Accurate calibration of analog integrated-circuits continuous-time complex filters

Ultra-wide band frequency offset estimation systems and methods for analog coherent receivers

Ultra-wide band frequency offset estimation systems and methods for analog coherent receivers

Wideband tunable frequency single-sideband converter with PVT tracking

Polyphase filter

Capacitor compensated dual of polyphase filter

Transmission-line filtering with enhanced frequency response

Polyphase filter and filter circuit

Polyphase filter for mm-wave frequencies featuring symmetric layout

Low power digital phase interpolator

Polyphase filter for MM-wave frequencies featuring symmetric layout

Low power digital phase interpolator

Distributed polyphase filter

Apparatus and methods for quadrature clock signal generation

Transconductance adjustment circuit, circuit device, and electronic apparatus

ANTIRESONANT FREQUENCY-VARYING COMPLEX RESONANT CIRCUIT

SAW-LESS RECEIVER WITH A FREQUENCY TRANSLATED BPF HAVING A NEGATIVE RESISTANCE

Programmable filter

Vector sum phase shifter, optical transceiver, and control circuit

Quasi-resonant composite resonance circuit

FREQUENCY VARIABLE COMPOSITE RESONANCE CIRCUIT

LR polyphase filter

Band adjustment device of polyphase filter and band adjustment method of polyphase filter

Active polyphase filter producing two difference outputs having phase difference of π/2 radians

Passive switched-capacitor filters conforming to power constraint

Filter device

Complex resonance circuit

Poly-phase frequency synthesis oscillator

Radiation hard oscillator and differential circuit design

filter circuit and semiconductor device

Poly-phase filter

Systems, methods, and apparatus for frequency conversion

Signal processing arrangement comprising a filter

Phase shifter circuit with proper broadband performance

Method of designing passive RC complex filter of Hartley radio receiver

INTEGRATED DIGITAL TELEVISION TUNER

Wide tunable polyphase filter with variable resistor and variable capacitor

Active polyphase filter

Regenerative divider for up and down conversion of radio frequency (RF) signals

Quadrature signal generator for tuning phases of all of four generated quadrature signals

Current driven polyphase filters and method of operation

High frequency gain amplifier with phase compensation circuit

Wideband I/Q signal generation device

Image reject filtering in a direct sampling mixer

Polyphase filter with passband compensation and method therefor

Current driven polyphase filters and method of operation

Super harmonic filter and method of filtering frequency components from a signal

Image rejection mixer and multiband generator

Polyphase filter with integrators

Image rejection mixer and multiband generator

Quadrature signal generator, beamforming arrangement, communication device and base station