N-Path Filters TRIZ Cases
- Frequency-Selective Receiver With RF Energy Harvesting for Blocker Rejection
Periodic passive-mixer switching sharpens RF selectivity while harvesting blocker energy to cut receiver power use and saturation.
- N-Path Spectral Decomposition for Low-Power Acoustic Classification
Analog N-path filters split acoustic signals into subbands so always-on sound classification can run locally with lower power and latency.
- Frequency-Selective Receiver With RF Energy Harvesting
Phase-shifted N-path reception improves tuning and blocker rejection while harvesting interferer energy to cut receiver power use.
- Superheterodyne Receiver Filtering for Wideband Image Rejection
A translational filter with quadrature passive mixers and frequency-dependent loads suppresses image bands across wide RF ranges.
- N-Phase Passive Receiver Mixer With N-Path Filtering and LNA Removal
A passive gain front end and N-path filter improve receiver sensitivity and isolation while removing the LNA to cut power and chip area.
- Multipath Bandpass Filter Notches for In-Band Channel Rejection
Parallel downconversion filter branches create passband notches that suppress in-band blockers while preserving out-of-band attenuation.
- Dual-Gain Transceiver Front End With N-Way Filtering
Switching between fixed-gain paths and an N-way filter avoids feedback parasitics, preserving gain and noise performance under interference.
- Parallel Multipath RF Filter Branches for Low-Clock Rejection
Parallel DIDS filter branches use phased low-frequency clocks to improve out-of-band rejection and suppress harmonics with less complexity.
- Multipath Bandpass Filter Notches for In-Band Blocker Removal
Parallel RF filter branches place controllable passband notches to remove in-band blockers while preserving wideband signal quality.
- N-Path Filter Branch Circuits for Flatter Passband Response
Common-drain amplifier branches with feedback and degeneration widen N-path filter passbands while reducing droop and sharpening rejection.
- Multipath Bandpass Filters With In-Band Notch Rejection
Parallel downconversion filter paths create in-band notches and out-of-band rejection for wide RF bands without multiple discrete filters.
- Multipath RF Filter with Phase-Shifted Branches for Lower Clock Rates
Parallel phase-shifted downconversion branches improve RF out-of-band rejection while avoiding the high clock rates that increase filter complexity and cost.
- Single Receiver N-Path Filtering for Intra-Band Jammer Rejection
An N-path auxiliary filter removes jammer energy between non-contiguous carriers, improving receiver linearity and noise figure.
- Wireless Receiver Bypass Filtering for High Linearity
Out-band signal bypass filtering diverts interfering frequencies before baseband processing, improving wireless receiver linearity and reducing distortion.
- Higher-Order N-Path Filters for Flatter Passbands and Steeper Rejection
Using common-drain amplifier branches, this case widens N-path filter passbands, reduces droop, and improves TX leakage rejection.
- Frequency Translation Filter for Non-Contiguous Carrier Selectivity
A mixer and frequency-dependent filter create pass-bands around the local oscillator to receive non-contiguous carriers with lower RF front-end complexity.