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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 8067974 | Signal transformation arrangement and method for signal transformation A signal transformation arrangement comprises a first input tap (1) to receive a first input signal (IN_P), a first output terminal (3) to provide a first output signal (OUT_P) and a first coupling circuit (10) which couples the first input tap ... | 11/29/2011 |
| 7915943 | Mixer circuit Regarding N-channel first transistor and a P-channel second transistor, their first terminals are connected to each other and their second terminals are connected to each other. Regarding third transistor and a fourth transistor, their first terminals are also conne... | 03/29/2011 |
| 7911257 | MOSFET parametric amplifier A circuit includes an input terminal adapted to receive an input voltage, a MOSFET having its drain terminal and its source terminal connected together, a first switching arrangement configured to be controlled by a first clock signal and adapted to selectively coup... | 03/22/2011 |
| 7839199 | Circuit and method for implementing frequency tripled I/Q signals A circuit and a method for implementing frequency tripled I/Q signals are proposed, including receiving two input I/Q signals through frequency multipliers so as to generate two frequency multiplied signals and mixing the input I/Q signals and the corresponding freq... | 11/23/2010 |
| 7570099 | Conversion mixer with high impedance circuit A conversion mixer includes a mixing circuit, a duplicating circuit and a loading circuit. The mixing circuit receives a couple of first input signals and a couple of second input signals and mixes the couple of first input signals with the couple of second input si... | 08/04/2009 |
| 7554380 | System for reducing second order intermodulation products from differential circuits A passive CMOS differential mixer circuit with a mismatch correction circuit for balancing the electrical characteristics of the two output paths. Once the output paths of the differential circuit are balanced, or matched as closely as possible, second order intermo... | 06/30/2009 |
| 7538596 | Low distortion quadrature mixer and method therefor A mixer (114) includes an input amplifier (620) and a barrel shifter (640). The input amplifier (620) has an input for receiving an input signal, and first through fourth output terminals respectively providing first through fourth curren... | 05/26/2009 |
| 7471134 | Mixer with clock resynchronization and method therefor A mixer (114) includes a phase clock generator (404), a latch (420), and a multiplier (118). The phase clock generator (404) provides a plurality of phase clock signals. The latch (420) is coupled to the phase clock generato... | 12/30/2008 |
| 7449934 | CMOS mixer for use in direct conversion receiver Provided is a mixer for use in a direct conversion receiver. The mixer includes Field Effect Transistors (FETs), a current source (IBias), two load resistors (RLoad), another FET, and two inductors L1 and L2. The FET M21 constitutes a current bl... | 11/11/2008 |
| 7386292 | Apparatus, system, and method for down-converting and up-converting electromagnetic signals Methods, systems, and apparatuses, for down-converting and up-converting an electromagnetic signal. In embodiments the invention operates by receiving an EM signal and recursively operating on approximate half cycles of the carrier signal. The recursive operations c... | 06/10/2008 |
| 7375577 | Mixer capable of detecting or controlling common mode voltage thereof A mixer capable of detecting or controlling a common mode voltage thereof, includes at least: a mixing module for mixing a first set of differential signals and a second set of differential signals to generate at least one mixed signal; and a compensation module for... | 05/20/2008 |
| 7355466 | Passive mixer with direct current bias Mixer circuits with direct-current bias are disclosed. An example embodiment of such a mixer includes a first differential transistor pair and a second differential transistor pair. The example mixer also includes first and second local oscillator signal terminals a... | 04/08/2008 |
| 7342431 | Low power wide dynamic range RMS-to-DC converter An RMS to DC converter squares an a-c input signal to obtain a squared direct current voltage signal. The squared direct current voltage signal is applied to successive stages, each stage amplifying its received signal and detecting the amplified level of the signal... | 03/11/2008 |
| 7327183 | Squaring cells and multipliers using summed exponentials A squaring cell combines first and second exponential currents to approximate square law behavior. The exponential currents can be generated by current stacks having pairs of series-connected junctions. The exponential currents can be altered to change the shape of ... | 02/05/2008 |
| 7323934 | Operational transconductance amplifier An operational transconductance amplifier (OTA) includes a first, a second and a third differential units, a voltage-to-current converting unit and a current subtraction device. The first and the second differential units receive a differential input voltage and the... | 01/29/2008 |
| 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 |
| 7321253 | Multiplier A conventional multiplier which uses a MOS transistor has a subject that, in order to compensate for a variation of a bias voltage or the like, it is necessary to add a complicated correcting circuit to an outputting section or the like, and the circuit scale become... | 01/22/2008 |
| 7321735 | Optical down-converter using universal frequency translation technology A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w... | 01/22/2008 |
| 7319851 | Mixer circuit, receiver comprising a mixer circuit, wireless communication comprising a receiver, method for generating an output signal by mixing an input signal with an oscillator signal The invention relates to a mixer circuit comprising an input node for receiving an input signal, a first output node 202, and a second output node 203, voltage to current conversion means and switching means operatively coupled to each other and to the... | 01/15/2008 |
| 7302011 | Quadrature frequency doubling system The frequency doubler of the present invention operates to provide an in-phase signal and a quadrature signal, each having a frequency equal to twice the frequency of a reference signal. The in-phase and quadrature signals are based on signals that are 0 degrees, 45... | 11/27/2007 |
| 7295826 | Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering... | 11/13/2007 |
