Bizarre Patents
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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| Number | Title | Issue Date |
| 8170522 | Multi-transformer architecture for an active RF circuit A circuit features a balun having an unbalanced input and a balanced output, and a differential coupler having a symmetrical structure about a center axis. The differential coupler has a differential input and a differential output, the differential input being coup... | 05/01/2012 |
| 7403764 | RF power delivery diagnostic system An RF power delivery diagnostic system is provided herein. The system comprises an RF power source (303), an impedance matching network (305), a plasma reactor (307) in electrical contact with the RF power source by way of the impedance matching... | 07/22/2008 |
| 7398054 | Spatially selective UHF near field microstrip coupler device and RFID systems using device A system having a UHF RFID transceiver is adapted to communicate exclusively with a single electro-magnetically coupled transponder located in a predetermined confined transponder operating region. The system includes a near field coupling device comprising a plural... | 07/08/2008 |
| 7395028 | Switching apparatus and satellite antenna switching apparatus A satellite antenna switching apparatus has LNB ports to which LNBs are connected, receiver ports to which receivers that exchange signals with the LNBs are connected, cascade ports to which another switching apparatus is cascade-connected, and impedance circuits th... | 07/01/2008 |
| 7363020 | Diode mixer A diode mixer comprises a mixer diode section which has a first circuit including an inductor and a capacitor connected in series and a diode connected in parallel with the first circuit and which includes a first connecting portion to which one end of the first cir... | 04/22/2008 |
| 7340233 | Integrated circuit and methods for third sub harmonic up conversion and down conversion of signals An integrated circuit may include a receiver and/or a transmitter that performs third order sub-harmonic conversion. The integrated circuit may include a Gilbert cell active mixer with three or more serially-connected transistors in each of the mixer's four branches... | 03/04/2008 |
| 7324796 | Low temperature co-fired ceramic sub-harmonic mixer A sub harmonic mixer has improved electrical performance in a small package size. The mixer has a low temperature co-fired ceramic substrate. Coupled lines are located within the substrate and connected to an LO port, an RF port and an intermediate frequency port. T... | 01/29/2008 |
| 7305217 | Low cost planar double balanced mixer A double balanced mixer includes a local oscillator balun, a radio frequency balun and four diodes. The local oscillator balun has a transmission line, a half wavelength transmission line and a quarter wavelength transmission line mounted on a printed circuit board.... | 12/04/2007 |
| 7302249 | High dynamic range mixer apparatus and balun therefor A wide dynamic range mixer which has a high linearity passive balun fabricated on a Si substrate for receiving an input RF signal and an active balun for receiving a local oscillator signal. The active balun includes high frequency, low voltage SiGe transistors to a... | 11/27/2007 |
| 7292837 | Mixer and converter using same A mixer, which is a single balanced mixer, includes an LO port for inputting an LO signal, an RF port for inputting an RF signal, an IF port for outputting an IF signal, a balun for converting an unbalanced signal into a balanced signal, and a pair of mixer diodes c... | 11/06/2007 |
| 7221311 | Radar A radar includes a transmitter circuit, a receiver circuit, an antenna and a circulator. The receiver circuit includes a low-noise amplifier which amplifies a received signal fed from the antenna through the circulator. A local oscillator provided in the receiver ci... | 05/22/2007 |
| 7218187 | Bow tie coupler A wide bandwidth coupler has two outer elements around a center element. The outer elements are rectangular at their outside portions and each have a tapered nose portion next to the center element. A matching network electrically connects the two outer elements and... | 05/15/2007 |
| 7218904 | Removing close-in interferers through a feedback loop System and method for elimination of close-in interferers through feedback. A preferred embodiment comprises an interferer predictor (for example, interferer predictor 840) coupled to a digital output of a direct RF radio receiver (for example, radio receiver... | 05/15/2007 |
