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7622981 |
Square cell having wide dynamic range and power detector implementing same
A square cell comprises first and second bipolar transistors each having an emitter, collector and base, the bases of the transistors being connected for receiving an input voltage, and first and...
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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...
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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...
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7538719 |
Mixer circuit and radar transceiver
A mixer circuit includes: a rat race circuit including a ring-shaped transmission line with a first terminal, a second terminal, a third terminal, and a fourth terminal, the first to fourth...
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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...
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7512394 |
Wideband up-conversion mixer
An up-conversion mixer includes a first and a second hybrid couplers and a first and a second traveling-wave mixers is disclosed. The first hybrid coupler receives an input intermediate frequency...
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7509112 |
Wideband image rejection mixer
An image rejection mixer including a first and a second hybrid couplers and a first and a second traveling-wave mixers is disclosed. The first hybrid coupler divides an input radio frequency (RF)...
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7496342 |
Down-converting electromagnetic signals, including controlled discharge of capacitors
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...
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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 )...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7180798 |
Semiconductor physical quantity sensing device
A semiconductor physical quantity sensing device to perform electrical trimming at low cost by using a CMOS manufacturing process and a small number of terminals. The semiconductor physical...
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7088356 |
Power source circuit
A power source circuit includes a power source wiring at a high potential side provided with a first power source voltage and a second power source voltage, a power source wiring at a low potential...
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7084693 |
Sub-harmonic mixer
A sub-harmonic mixer comprises two field effect transistors (FETs) in which the drains are coupled together. The mixer includes a signal generator for generating two local oscillator signals in...
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7057440 |
Multiplier-divider circuit for a PFC controller
The present invention introduces an integrated analog multiplier-divider circuit. The multiplier-divider block according to the present invention is ideal for use in the power factor correction...
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7046064 |
Clock generation with continuous phase
A clock generation system includes an oscillator and one or more clock generators. The oscillator provides inphase and quadrature oscillator signals having a fixed frequency. Each clock generator...
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7042272 |
Transconductance amplifier with substantially constant resistance and mixer using same
A transconductance amplifier ( 620 ) includes four transistors each operating in saturation and strong inversion. A first transistor ( 622 ) has a first current electrode and a control electrode...
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7024448 |
Multiplier
A multiplier having a simple constitution, excellent performance with respect to high-frequency characteristics and distortion characteristics, and allows low-voltage operation. Transistor Q 11 ,...
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7023378 |
Self-calibrating wideband phase continuous synthesizer and associated methods
The synthesizer and method provide a relatively wideband swept frequency signal and include generating a first swept frequency signal with a first generator, and successively switching between...
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7020675 |
Multiplier using MOS channel widths for code weighting
A multiplier includes an input stage to receive input signals to provide currents at a plurality of source nodes. An output stage includes a plurality of transistors groups, each of the transistor...
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7010563 |
Multiplier with output current scaling
A multiplier includes an input stage to receive input signals to provide currents at a plurality of source nodes. An output stage includes a plurality of transistor groups, each of the transistor...
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7009442 |
Linear multiplier circuit
A linear multiplier circuit comprises a first, a second, a third and a fourth transistor, each having a drain, a source, a gate and substantially an identity threshold voltage. Each of these four...
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6992531 |
Dual-oscillator signal synthesizer having high frequency offset stage
A signal synthesizer includes a high frequency offset stage having a high frequency offset source and frequency translation element in the feedback path of a dual-oscillator offset loop...
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6992510 |
Multiplier circuit with offset compensation and quadricorrelator
A multiplier circuit has an analog multiplier with two signal inputs. A respective switching device is connected to each one of the two signal inputs of the analog multiplier for periodically...
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6982578 |
Digital delay-locked loop circuits with hierarchical delay adjustment
Fine tuned signal phase adjustments are provided by multiple cascaded phase mixers. Each phase mixer outputs a signal having a phase between the phases of its two input signals. With each...
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6963734 |
Differential frequency down-conversion using techniques of universal frequency translation technology
Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal, and applications thereof are described herein. Reducing or eliminating DC offset...
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6946894 |
Current-mode synapse multiplier circuit
A current-mode synapse multiplier circuit multiplies each of a plurality of pulse signals with each of a corresponding plurality of weight signals. The synapse multiplier includes a plurality of...
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6924674 |
Composite source follower
A folded cascode device senses the drain current of a source follower, and a current mirror device multiplies the sensed drain current for application to an output load. The source follower and the...
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6815997 |
Field effect transistor square multiplier
A FET square multiplier is disclosed that transforms an input signal into two currents I 1 and I 2 , the difference of which is proportional to the square of the input signal. A first and a second...
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6812771 |
Digitally-controlled, variable-gain mixer and amplifier structures
Digitally-controlled, variable-gain mixers and amplifiers are provided which couple transconductance cells to receive respective tap signals from a fixed attenuator that receives a first input...
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6812769 |
Switched charge multiplier-divider
The switched charge multiplier-divider according to the present invention is constructed of CMOS devices. Capacitor charge theory is employed to implement the circuit of the switched charge...
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6810240 |
Analog multiplier
The analog multiplier has a MOS input stage. This makes it possible to increase the linearity range of the multiplier. In a development, a cascode circuit having an additional pair of bipolar...
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6806762 |
Circuit and method to facilitate threshold voltage extraction and facilitate operation of a capacitor multiplier
A system and method to extract a threshold voltage for a MOSFET include first and second stages, which include inputs that receive functionally related input currents, are connected to each other....
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6806746 |
Direct frequency synthesizer for offset loop synthesizer
A direct frequency synthesizer provides an output signal derived from a high frequency reference signal that is frequency divided and mixed to satisfy the coarse step synthesis requirements of an...
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6774699 |
BJT mixer for low supply voltage
A BJT operating as a mixer has its collector biased at the knee of the I C vs V CE characteristic. A local oscillator voltage is applied to the base and an RF signal voltage is applied to the...
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6717454 |
Switching mode N-order circuit
A switching mode N-order circuit comprises a first unit, a second unit and a comparator. The first unit includes an operational amplifier integral circuit to integrate a first voltage. The second...
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6690207 |
Power efficient emitter-coupled logic circuit
A high bandwidth emitter-coupled logic (ECL) circuit is provided. The ECL circuit comprises an emitter-follower circuit with first and second transistors having collectors connected to a first...
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6653885 |
On-chip integrated mixer with balun circuit and method of making the same
A radio frequency (RF) mixing device wherein RF core circuit elements requiring signal splitting are provided with one or more signal splitting element(s) (“balun(s)”) integrated on-chip with...
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6642882 |
Mixer, radar module, and communication apparatus incorporating the same
A mixer used in a millimeter-wave band and a microwave band capable of achieving loss reduction, a radar module, and a communication apparatus incorporating the mixer and having high efficiency....
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6639446 |
High linearity, high gain mixer circuit
A mixer circuit includes a first signal input terminal connected to the gate of a first MOSFET, and a second signal input terminal connected to the gate of a second MOSFET. The mixer circuit is...
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