Frequency-Independant Attenuators TRIZ Cases
- Variable-Finger-Pitch CMOS Resonator for Tunable Clock Frequency
Variable finger pitch in a CMOS FinFET resonator enables tunable clock frequency while reducing chip area and power use.
- High-Frequency Attenuator Layout With Fewer Switches and Lower Parasitics
A π-type output-side switching layout cuts resistor and switch count to save area, lower parasitic capacitance, and preserve impedance matching.
- Wideband Digital Step Attenuator Circuit for IC Linearity
Integrated coil, capacitor, and inverter paths bring wideband DSA onto the IC while preserving receiver linearity and ADC dynamic range.
- RF Switched Attenuator Fine Trimming via Variable FET On-Resistance
Variable FET on-resistance enables precise RF attenuator gain trimming without tiny resistors, preserving signal waveform and return loss.
- Configurable Attenuator Circuit for Adaptive Signal Clipping Prevention
Parallel transistor switches vary attenuation with signal amplitude to prevent clipping and saturation while preserving linearity.
- Programmable RF Attenuator With Continuous and Stepwise Control
A dual-mode VVA combines DAC programming with external analog control to smooth RF attenuation changes and reduce modulation errors.
- Programmable VVA and DSA Attenuation for Smooth RF Level Control
Combining a programmable VVA with a DSA enables smooth RF attenuation changes, improving signal accuracy and calibration range.
- Complementary FET Shunt VVA for High RF Linearity
Parallel NFET and PFET shunt arms use complementary gate control to cancel RF nonlinearity and improve IP3, IM3, and attenuation consistency.
- Programmable VVA Range Switching for Smooth RF Attenuation
Selectable continuous attenuation ranges use DAC and FET control to avoid abrupt RF level changes while preserving precise signal linearity.
- Complementary FET Shunt VVA for High RF Linearity
Parallel NFET and PFET shunt arms use complementary gate bias to cancel RF nonlinearity and improve VVA IP3 and IM3.
- Segmented Digital Step Attenuator for Glitch Reduction
A hybrid thermometer-binary attenuator cuts switching glitches by limiting simultaneous stage transitions while preserving fast step changes.
- MOS Resistor Body-Bias Control for Linear Adjustable Resistance
Body-voltage control keeps MOS drain-source resistance linear across a voltage range, helping signal-conditioning circuits handle variation and temperature.