Electromagnetic Receivers TRIZ Cases
- Multi-bandwidth Carrier Phase Estimator for Cycle Slip Reduction
Parallel high and low bandwidth estimators detect cycle slips by comparing phase differences, correcting rotations to maintain low bit error rates.
- Polarization Skew Estimation Using Adaptive Equalizer Coefficients
Calculates transmitter and receiver polarization skew using adaptive equalizer coefficients to reduce digital signal processing complexity.
- Optical Receiver Shielding for Noise Resistance
A conductor pattern surrounds signal lines to shield electromagnetic waves in optical receivers.
- Balancing Avalanche Photodiodes in Coherent Receivers
Dynamic bias adjustment reduces local oscillator power consumption while maintaining high receiver sensitivity.
- Optical Source Temperature Control for FSO Reliability
Temperature control stabilizes the wavelength distribution of an optical source, reducing noise and bit errors in free-space optical communications.
- Integrated Dual-Polarization Kramers-Kronig Receiver Architecture
Merging beam splitting and coupling functions into integrated photodetectors reduces the footprint of dual-polarization Kramers-Kronig receivers.
- Optical Signal Chromatic Dispersion Characterization
A delay means and phase detector measure signal phase shifts to calculate a chromatic dispersion indicator.
- Optical Signal Monitoring via Frequency Conversion
Frequency conversion eliminates high-resolution ADC requirements, resolving dynamic range and cost contradictions in optical monitoring.
- Parallel Linear Convolutional Filters for Nonlinear Interference Compensation
A parallel array of linear convolutional filters estimates nonlinear interference fields to compensate signal impairments in optical communications.
- Hybrid Cavity LO Laser for Coherent Receiver Phase Noise
A hybrid external cavity local oscillator laser reduces phase noise in coherent optical receivers.
- Receiver Circuit with Switchable Amplifier Paths
A receiver circuit uses multiple parallel amplifier paths to select optimal gain for specific transmission rates.
- Differential Phase Encoding in Direct Detection Optical Transceivers
A direct detection optical transmitter encodes bits using differential phase modulation alongside pulse amplitude modulation to double spectral efficiency.
- Optical Receiver Fractional Sampling Timing Recovery
An optical receiver uses fractional sampling and interpolation timing recovery to process high-speed data signals.
- Hybrid Modulation Format Clock Tone Generation
Hybrid modulation formats produce clock tones at lower frequencies to preserve timing recovery when using small roll-off factors in optical networks.
- Sub-band Chromatic Dispersion Equalizer for Low-Power Transceivers
Segmenting the spectrum into parallel sub-bands reduces circuit size, leakage, and power consumption while maintaining equalization effectiveness.
- Low-latency flexible transceiver adjustment via pilot signal
Modulating configuration data onto a pilot signal enables microsecond-level transceiver adjustments without interrupting network traffic.
- Optical Receiver Sampling Rate Adaptation
Adaptive sampling rate adjustment in optical receivers using filter coefficients to optimize processing efficiency.
- Frequency Offset Estimation via Correlation Peak in Coherent Optical Receivers
Correlation processing detects frequency offset peaks in reception signal spectra without pre-compensated signals.
- Self-Coherent Optical Chip Using Delay Interferometers
Integrated self-coherent receiving optical chip uses round-trip delay interferometers to perform signal demodulation without a local oscillator laser.
- Optical Receiver Phase Error Evaluation via Transfer Function Decomposition
Calculates phase errors by decomposing the transfer function into shear, scaling, and rotation matrices to distinguish hybrid misalignment from channel skew.
- Digital Filter Amplitude Correction in Coherent Optical Receivers
Correcting digital filter output amplitude via phase and amplitude feedback resolves signal processing accuracy issues in coherent optical transmission systems.
- Sparse Tap Coefficient Vector for Optical Signal Equalization
A signal processing apparatus uses an L0 norm constraint to generate a sparse tap coefficient vector for adaptive equalization.
- Coherent Optical Receiver Signal Splitting for Frequency Offset Suppression
A coherent receiver splits received optical signals into multiple paths to enable precise local oscillator generation without additional hardware.
- Coherent Optical Receiver Without Local Carrier Light
An optical convolution circuit and demodulation algorithm estimate scatter coefficients, stabilizing signal reproduction while reducing device complexity.
- Cyclostationary Analyzer Using Frequency Combs
Optical frequency combs perform spectral decomposition to eliminate high-bandwidth digitization and real-time Fourier processing for wideband signal detection.