| 7190939 | Time division IQ channel direct conversion receiver and method therefor A direct conversion receiver includes a local oscillator for generating a sinusoid, a mixer for receiving an incoming signal and for mixing the incoming signal with the sinusoid, an analog-to-digital converter for converting the mixed analog signal into a digital si... | 03/13/2007 |
| 7184724 | System and method for frequency translation using an image reject mixer Frequency translation, such as frequency up conversion of a video baseband or intermediate frequency to a desired frequency division broadcast channel, is provided utilizing a single sideband or image reject mixer and filtering having relaxed selectivity requirement... | 02/27/2007 |
| 7177620 | Mixer constant linear range biasing apparatus and method A Gilbert cell mixer for a wireless transceiver includes a first stage that performs voltage to current conversions and that includes first and second transistors that are operated in a saturation region and third and fourth transistors that are operated in a triode... | 02/13/2007 |
| 7167698 | Balanced sub-harmonic mixer A wide band mixer is provided that mitigates local oscillator leakage. A LO signal is provided to a 180 degree splitter that provides a first intermediate LO signal and a second intermediate LO signal 180° out of phase from one another. Since both the first and sec... | 01/23/2007 |
| 7164902 | Filter-integrated even-harmonic mixer and hi-frequency radio communication device using the same Configuration of a connection between an even-harmonic mixer and a filter is simplified, thereby enabling size reduction. An even-harmonic mixer and a high-frequency bandpass filter are connected to each other via a transmission line, thereby forming a filter-integr... | 01/16/2007 |
| 7164897 | Method and apparatus for conversion of radio frequency (RF) signals using aperiodic mixing signals An inexpensive, high-performance, fully-integrable, multi-standard transceiver with a topology including: an active mixer, followed by a high pass filter, and a passive mixer. The input signal is modulated up, or demodulated down, using a pair of complementary, aper... | 01/16/2007 |
| 7106024 | Filter with increased first harmonic response and reduced phase shift in a wide frequency band for encoderless drive applications A method and apparatus for use with a controller that supplies voltages to an induction machine via supply lines, the voltages including a fundamental voltage component and an injected voltage component, the line voltages also including harmonic voltage components w... | 09/12/2006 |
| 7095998 | Mixer and converter using same A mixer, which is a single balanced mixer, includes an LO port for inputting an LO signal, an RF port for inputting an RF signal, an IF port for outputting an IF signal, a balun for converting an unbalanced signal into a balanced signal, and a pair of mixer diodes c... | 08/22/2006 |
| 7095989 | Frequency translating devices and frequency translating measurement systems with DC bias added to a mixer diode A frequency translating device (FTD) includes at least one mixer diode connected to down-convert a radio frequency (RF) to an intermediate frequency (IF) and to up-convert an IF to an RF and a source of direct current (DC) bias that is connected to the mixer diode. ... | 08/22/2006 |
| 7020452 | Actively matched center-tapped marchand balanced mixer An apparatus comprising an amplifier circuit, a tuning circuit and a mixer circuit. The amplifier circuit may be configured to generate an output signal at a first node in response to an input signal received through a second node. A tuning circuit may be (i) couple... | 03/28/2006 |
| 7020450 | Active inductors using bipolar silicon transistors An active inductor includes bipolar transistors T1, T2, T3 and TD (TD being arranged in diode), where T1's emitter is connected to an output port and to T2's collector. T2's base is connected to a first voltage line and betw... | 03/28/2006 |
| 7013122 | Ultra high isolation mixer A double balanced mixer for mixing an RF input signal with a local oscillator signal to provide at an output an intermediate frequency signal with high isolation over a wide frequency range. The mixer includes a local oscillator balun that is operable to receive a l... | 03/14/2006 |
| 6999746 | Image rejection mixer An image rejection mixer of reduced power dissipation includes a signal distributor supplied with local signals having a phase difference to distribute the local signals, a first and a second signal mixer for mixing the distributed local signals and RF signals havin... | 02/14/2006 |
| 6993312 | Double balanced diode mixer with high output third order intercept point A double balanced mixer consisting of an RF balun, a local oscillator balun and a diode “quad” bridge circuit connected between the two baluns and where the IF output is taken at the center tap of the RF balun secondary transformer. A second harmonic termination... | 01/31/2006 |
