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8994435 Switching core layout  
Traditionally, mixers have been arranged symmetrically around the input signal, which has resulted in problems due to self-mixing or feed-through by the local oscillator signal. Here, however, the...
8957722 Wideband double balanced image reject mixer  
A double balanced image reject mixer (IRM) can be configured to comprise: a common radio frequency (RF) port; four mixer devices, each comprising an intermediate frequency (IF) port, an RF port...
8933745 Transconductance-enhancing passive frequency mixer  
A transconductance-enhancing passive frequency mixer comprises a transconductance amplification stage, a frequency mixing stage, and an output transresistance amplifier. The transconductance...
8907713 Device and method for removing harmonic components  
An apparatus of a Harmonic Rejection Mixer (HRM) for removing a harmonic component and an operating method thereof are provided. The HRM includes a Local Oscillator (LO), at least one frequency...
8779835 Signal processing arrangement and signal processing method, particularly for electronic circuits  
A signal processing arrangement including a signal processing stage that divides an input signal (Vin) applied to a signal input (In) of the signal processing stage into at least two subsignals...
8729954 MOFSET mismatch characterization circuit  
A semiconductor device comprising a first inverter circuit including a first PMOS transistor and a first NMOS transistor, a drain electrode of the first PMOS transistor coupled to a drain...
8638152 Signal transmission circuits  
A signal transmission circuit includes a first selection driver configured to generate a first drive signal in response to an input signal and a first selection signal and drive a transmission...
8593316 Combined digital output system  
A combined digital output system includes two quantization modules, a common mode counter, a differential mode counter, and a summing module. The quantization modules provide two digital signals,...
8583060 Polar modulator and method for generating a polar modulated signal  
A polar modulator for generating a polar-modulated signal based on amplitude information and phase information includes a phase-locked loop which is implemented to enable a setting of a frequency...
8471621 Circuit and method for performing arithmetic operations on current signals  
A circuit for performing arithmetic operations includes a differential capacitive transimpedance amplifier (CTIA) and a cross-multiplexer. The cross multiplexer forwards the current to be...
8433276 Sampling circuit and receiver  
A sampling circuit and a receiver with which filter characteristics compatible with the reception of wideband signals can be realized with a high degree of freedom in the setting of the filter...
8385874 Discrete time direct sampling circuit and receiver  
Provided are a direct sampling circuit and a receiver using a discrete time analog process and having a filter effect of a steep attenuation characteristic in a narrow-pass band without lowering a...
8373490 Method, system, and apparatus for RF and DC switching  
Embodiments of RF and DC switching are described generally herein. Other embodiments may be described and claimed.
8314646 Signal reproducing device  
The purpose is to detect minute electrical signals embedded in noise with a simple device configuration and easily reduce the area of the device by utilizing a semiconductor device in particular....
8289061 Technique to reduce clock recovery amplitude modulation in high-speed serial transceiver  
A method is provided for improving clock recovery signal jitter in digital communication based on a phase adjustment technique in a phase interpolation. A clock signal is expressed as the...
8232832 Voltage adder circuit and D/A converter circuit  
A voltage adder circuit includes an amplifier circuit having a first operational amplifier and into which a first voltage is input, a circuit that supplies an output current to the amplifier...
8233854 Polar modulator and method for generating a polar-modulated signal  
A polar modulator for generating a polar-modulated signal based on amplitude information and phase information includes a phase-locked loop which is implemented to enable a setting of a frequency...
8222947 Low distortion active balun circuit and method thereof  
A signal converting circuit includes: a first single-to-differential circuit arranged to generate a first signal having a first polarity and a second signal having a second polarity different from...
8179185 Sampling mixer, filter device, and radio device  
A sampling mixer includes TAs (transconductance amplifiers), an in-phase mixer section connected to the TA and the TA, an opposite-phase mixer section connected in parallel with the in-phase mixer...
8175552 Filter circuit, wireless transmitter, and wireless receiver  
A filter circuit is constructed of a passive mixer and a frequency response device. The passive mixer generates a frequency-converted signal by mixing an input signal transmitted through a...
8159280 Noise generator  
A noise generator for generating band-limited noise from a plurality of sinusoidal signals at the same level and equidistant frequency position in the noise spectrum is provided. A noise signal...
8138817 Passive harmonic-rejection mixer  
An electronic device comprising a passive harmonic-rejection mixer. The passive harmonic rejection mixer has an input connected to several sub-mixer stages, and the sub-mixer stages are connected...
8115520 Driver circuit  
A driver circuit includes a main driver which receives an input signal and outputs a first signal corresponding to the input signal, a sub driver which receives the input signal and outputs a...
8085079 Summing circuit for a filter  
According to one embodiment of the invention, a summing circuit comprises a first transmitter, a second transmitter, a first current offset circuit and a first transconductance amplifier. The...
8040173 Reference signal generator circuit with filter-less quadrature mixers for wide-band applications  
A first mixer circuit mixes a first center frequency signal with a first local oscillation signal to generate a second mixed signal, and mixes the first center frequency signal with a second local...
8018265 Differential signal generation circuit  
A differential signal generation circuit includes: an inverter array configured to sequentially invert an input signal to generate a plurality of delayed signals; and a phase mixer configured to...
