Magnetic Amplifiers TRIZ Cases
- Switchable Transformer Amplifier for Non-Contiguous Frequency Bands
By switching inductors between passbands, the amplifier avoids wideband power waste while maintaining gain for the active frequency band.
- Balun-Coupled Low Noise Amplifier for Gain and Stability
A single-ended LNA feeding a balun and differential gain stage lowers noise figure while improving gain control and stability.
- RF Power Amplifier Transformer Feedback for Injection Pulling Mitigation
A feedback capacitor and magnetically coupled coil feed inverted PA signals to the oscillator, reducing harmonics and injection pulling at low voltage.
- RF Transmitter Feedback Topology for Harmonic Distortion Mitigation
A feedback capacitor and transformer coupling cancel harmonic distortion and injection pulling in low-voltage RF transmitter circuits.
- RF Amplifier Transformer Resonator for Gain Slope Equalization
A transformer-coupled resonator equalizes RF amplifier gain slope across frequencies while minimizing loss and impedance mismatch.
- Differential Millimeter-Wave Front End Without PLL for OOK Modulation
A differential millimeter-wave front end uses OOK switching and differential transformers to remove PLL complexity, power draw, and chip area.
- Series Transformer Combiner PA Harmonic Tuning for Parasitic Capacitance
A center-tap harmonic tuning network cancels parasitic capacitances in series transformer combiners to improve PA output balance, power, and efficiency.
- Parallel Transformer Power Amplifier for Dual Output Modes
Parallel transformers and MOSFET switching enable high and low power modes while cutting DC power use and switching losses.
- RF Transmitter Transformer Feedback to Mitigate Injection Pulling
A feedback capacitor across transformer windings suppresses harmonic distortion and mitigates injection pulling in low-voltage RF transmitters.