Modulation Transference Balanced Arrangements TRIZ Cases

Switched transconductance and LO masking cut converter noise and power use while preserving voltage headroom in RF signal conversion.

Feedback-driven complementary LO duty cycles suppress envelope detection and improve IP2 in double-balanced RF mixers without SAW filters.

High-impedance input sections and a bias-controlled output let one RF combiner switch between mixer and amplifier modes without extra switches.

A replica bias circuit with matched resistance and op-amp feedback keeps MOSFET switch resistance linear and cuts intermodulation distortion.

Adjusting a DC bias voltage in a frequency mixer cuts local oscillator leakage without complex filters, improving broadband use.

Replica switches and an error amplifier tune LO amplitudes to match PMOS and NMOS on-resistance, reducing mixer distortion.

Dual transconductance input stages cut third-order harmonic distortion in an up-conversion mixer while preserving output power and lowering amplifier demand.

A two-core mixer switches the RF path at twice the RF frequency to suppress 1/f noise, cut LO drive power, and improve IP2.

Switched transconductance and LO masking cut mixer noise and power use while preserving voltage headroom in upconversion and downconversion.

A CGCS RF mixer input stage adds a PMOS common-source pair to boost gain while reducing dependence on costly high-Q matching networks.

Parallel passive mixer cores are selectively enabled to vary transistor size, cutting receiver power use while preserving linearity.

Phase-shifted differential amplifier paths and RC/LC filtering improve mixer linearity, bandwidth, and interference rejection under strong signals.

A passive balanced I/Q transformer links a single-ended LNA to differential mixers, cutting RF receiver size and power while preserving matching.

Controlled 0°/180° phase switching of mixer overcoupling leakage expands radar angle estimation and helps reduce adjacent lane interference.

A current control circuit cuts switching-stage current during LO polarity changes, reducing mixer noise without sacrificing gain.

An IM2 generator and scaling unit create matched distortion to cancel mixer IM2 in baseband I/Q signals across temperature changes.

Phase-shifted signal-path switches block IF terminal short circuits in a quadrature passive mixer while preserving low-noise conversion.

Opposite-phase transistor pairs, filters, and a combiner suppress IF feedthrough and LO leakage while preserving clean RF output.

Selective mixer-unit and LO-phase switching improves LTE harmonic rejection linearity while preserving 2G/3G operation and limiting spurious emissions.

Bias current reconfigures one RF output stage between variable-gain mixer and amplifier modes, avoiding added switches and complexity.

A DC bias circuit cuts local oscillation leakage in frequency mixing without high-selectivity filters, simplifying broadband RF implementation.

A common-mode sensing loop subtracts output deviations to suppress self-mixing IM2 in RF mixers without coils, area penalty, or gain loss.

Centering the LO divider and mirroring RF mixer quadrants shortens current paths, improving IRR, IP2, and LO feedthrough.

A resistor-capacitor and dual-Q inductor network keeps mixer LO impedance and voltage swing stable from 400 MHz to 10 GHz.

A passive matching path and transconductance stage cancel circuit-induced and flicker noise while reducing chip area and current use.

A follower, switch, and bootstrap circuit cut DC current dissipation while preserving signal mixing for low-power transmitters.

By rotating the mixed signal across gain stages, this mixer improves harmonic rejection while reducing power, area, and mismatch sensitivity.

XOR phase detection and filtered bias control continuously correct I/Q mismatch, preserving 90-degree alignment and reducing residual side tones.

A dual-switching mixer architecture suppresses RF harmonics while reducing sensitivity to gain, phase, and duty-cycle mismatches.

Parallel MOS switching transfers the signal multiple times per LO cycle, enabling up/down conversion with lower-frequency oscillators.

A balancing circuit uses capacitor-controlled gate voltage to keep passive mixer switches linear under large carrier signals and reduce I/Q mismatch.

An inverse-temperature bias on LO transistors preserves Gilbert cell linearity and gain as active mixers heat up in RF systems.

A staged mixer core with LO switching suppresses 1/f noise and LO self-mixing while improving noise figure and linearity in portable transceivers.

A dedicated FET IM2 path generates scaled counter-distortion to cancel baseband IM2 and maintain receiver performance over temperature.

Calibration circuitry tunes sub-mixer weights to cancel harmonic products despite IF amplifier impedance variation and mismatch.

A multi-stage weighting and combining mixer cuts PVT-driven gain and phase mismatch, enabling much higher harmonic rejection with less calibration.

Variable impedance tuners at the mixer input and output maintain matching across bands while rejecting unwanted frequencies.

A matched dummy branch lets a single-balanced mixer reject noise like a differential path without a balun, extra LNA area, or insertion loss.

Timed input shorting blanks the mixer during switch transitions, cutting harmonics and improving linearity for larger signal currents.

Electronically switching active and passive mixer modes balances gain, linearity, noise, and power across wireless standards.

Time-multiplexed common-mode feedback separates I and Q error signals to preserve I/Q isolation while improving IIP2 in passive RF mixers.

A threshold-controlled oscillating amplifier converts input power into interruption frequency, extending log detection range and rejecting thermal noise.

Matched capacitive or inductive coupling between the LNA and mixer suppresses self-interference, improves noise rejection, and simplifies RF paths.

A controllable voltage divider tunes IM3 amplitude and phase in mixer compensation circuits to sustain linearity across frequency and temperature.

By adding a PMOS common-source pair to a common-gate mixer input, this case maintains RF downconversion gain with less dependence on high-Q matching.

A delta-sigma binary control signal drives carrier transposition to boost low-power RF signals while preserving linearity for mobile power control.

Bypass current paths cut LO transistor flicker noise while preserving RF bias and mixer gain, improving low-frequency receiver sensitivity.

Automatic mixer-control tuning cuts IM2 distortion from RF receiver mismatches, improving dynamic range without manual compensation.

Weighted summing across staggered LO-driven switching mixers suppresses harmonic interferers and LO leakage in direct-conversion RF tuners.

A barrel shifter corrects LO phase errors and gain mismatch in a quadrature mixer, reducing image leakage and output distortion.