Multiple-Port Networks TRIZ Cases

A differential filter, dual LNAs, and multi-throw switches split RF receive paths for carrier aggregation and MIMO with less board space.

Non-uniform LC shunt legs with edge-lower resonance and damping resistors suppress harmonics and improve RF amplifier drive uniformity.

A filtered, microcontroller-driven current injector stabilizes frequency and voltage for accurate magnetometric mapping of metal structures.

Opposite-polarity inductor placement cancels magnetic coupling between adjacent filters, improving isolation without added shielding.

A current-reuse multi-stage LNA separates matching from voltage division to keep broadband output matching and gain at 1.2V.

A switchable attenuation capacitor with pre-charging enables MEMS microphones to change gain modes without glitches or audio artifacts.

A filtered, frequency-adjustable current source stabilizes magnetometric signals for more accurate structure location and condition checks.

Asymmetric plate electrode areas in a multilayer LC filter reduce lamination misalignment effects and keep inductance and passband stable.

Different conductive bond heights tune parasitic inductance between filter chips, preserving attenuation in composite filter assemblies.

Separated sensing and compensation groups on one substrate reduce EMI filter size, improve durability, and suppress oscillation during active noise filtering.

Real-time frequency detection and tuning let one RF multiplexer share an antenna while reducing pass loss and improving port isolation.

A transformer-based tail filter decouples the tunable capacitor from network inductance to suppress oscillator phase noise in wireless circuitry.

Symmetrical matching circuits and bias control cut reflection loss in bidirectional amplifiers while improving transmit and receive efficiency.

Segmented BAW resonators and shifted resonant frequencies improve RF filter thermal stability, power handling, and distortion control.

Using a hybrid coupler with PIN diodes, this attenuator keeps phase flat while reducing return loss across adjustable attenuation.

A four-coil differential duplexer uses flux cancellation and DC-isolated coupling to improve TX/RX isolation and reduce stray coupling.

An on-die co-existence filter in the power amplifier attenuates WLAN transmit noise to protect WCDMA reception while cutting size and cost.

A spurious-adjustment capacitor shifts stray-capacitance resonances away from target bands to protect low-pass filter attenuation.

A fixed-impedance electrical balance duplexer suppresses radar spillover across wide bandwidth without complex tuning hardware or added silicon area.

Substrate layout places 5G-NR hybrid filters, amplifiers, and inductors to shorten transfer paths, cut wiring loss, and lower power use.

Switchable resistor strings calibrate phase deviations between incremental and index signals, improving optical encoder position accuracy.

A transistor and switchable bias path reshape the RC response to cut in-band droop while preserving out-of-band rejection.

Adjustable impedance in two phase-shifting stages widens orthogonal signal bandwidth while preserving phase accuracy across frequencies.

Placing a diplexer inductor in an internal dielectric layer cuts shield coupling and keeps attenuation poles and filter characteristics stable.

Variable impedance paths adjust electrical length by frequency and power mode, helping RF amplifiers handle wideband signals more efficiently.

By orienting inductors parallel to the dielectric stack, this balun-filter layout shrinks planar size while preserving frequency and balance performance.

By embedding capacitive and inductive elements into PCB layers, this coupler saves internal space while improving RF isolation and wideband performance.

Bypassing excess line current around termination resistors helps differential bus links suppress waveform distortion and communication failures.

Switchable resistors match antenna impedance by field amplitude to reduce oscillations and improve NFC rising-edge detection accuracy.

Inductive coupling and capacitor tuning shrink splitter or combiner area while absorbing parasitic capacitance and limiting signal reflection.

Ground conductor layers placed above stacked filters suppress electromagnetic interference and preserve filter isolation in dense components.

Asymmetric RF filter attenuation enables shared filtering across overlapping downlink bands, cutting filter count while suppressing interference.

Switchable capacitive and resistive elements enable RF LNA input matching and attenuation across bands while improving linearity and noise figure.

An all-pass lattice with transconductance cells and tunable LC networks cuts phase-shifter loss and noise while preserving wide bandwidth.

Combining low-pass and high-pass LC sections lets a compact MMIC power splitter widen bandwidth while using fewer components.

A dual-path collocation circuit detects Wi-Fi transmission and attenuates blockers so Zigbee preambles remain decodable in compact 2.4 GHz devices.

A stacked conductor-layer filter layout offsets adjacent inductors to cut electromagnetic coupling loss and improve signal efficiency.

A ferroelectric tunable acoustic resonator adds negative equivalent capacitance to offset series resonator limits and widen filter bandwidth.

Parallel and series LC tank networks let one amplifier match impedance at multiple resonant frequencies, reducing multi-band RF complexity and power.

Lumped-element low-pass filter networks replace bulky transmission lines in a Doherty combiner to widen bandwidth and simplify integration.

Matching the resonator peak to the multiplexer impedance minimum suppresses IDT spurious emissions and improves out-of-band attenuation.

Acoustic coupled resonator filters replace bulky inductor baluns, enabling compact 4:1 PA-to-filter impedance matching in mobile devices.

Magnetic and electric jump coupling in a multilayer bandpass filter adds attenuation poles while widening coupling adjustment and improving terminal isolation.

An analog filter bank extracts LiDAR beat frequencies before ADC, cutting FFT workload while preserving high distance resolution.

A single matching and tuning inductor with switching cuts RF front-end space and cost while preserving multi-band receiver impedance matching.

A switchable notch circuit lets one acoustic filter cover multiple UNII bands while preserving out-of-band rejection and low insertion loss.

Isolation capacitors, bias resistors, and attenuation diodes cut RF insertion loss and gain-to-phase error in compact DSA layouts.

Electromagnetically coupled windings replace switches and quarter-wave lines in a balun, cutting loss and improving gain and power efficiency.

A bridged RC ladder with tunable resistors and capacitors improves first-alias suppression while keeping on-chip anti-alias filter power low.

A sandwiched conductor layout in stacked resonant circuits cuts electromagnetic coupling, enabling smaller branching filters for mobile devices.