7973586 Sampling mixer, filter device, and radio device  
A sampling mixer includes TAs (transconductance amplifiers), an in-phase mixer section connected to the TA and the TA, an opposite-phase mixer section connected in parallel with the in-phase mixer...
7956667 Power supply voltage forming device and polar modulation transmission device  
Provided is a power voltage forming device which can correct an offset voltage of a high-frequency power amplifier without degrading distortion characteristic of a high-frequency power amplifier....
7932773 Charge domain filter circuit  
A charge domain filter circuit includes a first signal output portion, at least one second signal output, portion, a third signal output portion, and an adder portion. The first signal output...
7852135 Circuit arrangement for signal mixing  
A circuit arrangement for signal mixing. One embodiment provides a circuit arrangement for mixing an input signal with at least one carrier signal. The circuit arrangement includes a current...
7847613 Variable transconductance mixer system  
A variable transconductance device for a mixer apparatus is provided. The apparatus includes at least one variable current source circuit having a plurality of selectively enabled current source...
7830198 Multi-input mixer, mixer device, and mixing method  
A mixer device includes a differential circuit, a transconductance circuit, and a selecting circuit. The differential circuit receives a differential input signal and generates a differential...
7830214 Adjustable chaotic signal generator using pulse modulation for ultra wideband (UWB) communications and chaotic signal generating method thereof  
An adjustable chaotic signal generator using pulse modulation for UWB communications, and a chaotic signal generating method thereof are provided. The chaotic signal generator for UWB...
7808329 Methods and apparatus for improved phase linearity in a multi-phase based clock/timing recovery system  
Methods and apparatus are provided for improved phase linearity in a multi-phase based clock/timing recovery system. Averaging and interpolation techniques improve phase linearity in a multi-phase...
7804351 Mixer circuit for frequency mixing of differential signals  
A mixer circuit designed for low voltage operation with rail-to-rail local signals. First and second transistors form a first input section to produce a first signal. Third and fourth transistors...
7795948 Super-symmetric multiplier  
A circuit includes a multi-tanh cell having a common-emitter node to receive a bias current, and an extra transistor coupled to the common-emitter node to dynamically divert a portion of the bias...
7796842 AC-coupled differential drive circuit for opto-electronic modulators  
An AC-coupled differential drive circuit for an optical modulator is utilized, where a common “node” is defined between top (or bottom) plates of the modulator arms themselves (the “arms” of a...
7777432 Horizontal and vertical dynamic correction in CRT monitors  
A device and method for generation of a dynamic focus correction signal for use with a CRT that includes an analog scanning processor for generating a dynamic focus correction signal that is...
7772892 Differential hybrid circuit  
A main driver amplifier generates first differential signals (Vdp/Vdn) based on pattern data (PAT). A replica driver amplifier generates second differential signals (Vcp/Vcn) based on the pattern...
7737760 Mixer having controllable load with reduced equivalent load value during switching transients of local oscillating signal  
A mixer has a controllable load, a signal mixing module, and a controller. The controllable load is controlled by a control signal to change an equivalent load value thereof. The signal mixing...
7710186 Averaging circuit apparatus, error signal generation system and method of averaging an error signal  
An averaging circuit apparatus comprises a rectifier having an input for receiving a high-speed error signal having, for example, a data rate of 10 Gbps. An integrator is coupled to the rectifier...
7667523 Orthogonal signal output circuit  
An orthogonal signal output circuit having an error correction function for correcting an orthogonal error, including: first and second differential circuits; and first to fourth variable...
7615973 Adder and current mode switching regulator  
Provided is an adder in which all of circuits can be constituted by CMOS transistors, a process is simplified, and a chip size can be reduced as compared with a conventional art. The adder...
7605634 Subtractor circuit and operational amplifier  
Disclosed herein is a subtractor circuit for outputting an output voltage as a difference between a first input voltage and a second input voltage. The subtractor circuit may include a first...
7564286 Clock regeneration circuit  
A clock regeneration circuit includes a half-bit delay device that outputs a half-bit delayed signal B of a multi-level input signal A, a one-bit delay device that outputs a one-bit delayed signal...
7532049 Reduced-noise frequency divider system  
Embodiments of a reduced noise reduction system (“RNFDS”) include a frequency divider and a resampler in signal communication with the frequency divider. The frequency divider receives an input...
7471145 Procedure and circuit device for the subtraction of electrical signals  
The invention relates to a procedure and a circuit device for the subtraction of electrical signals, with at least two regulating loops each comprising at least one amplifier unit. Advantageously,...
7409568 Power supply voltage droop compensated clock modulation for microprocessors  
A voltage source droop compensated clock modulation for microprocessors is described. Specifically, the circuit reduces the clock frequency if a voltage source droop is detected.
7301391 Filtering variable offset amplifier  
A current summing FIR filter can be implemented with multiple differential input stages and variable tail currents. The variable tail currents can be used to appropriately weight the present and...
RE39918 Direct current sum bandgap voltage comparator  
A direct current sum bandgap voltage comparator for detecting voltage changes in a power supply. The direct current sum bandgap voltage comparator includes a summing node, current sources...

Matches 1 - 50 out of 327 1 2 3 4 5 6 7 >