi-octave tunable permanent magnet ferrite resonator 3 1997
 
RAYTHEON COMPANY (1)
4,853,660 Integratable microwave devices based on ferromagnetic films disposed on dielectric substrates 30 1988
 
UNISIA JECS CORPORATION (1)
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VISTEON GLOBAL TECHNOLOGIES, INC. (1)
5,222,255 Intermodulation controller for radio receiver 22 1991
 
YOKOGAWA ELECTRIC CORPORATION (1)
4,926,143 Oscillator using H-shaped single crystal silicon vibrator 16 1988

Patent Citation Ranking

Forward Cites

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