Transversal Filters TRIZ Cases
- Virtual Weaver Sampling Mixer for High Image Rejection
A round-robin sampling mixer replaces matched Weaver filters to improve image rejection, selectivity, and noise performance in radio receivers.
- Switched-Capacitor High-Pass Coupling for Low Corner Frequency
Charge sharing across switched capacitors enables high-pass coupling with a very low corner frequency while reducing capacitor size, cost, and THD noise.
- Passive Charge-Sharing IIR Filter for Low-Power Analog Signals
Passive capacitor charge sharing implements IIR filtering for analog signals, cutting DSP resources and power while preventing aliasing and DC offset.
- Charge Domain Filter Bandwidth Compensation With SCN Mode Control
Multiple switch-capacitor networks with selectable impulse modes widen CDF bandwidth and mitigate Sinc-function distortion.
- Charge-Domain Filter Pulse-Width Control for Gain and DC Stability
Adjustable clock pulse width and phase let a charge-domain filter offset process variation while preserving gain, bandwidth, and DC stability.
- Differential FIR Filter Layout for Negative Coefficients
A single resistor network and complementary outputs let an FIR filter realize negative coefficients with differential output and lower element count.
- Programmable Filter Circuits Using Discrete-Time Window Functions
Discrete-time window functions and MDAC channels let one programmable filter widen bandwidth while maintaining strong attenuation and reducing aliasing.
- Switched Capacitor Mixer Filter for Low-Noise Wireless Receivers
A configurable passive switched capacitor filter boosts filtering gain and linearity in wireless receivers while reducing chip area.
- Non-Uniform Distributed Amplifier Filtering for UWB Interference Rejection
Non-uniform transmission-line filtering gives distributed amplifiers tighter passband and stopband control for UWB pulse shaping and interference suppression.