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Patent No. 6637829

Decorative Jeweled Wheel Cover

An improved wheel is provided wherein decorative items such as gem stones are embedded in either the wheel surface, a special mounting section attached to the wheel surface, or to a spoke strap that wraps around each spoke and positions embedded gem stones on the outside surface of the spoke.

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Class 331/107T - Tunnel diode oscillators


Subclass of Class 331 - Oscillators
No. of patents: 23
Last issue date: 02/28/2012


NumberTitleIssue Date
8125281Resonator
To provide a resonator that includes a resonant tunneling diode that can generate an electromagnetic wave. In the resonator, the resonant tunneling diode and a resistor layer are sandwiched between first and second conductors in a direction approximately perpendicul...
02/28/2012
7952441Electromagnetic-wave oscillator
An electromagnetic-wave oscillator includes a substrate, an EMW oscillating unit including a gain portion, an EMW resonance portion, an EMW radiating portion, and a ground (GND) portion, and a supplying unit for supplying electric power to the EMW oscillating unit. ...
05/31/2011
7924107Resonant tunneling structure
A resonant tunneling structure for generating oscillation with multiple fundamental oscillation frequencies is provided. A first quantum well layer has a second sub-band (E2). A second quantum well layer has a first sub-band (E1) and a third su...
04/12/2011
7907024Resonant tunneling diode oscillation device and inspection apparatus
An oscillation device has a resonant tunneling diode formed by interposing a gain medium including a first barrier layer, a quantum well layer and a second barrier layer between a first thickness adjusting layer and a second thickness adjusting layer. The oscillatio...
03/15/2011
7898348Terahertz oscillation device
A terahertz oscillation device includes a first electrode placed on the semiconductor substrate; a second electrode placed via the insulating layer toward the first electrode, and opposes the first electrode to be placed on the semiconductor substrate; a MIM reflect...
03/01/2011
7889015Oscillation device
To provide an oscillation device having a long oscillation wavelength in which wavelength variable width is relatively broad and wavelength sweep rate is relatively high. An oscillation device includes a gain medium having a gain with respect to an electromagnetic w...
02/15/2011
7839226Method and apparatus for effecting stable operation of resonant tunneling diodes
A circuit includes a resonant tunneling device having first and second terminals, and biased to exhibit a negative resistance between the terminals, the terminals being coupled at spaced locations to a further section made of a material which has a plasma resonance ...
11/23/2010
7622999Electromagnetic-wave oscillator
An electromagnetic-wave oscillator includes a substrate, an EMW oscillating unit including a gain portion, an EMW resonance portion, an EMW radiating portion, and a ground (GND) portion, and a supplying unit for supplying electric power to the EMW oscillating unit. ...
11/24/2009
7573343RTD-HBT differential oscillator topology
The new RTD-HBT differential oscillator circuit topology is proposed. At the nodes of the inductors and varactors in the conventional differential oscillator topology, each the RTD is attached to increase the magnitude of the negative conductance, which results in p...
08/11/2009
7567138Single-electron injection/extraction device for a resonant tank circuit and method of operation thereof
A system for reducing phase-noise in a resonant tank circuit. The system includes a single-electron device configured to inject a single electron into the oscillator circuit tank circuit. The system further includes a synchronizer coupled to the single-electron devi...
07/28/2009
7071811High performance voltage control diffusion resistor
The present invention provides a diffusion resistor that is formed in the substrate. A diffusion region is formed within the substrate that contains a first and second contact region. These contact regions extend downward from the surface of the substrate. A third c...
07/04/2006
6993315Super-regenerative microwave detector
A resonant tunneling diode or diode array oscillator (10) including a resonant diode (11) is coupled to a millimeter-wave source (14) and a quench generator (16) for periodically quenching the oscillations so that the average oscillation ...
01/31/2006
6909336Discrete-time amplitude control of voltage-controlled oscillator
Periodically, sensed amplitude for the output signal of a voltage-controlled oscillator is compared to a reference and biasing of the voltage-controlled oscillator is correspondingly set, thereby controlling amplitude of the voltage-controlled oscillator output sign...
06/21/2005
6724269PSK transmitter and correlator receiver for UWB communications system
A circuit to generate antipodal PSK signal and a correlator circuit for recovering information from PSK (phase shift keying) UWB transmissions includes providing a circuit component characterized by a transfer function having alternating stable and unstable regions....
04/20/2004
6359520Optically powered resonant tunneling device
An improved resonant tunneling device (RTD) oscillator is provided by supplying electrical power to the RTD device 23 using a photocell 21 and a light source 25 such that essentially no spurious resonances are possible....
03/19/2002
6323737System and method for generating a multi-phase signal with a ring oscillator
An oscillator is provided that includes a plurality of bridges and a plurality of transmission lines. Each bridge includes a plurality of negative differential resistance devices. Each transmission line interconnects two adjacent bridges. A clock circuit ...
11/27/2001
6133798Oscillation system
In plural oscillation systems each of which can be described by the van der Pol equation, each oscillation system is reciprocally connected with at least one oscillation system other than the own oscillation system by a coupling factor to realize automati...
10/17/2000
5883549Bipolar junction transistor (BJT)--resonant tunneling diode (RTD) oscillator circuit and method
A BJT, an inductor, and an RTD are configured to define a negative resistance oscillator circuit that is suitable for monolithic integration. The BJT is forward biased so that the RTD operates at a DC operating point (IQ,VQ) on its c...
03/16/1999
5675295Microwave oscillator, an antenna therefor and methods of manufacture
A millimeter or microwave oscillator device for a receiver or a transmitter is described. The oscillator device including a high frequency oscillating circuit including an active device 41; said active device 41 having a first and a second contact 56, 52,...
10/07/1997
5339053Instant-on microwave oscillators using resonant tunneling diode
A microwave oscillator capable of being switched into or out of the oscillating state within a fraction of the period of oscillation. The instant-on microwave oscillator permits both the generation and modulation of a microwave signal by using a single ac...
08/16/1994
5315272Light emitting tunnel diode oscillator
A light emitting tunnel diode oscillator comprising a body of single crystalline material having a first portion n-doped and a second portion p-doped in such a way that the resulting p-n junction has the low voltage conductance characteristics of a tunnel...
05/24/1994
5144261Optically injection locked resonant tunnel diode oscillator
An optically injection locked resonant tunnel diode oscillator assembly hng a resonant tunnel diode (RTD) which, when voltage biased, oscillates at a free running frequency; an optical signal delivery system, such as a light intensity modulator connected...
09/01/1992
4745374Extremely-high frequency semiconductor oscillator using transit time negative resistance diode
An extremely-high frequency semiconductor oscillator which produces a large but substantially noise-free output power with minimized fluctuation of output power for changes in device temperature is realized by using, as its power producing component, a se...
05/17/1988
 
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