Multiple-Port Networks TRIZ Cases

An added series-parallel resonant circuit suppresses cross-band leakage in multiplexers, preserving isolation and signal quality over wide frequency gaps.

Placing inductors on a lamina and capacitors on the bare die cuts RF interconnect impact, saves space, and improves receiving link performance.

High-frequency impedance peaking between a transistor gate and output suppresses ISI jitter, widens the eye window, and avoids bulky inductors.

Preassembled busbars, ferrite-core chokes, and bypass capacitors cut differential and common mode noise with less space and assembly cost.

Variable capacitance built into the low-noise amplifier shifts phase for beam steering while cutting insertion loss, chip area, and power use.

Odd-mode capacitors, low/high-pass networks, and coupled inductors widen isolation bandwidth while cutting insertion loss and size.

A series inductor on the shortest-pitch parallel resonator shifts Rayleigh-wave ripple outside another pass band and keeps insertion loss low.

A parallel low-pass and high-pass RC topology cuts DAC output impedance at DC and low frequency while preserving transfer function.

Analog taps tuned by temperature sensing improve RF filter stopband attenuation and stability while limiting insertion loss.

Mutually coupled inductors and tunable capacitance create multi-state notch filtering that cuts switch count, die area, and RF harmonic leakage.

Internal matching and bias tuning improve LO-to-RF, RF-to-LO, and LO-to-IF isolation in a non-linear frequency mixer.

Series resonators with higher frequency near the common terminal raise passband impedance, reducing leakage and protecting band-pass transmission.

Multiple baluns and tunable impedance devices widen duplexer bandwidth while isolating transmit and receive paths with lower insertion loss.

Calibration maps each RF phase or attenuation state to fine compensation settings, minimizing insertion loss and phase drift.

Dual analog polyphase filters detect spectrum power imbalance to correct residual GHz frequency offsets and extend capture range to ±5 GHz.

A bias circuit with impedance units and a transistor offsets PN junction temperature drift to keep power indication signals accurate.

A virtual matching-coil circuit reshapes phase and impedance behavior, removing bulky tuned coils while supporting different ultrasonic instruments.

A high-Q fixed capacitor paired with a small variable capacitor tunes RF filter frequency while limiting Q loss, die area, and cost.

Independent tuning of upper and lower frequency bounds expands RF passband control while maintaining low attenuation and insertion loss.

Opposing polarizations in the BAW border region confine lateral acoustic energy, suppress spurious modes, and improve filter quality factor.

A transformer-coupled bandpass filter suppresses VCO harmonics and phase noise in millimeter-wave circuits while maintaining signal power.

Separate PA paths and a matching circuit cut low-mode switch loss while blocking high-power leakage into the low-output path.

Opposite-phase filter branches and a shunt circuit block out-of-band noise while preserving in-band RF signals with lower insertion loss.

Vertical stub resonators in a multilayer band-pass filter create high-side attenuation poles for compact 5G and millimeter-wave filtering.

T-coil matching, class-AB buffers, and a multi-phase sampler array raise receiver bandwidth and sampling rate while limiting parasitic loss and power.

Embedded attenuators on a high-conductivity substrate cut thermal noise and heat while keeping dense cryogenic lines below -50 dB crosstalk.

A parallel positive and negative resonant circuit broadens filter bandwidth by shaping impedance above and below resonance.

A transformer-coupled bandpass filter suppresses 2nd and 3rd harmonics in differential VCOs, cutting phase noise while preserving signal power.

Adaptive LC tuning emulates high inductance at high current, helping power-line communication maintain signal transmission across changing conditions.

High-frequency AC shapes current in multilayer coupling strips to heat conductive surfaces locally for faster de-icing with lower power.

Acoustically coupled BAW resonators with a variable capacitor and inductor widen RF tuning range while reducing filter count, losses, and space.

Splitting PCM switch parasitic capacitance into separate sections enables smaller matching inductors and wider RF switch bandwidth.

A parallel LC path and matching network shift filter reflection phase to curb carrier aggregation spreading and antenna loading loss.

An RF coupling circuit uses grouped filters and LC grounding paths to isolate frequency bands and limit mutual loading when ideal impedances are hard to achieve.

An inductance adjusting line between ground land and ground plane tunes out-of-band attenuation without changing the filter element.

A capacitor linking two filter paths creates a high-side attenuation pole, boosting second-band rejection without raising first-filter insertion loss.

User grouping by buffer occupancy and CSI lets a base station schedule SU-MIMO and MU-MIMO users with better spectral efficiency and fairness.

Multi-stage decimation filtering separates narrowband sensor channels to improve signal precision without excessive processing complexity.

A pre-tuned fixed balancing impedance improves spillover rejection across radar bandwidth while reducing duplexer tuning complexity.

Spatial quadrature field separation decouples MRI coil units with fewer circuits, preserving SNR and parallel imaging quality.

Separate transmit and receive filters plus phase adjustment suppress attenuation and impedance mismatch in simultaneous multi-band communication.

By using transformer leakage inductance for filtering and main inductance for compensation, this output stage cuts parts, cost, and space.

A symmetric multilayer LC tank uses a serial LC trap tuned to 3x resonance to suppress third-order harmonics without added loss or area.

Split-path balancing with a balun and phase shifter recombines signals to cut duplexer insertion loss while preserving TX-RX isolation.

Higher-frequency AC in multilayer coupling strips concentrates Joule heating at conductive surfaces, avoiding bulky de-icing hardware.

Concentric insulating-conductive strips form a compact bandstop filter assembly that tunes rejection precisely while reducing resistive losses.

A switch matrix and impedance feedback reconfigure probe contacts during RF ablation to shape lesions and stop cavitation-related tissue damage.

Adjustable capacitance and inductance let an RF power splitter maintain high output isolation across 1.8-2.2 GHz with lower insertion loss.

Negative level-shifted pass gates fan out a balun signal while reducing distortion and isolating non-selected MIMO channels at low supply voltage.

Quadrature phase detection adjusts only two polyphase filter delay paths to reduce mismatch errors, noise, and power consumption.