| 7292835 | Wireless and wired cable modem applications of universal frequency translation technology Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil... | 11/06/2007 |
| 7283793 | Package filter and combiner network A transceiver front end circuit includes an antenna terminal capable of being coupled to an antenna. A first balun circuit has a single input that is coupled to the antenna terminal, and a pair of balanced outputs coupled to a corresponding pair of balanced receiver... | 10/16/2007 |
| 7274256 | Input amplifier stage in the AB class having a controlled bias current The invention relates to an input amplifier stage, in AB class, having a controlled bias current and comprising a differential cell, inserted between a first supply voltage reference and a second voltage reference, having a differential pair of input transistors rec... | 09/25/2007 |
| 7271640 | Mixer circuit with bypass and mixing modes having constant even order generation and method of operation A mixer circuit configured to operate in a bypass or mixing mode, and which comprises a mixer core, and a mode select circuit. The mixer core includes first and second switches, each of which has an input, and first and second outputs. The mode select circuit is cou... | 09/18/2007 |
| 7262628 | Digital calibration with lossless current sensing in a multiphase switched power converter Disclosed is a multi-phase power regulator that accurately senses current at a load in a lossless manner and adjusts the power supplied to the load based on the sensed current. Also disclosed is a method of calibrating a multiphase voltage regulator by applying a kn... | 08/28/2007 |
| 7254380 | Low flicker noise current-folded mixer The current-folded mixer of this invention comprises an input stage and a switching stage. The input stage receives a radio frequency input RF and generates a modulated bias current to the switching stage. The switching stage has a switching pair, connected to a com... | 08/07/2007 |
| 7253664 | Reference voltage driving circuit with a compensating circuit and a compensating method of the same A compensating circuit for calibrating reference voltage, which is coupled to an operation amplifier having an input end and an output end within a reference voltage driving circuit, is provided in the present invention. The compensating circuit comprises a first ca... | 08/07/2007 |
| 7245164 | Radio frequency doubler When a signal of a double frequency is generated from the original signal, conventionally a 90-degree phase-shift circuit is necessary to suppress an output of a DC component and efficiently obtain a double wave. According to the present invention, an equal RF signa... | 07/17/2007 |
| 7242236 | Mixer circuit with phase-shifted radio frequency signal A mixer includes two transistor circuits, two control inputs, two RF inputs and two IF outputs, wherein, for switch-support, there are provided positive feedback elements and impedance elements, by which intermodulation strength, stability and noise performance of t... | 07/10/2007 |
| 7236761 | Balanced circuit arrangement and method for linearizing such an arrangement The present invention relates to a balanced circuit arrangement and methods for linearizing and calibrating such a circuit arrangement, wherein linearization is obtained by introducing a load imbalance between the output branches of the balanced circuit arrangement.... | 06/26/2007 |
| 7231325 | System for evaluating a sensor signal The inventive device for evaluating the sensor signal includes the provider for providing the sensor signal, the processor for processing the sensor signal and for providing an information signal comprising information regarding the amplitude course of the sensor si... | 06/12/2007 |
| 7227412 | Attenuation cell with an attenuation factor control device Attenuation cell comprising first and second differential pairs of bipolar transistors. A gain control device applies a voltage VA−VB between the bases of both differential pairs and comprises a set of three diodes in which a current IA, a current IB and the sum I... | 06/05/2007 |
| 7227911 | Multichannel receiver for simultaneously receiving a plurality of different channel signals A multichannel receiver for effectively receiving multichannel signals at the same time without any restrictions in the symbol timing and channel interval of modulated signals. A quadrature detector of the multichannel receiver includes first and second multipliers.... | 06/05/2007 |
| 7215196 | Variable impedance circuit, variable gain differential amplifier, multiplier, high-frequency circuit and differential distributed amplifier The collectors of transistors are connected via respective resistances to a power supply terminal receiving a power supply voltage. The emitters of the transistors are connected to a ground terminal via respective resistances. A shunt resistance, a FET, and a shunt ... | 05/08/2007 |
| 7215940 | Integrated circuit Embodiments of the present invention relates to an integrated mixer. A problem with producing low power consumption mixers is that they require a relatively high operating voltage due to the number of layers of transistor between the power rails. Accordingly, an emb... | 05/08/2007 |
| 7199603 | Increment/decrement, chip select and selectable write to non-volatile memory using a two signal control protocol for an integrated circuit device An integrated circuit having a device with an adjustable parameter utilizes a two signal control protocol to select the device, perform an up/down or increment/decrement of the parameter value with or without saving the parameter value in a non-volatile memory of th... | 04/03/2007 |
| 7196563 | Comparator and AD conversion circuit having hysteresis circuit A comparator is provided, which compares an input voltage and a reference voltage by using a plurality of inverting circuits connected in series. The comparator includes a first inverting circuit, a second inverting circuit, a feedback path, and a capacitor arranged... | 03/27/2007 |
| 7187206 | Power savings in serial link transmitters Aspects of saving power in a serial link transmitter are described. The aspects include providing a parallel arrangement of segments, each segment comprising prebuffer and output stage circuitry of the serial link transmitter and each segment enabled independently t... | 03/06/2007 |
| 7183833 | Three-phase mixer-systems Mixer-systems for up/down-converting frequencies comprise many components: in case of balanced quadrature conversion, some parts will show a fourfold repetition (insight). By creating a three-phase mixer-system (10,40), less components will be necessary (basi... | 02/27/2007 |