| 6975608 | Method for performing handoff between asynchronous base station and synchronous base station A method for performing a handoff between an asynchronous base station and a synchronous base station. The method includes the steps of: a) setting at least one common channel between the synchronous base station and a mobile station; b) determining whether there is... | 12/13/2005 |
| 6970709 | Method for dynamic allocation of wireless base station DSP resources A method for dynamically allocating signal processing resources in a wireless multichannel broadband base station (BBS) for a cellular communications network including determining a number of available channel processor (CP) resources which are unused in a BBS. In r... | 11/29/2005 |
| 6957055 | Double balanced FET mixer with high IP3 and IF response down to DC levels A double balanced FET mixer that has a high third order intercept point and an intermediate frequency response that goes to direct current levels. The mixer includes a local oscillator terminal, a RF terminal and an intermediate frequency terminal. The mixer has a p... | 10/18/2005 |
| 6947717 | High isolation mixer A mixer with improved isolation between the RF and local oscillator frequency signals. The mixer has a substrate. A pair of cores are mounted to the substrate. Windings are wound on the cores to from a pair of baluns. A diode ring is connected between the baluns. Th... | 09/20/2005 |
| 6947720 | Low noise mixer circuit with improved gain A mixer circuit of the present invention includes a gain stage configured to receive a first signal and a modulated bias current, and in accordance therewith, produce an output signal, the gain stage generating a first current and receiving the modulated bias curren... | 09/20/2005 |
| 6931246 | Line coupling structure, mixer, and receiving/transmitting apparatus comprised of suspended line and dielectric waveguide A line coupling structure for coupling a dielectric waveguide to a suspended line has the dielectric waveguide including dielectric strips and two conductor plates that are approximately parallel to each other, the dielectric strips and a circuit board being sandwic... | 08/16/2005 |
| 6922556 | System and method for establishing a bias current using a feedback loop A circuit for establishing a bias current includes a mixer, an amplifier, a bias resistor, a comparator, and a drive circuit. The mixer receives a drive voltage and at least a portion of a bias current. The amplifier is coupled to the mixer and receives at least a p... | 07/26/2005 |
| 6879192 | Even harmonic mixer with high-input, third-order intercept point A surface mount, even harmonic mixer is preferably used in point-to-multipoint millimeter wave transceivers. The mixer includes an anti-parallel series arrangement of diodes in one or more ring quads to increase the input 1 dB compression point and third-order input... | 04/12/2005 |
| 6810241 | Microwave diode mixer A mixer having a diode quad, and which receives two RF signals at an RF input balun having primary and secondary windings. A resonant circuit arrangement includes at least a capacitor circuit element in parallel with the secondary winding to form an open circuit ter... | 10/26/2004 |
| 6785530 | Even-order non-linearity correction feedback for Gilbert style mixers Double balanced mixers having transistor pairs are affected by area mismatches between the transistors. The area mismatches can be represented as a ratio between the mixer core transistors that is directly related to voltage. Thus, an input voltage into one of the m... | 08/31/2004 |
| 6748204 | Mixer noise reduction technique In accordance with the present invention a mixer circuit noise reduction technique is provided. The mixer circuit of the present invention includes a gain stage for receiving a first signal and producing an output signal. The mixer circuit also includes a bias circu... | 06/08/2004 |
| 6675005 | Printed single balanced downconverter mixer A single balanced downconverter includes an insulated substrate with a primary circuit and a secondary circuit, each consisting of an open annular foil element, located on opposite sides of the substrate in juxtaposition with each other and having mutual ... | 01/06/2004 |
| 6633194 | Mixer A mixer includes a first terminal and a second terminal forming a first input port for receiving a first signal having a first frequency; a second input port for receiving a second signal having a second frequency; a mixer output port for a resulting sign... | 10/14/2003 |
