Sinusoidal Oscillation Interference Reduction TRIZ Cases
- Mixer Circuit LO Leakage Cancellation With Adaptive Feedback
A detector and digital DAC feedback loop cancels mixer LO leakage in real time, maintaining performance under temperature change.
- Microwave Chip I/Q DC Correction for LO Leakage Suppression
Weighted I/Q DC coefficient correction uses spatial leakage factors and attenuator state to suppress LO leakage inside microwave chips.
- Broadband Data Conversion Using Sub-Band Receive Chains
Multiple receive chains split broadband signals into sub-bands, cutting converter size and power while preserving signal processing.
- Variable-IF Receiver Tuning for Image and Intermodulation Rejection
A variable intermediate frequency with dual tunable local oscillators improves image rejection, intermodulation handling, and wide-range receiver tuning.
- Broadband Multi-Channel RF Receiver IF Planning for ADC Spur Avoidance
Distinct IF and sampling frequency pairs keep ADC spurious overtones away from useful RF channels to preserve signal-to-noise ratio.
- Transceiver Power Detection Line Isolation Against Controller Noise
A directional protection element on the power detection line blocks controller noise from entering the receive path while preserving RF power feedback.
- Processor Harmonic Parameter Adjustment for EMI Reduction
Chip harmonics can interfere with wireless communication; adjusting clock or spread-spectrum parameters reduces EMI without physical shielding.
- Chip Harmonic Parameter Adjustment for Electromagnetic Interference Reduction
Electromagnetic interference from chip harmonics can disrupt communication; this case adjusts harmonic parameters without costly shielding.
- Local Oscillator Chain Selection for Spurious Harmonic Management
Dynamic local oscillator chain selection places spurious harmonics outside active radio bands, eliminating the need for additional filters and shielding.
- RF Transceiver Digital Spur Reduction via Clock Frequency Shifting
Frequency mixing separates digital clock harmonics from analogue signal bands, minimizing spur interference and improving signal-to-noise ratios.
- Wireless Transceiver Impairment Compensation Using Auxiliary Receiver
Auxiliary receiver downconverts RF signal to estimate transmit impairments for baseband correction.
- Wireline Transmitter Interference Mitigation via Controller Suspension
A controller switches a wireline transmitter to suspended mode during wireless reception windows.
- Transceiver Circuit Frequency Synthesizer Phase Noise Reduction
Distributed frequency synthesizers generate local oscillator signals at distinct frequencies to minimize mutual coupling in transceiver arrays.
- Direct Conversion Receiver Mixer Duty Cycle Calibration
Adjusting switch mixer duty cycle reduces second-order inter-modulation distortion in direct conversion receivers.
- Variable Capacitor Isolation Circuit for I/O Port Coupling
Tunable variable capacitors adjust isolation between adjacent I/O ports, reducing coupling interference in compact RF devices.