Multiple-Port Networks TRIZ Cases

BAW coupled resonators replace lumped capacitive elements to cut RF filter size and insertion loss while preserving selective multi-band attenuation.

Cross-terminal band-stop filtering cancels leakage between non-overlapping passbands, improving multiplexer isolation across wide bands.

Variable-capacitor tuning offsets resonator temperature drift in acoustic wave filters, preserving cutoff stability and TX-RX isolation.

Strategic via placement in parallel resonant circuits stabilizes passband and attenuation frequencies despite dielectric layer shifts.

Controllable π stages absorb parasitic capacitance into transmission lines, enabling broadband RF attenuation with low distortion and stable matching.

Neural processing uses temperature and dT/dt sensor data to offset resonator heat-conduction delay and keep oscillator frequency stable.

Dual LC resonators and filter units separate low- and high-band signals with low insertion loss and strong port isolation.

Gate-voltage control of FET parasitic capacitance tunes harmonic termination resonance to offset element variation in RF power amplifiers.

A grounded multiple reflection prevention unit attenuates leaked high-band signals to cut IMD and protect reception sensitivity during 2UL_CA.

Pattern comparison of time-stamped traveling-wave profiles from both line ends pinpoints power line faults with higher accuracy under noise.

A grounded wire placed between low-band and mid-band RF paths suppresses harmonic coupling and preserves signal integrity in multiband modules.

A decoder-driven switched capacitor array adapts reactance to changing load impedance, improving RF power transfer across frequency bands.

Weakly coupled resonators replace front-end RF switching and duplexing, enabling multi-band filtering with lower size, power use, and non-linearity.

Multiple preconfigured PLLs let a retimer switch link rates with lower delay and fewer bit errors during transparent transmission.

A switched shared inductor lets multiple RF filters reuse one termination path, shrinking RF front-end modules while supporting more bands.

Dynamic DFE seeding handles gaps between data bursts, preserving low bit error rates and higher signaling frequency in bursty receivers.

Multiple parallel acoustic or LTCC filters with hybrid couplers raise duplexer power handling while reducing PIM and improving TX-RX isolation.

A lookup-table phase compensation scheme keeps RF attenuator phase response constant across attenuation settings, improving AGC stability.

An on-chip switch and impedance network let one RF transmitter share an antenna across Bluetooth and Wi-Fi without bulky external switches.

A dual-vector regularization approach stabilizes adaptive filter convergence, limits bias, and helps prevent overflow errors.

Induced tank-circuit current is quantized to measure RF field strength and adjust impedance for stronger RFID power transfer.

A switch interchanges resonant paths so one RF filter handles multiple bands with high attenuation, low loss, and fewer elements.

A ferroelectric capacitor with a resistor and normal capacitor replaces bulky inductors while enabling resonance and voltage gain in compact CMOS circuits.

A split-path passive filter uses variable attenuation and delay to cut instrument-channel noise while preserving wide test bandwidth.

A variable inductor lets an NMR probe match 50 Ohm impedance across a broad frequency range while improving signal-to-noise ratio.

A four-stage tripler uses harmonic shaping, mixing, and suppression to widen bandwidth while maintaining low conversion loss and input power.

Common and path-specific matching circuits tune impedance and phase to suppress noise leakage and preserve Tx/Rx isolation across bands.

Complex-conjugate impedance matching across multiple module states reduces HF reflections, preserves signal integrity, and limits power loss.

Weakly coupled resonators and a coupled filter path add an adjacent stopband while preserving passband flatness and power transfer.

Coupled inductors and higher-frequency shunt resonators widen high-frequency passbands without sacrificing electromechanical coupling.

A single LNA uses switched impedance and bias tuning to cover multiple narrow RF bands while reducing IC area and cost.

Passive hybrids, transformers, and a diplexer cut echo and impedance mismatch while carrying Ethernet, power, and DVB-S/S2 on one coaxial cable.

By integrating the inductor into the RF switch, high-frequency modules save space while supporting multiband operation, filtering, and noise reduction.

Form resonator features before cavity release so suspended MEMS structures avoid non-planar stress, etch variation, and unstable operation.

A coupler-based tunable triplexer and diplexer architecture separates multiple RF bands with less redundant hardware, simpler tuning, and lower size.

Shared RF control branches cut switch count and parasitic capacitance while maintaining isolation across multiple network standards.

Floating-body switch branches isolate RF ground noise from the body bias, preserving tunable capacitor stability, power handling, and linearity.

Periodic load cycling lets the matching circuit compare rectified power levels and retune impedance for stable RF tag load operation.

Scalar reflection measurements across multiple tuner states estimate complex load impedance without mixer harmonics or high supply current.

Separating RF switch terminals across a multilayer substrate and ground layer helps compact multiband modules maintain input-output isolation.

Balanced vector signaling and parallel multilevel drivers raise chip-to-chip data rates while improving pin efficiency and lowering power.

Parallel LC resonant branches across transformer windings suppress harmonic distortion in differential RF power amplifiers without losing band matching.

Receive-filter impedance is tuned along the NF-gain tradeoff line to improve LNA gain balance, cut matching circuitry, and shrink the RF module.

Non-uniform IDT and reflector pitch near the antenna terminal reduces high-side stop-band ripple and preserves insertion loss in connected filters.

A balun-generated 180° differential RF amplifier maintains impedance matching while boosting transconductance and gain without extra power.

A shunt-switched high-pass structure adds adjustable RF phase shift while cutting serial-switch loss and keeping group-delay deviation low.

Sequenced control signals switch DSA attenuation units in stages to bound transient glitches, reduce return loss, and improve RF settling.

Acoustic control grooves and impedance matching improve ultrasonic fingerprint sensing, raising recognition reliability with lower power use.

Asymmetric side vias and tuned RF pad spacing cut signal loss while reducing burr and plating defects in multilayer surface-mount modules.

Dynamic bias voltage and headroom adjustment cuts RF transmitter power use while preserving signal quality across protocols and bands.