Modulated-Carrier Systems TRIZ Cases
- Wireless Energy Transfer Resource Selection for Energy Harvesting
Separate thresholds for energy harvesting and data communication help wireless nodes choose preferred transfer resources without sacrificing EH efficiency.
- Metamaterial Leaky-Wave Directional Modulation for Secure OFDM Links
Time-modulated metamaterial leaky-wave antennas secure OFDM links by preserving signals for intended receivers and distorting them for spoofers.
- Backscatter Positioning Using Phase Signals in Indoor Shadow Zones
Phase-based backscatter signals from zero-power anchors enable accurate indoor positioning where GPS and cellular coverage is unreliable.
- Backscatter Anchor Positioning Using Phase Signals Indoors
Multiple backscatter anchors use phase signals at different frequencies to improve indoor positioning where satellite and cellular links are unreliable.
- Hybrid-Cascaded Power Amplifier for Backoff Efficiency Pits
Hybrid cascading of couplers and circulators creates multiple high-efficiency points, easing backoff efficiency pits in ultra-wideband RF amplifiers.
- DC Microgrid Power-Line Signaling for Prosumers Communication
Low-frequency sinusoidal signals on DC power lines enable prosumer communication without added hardware, reducing overhead and preserving grid stability.
- RF Slot Symbol Allocation for Ambient IoT Energy Harvesting
Dedicated RF symbols within wireless slots let ambient IoT nodes harvest energy while preserving uplink and downlink coexistence.