Switched Capacitor Networks TRIZ Cases
- Circulator-Based Reflective RF Filter for Wideband Reconfiguration
Non-reciprocal circulators and reflective N-path filter elements enable wideband RF reconfiguration with linear filtering and selective path control.
- 3D Switched Capacitor Circuit Layout for High-Current CPU Power
Stacked switch and capacitor layers shrink converter area while delivering the high current modern CPUs require.
- Switched-Capacitor Ripple Cancellation Using Mirrored Current Pulses
Mirrored current pulses cancel switched-capacitor ripple on voltage lines, improving regulator stability without larger load capacitance.
- Analog Charge-Diffusion Filtering Circuit for Adjustable Gaussian Bandwidth
Charge diffusion across sampled capacitors enables analog Gaussian filtering with adjustable bandwidth while avoiding large RC components for slow signals.
- Dual RF Connection Circuit With Filtered Port Isolation
A filter removes induced transmit signals in a dual RF path, preserving port isolation and reception quality during simultaneous transmission.
- Programmable Alias Delay Circuit for Long RF Delay at High Frequency
Switched-capacitor aliasing extends RF delay beyond 5 ns at high frequency while avoiding bulky cable spools and power-hungry conversion stages.
- Audio Amplifier Filter Topology With Fewer Op-Amps
A consolidated N-order filter cuts op-amp count to reduce circuit area, power use, and harmonic interference while preserving audio signal linearity.
- Switched-Capacitor Gain Adjustment for Stable Loop Gain
A level-shifting capacitor array adjusts equivalent capacitance to compensate DC gain drift and keep switched-capacitor loop gain stable.
- Switched-Capacitor Switching Circuit With Preliminary Input Feed
Pre-feeding the input voltage to the second switched-capacitor stage cuts signal delay and improves turn-on speed in a series switching circuit.
- Programmable Baseband Filter Reconfiguration for Stopband Rejection
Switchable coupling between baseband filter stages improves stopband rejection and noise reduction across 5G NR, 4G, and GSM without extra IC area.
- Parallel Sampling Circuit for Higher Analog Data Rate
Two sampling capacitors alternate with one amplifier to double analog data rate while avoiding the extra power draw of dual-amplifier circuits.
- Programmable Baseband Filter Switching for Stopband Rejection
Switchable single-pole and complex-pole baseband filtering improves stopband rejection and noise control without increasing IC footprint.
- Switched-Capacitor Glitch Filter for Burst Reset Stability
A switched-capacitor glitch filter uses reset stages to suppress burst glitches under 50 ns while avoiding RC time-constant variation.
- Capacitive DAC Charge Compensation for Faster Settling
A charge compensation circuit shares capacitor charging with reference buffers to speed settling and cut power in capacitive DACs.
- MEMS Gyroscope Sense Amplifier Filtering for Linear Noise Rejection
Low-pass and anti-aliasing filters in the DC discharge path keep MEMS gyroscope sense amplifiers linear while rejecting resonant noise.
- Filter Bypass Circuit for Fast Step Response
A step detector bypasses filtering during large input changes, cutting filter delay while preserving signal quality in normal operation.
- Switched-Capacitor Charge Compensation for Faster Settling
A replica reference and compensation circuit supplies switching charge locally, cutting reference-source load, ripple, and settling time.