Multiple-Port Networks TRIZ Cases

A hybrid split between on-chip tuning and off-chip combining cuts mmWave multi-band loss while improving reliability and power use.

Electromagnetic coupling between an inductor and matching network improves stop-band attenuation in a compact RF module, while shielding limits stray paths.

Using two impedance measurements and antenna tuner states, this case shows online RF calibration that cuts factory tuning time and cost.

Using one variable reactance in each arm, this filter tunes center frequency and bandwidth while reducing circuit size and control complexity.

Frequency division, mixing, and a tunable band-pass filter suppress VCO pulling and harmonic components for a cleaner LO output.

Redundant conductive sections and adjacent grounding members tune via impedance in multilayer PCBs, reducing reflections without back drilling.

An RLC impedance in the speaker supply ground or feedback loop suppresses resonance peaks and high-frequency output without changing current control.

A switchable matching network lets one SAW resonator monitor multiple center frequencies without extra reflection gratings, saving substrate area and signal energy.

Variable receiving-band rejection and impedance matching cut receiver noise while preserving transmitter insertion loss and duplexer isolation.

An open inductor adds stray capacitance to widen attenuation in a multilayer filter without extra LC circuits, cutting size and complexity.

Intermittently nonlinear analog filtering removes impulsive noise before ADC, preserving bandwidth and enabling real-time processing.

A switched diversion circuit redirects MRI-induced RF energy from implanted leads to a dissipating surface, reducing tissue heating risk.

Separate high-pass and low-pass paths tune phase and amplitude across frequency ranges to cancel asymmetrical intermodulation distortion.

Adaptive symbol and subcarrier interval control applies FTN only when conditions allow, improving spectrum use without overloading receivers.

Removing insignificant filter elements and converting some to static capacitance improves rejection slope, lowers loss, and shrinks footprint.

A compensated transformer balun suppresses common-mode noise to enable broadband, efficient frequency doubling above 60 GHz.

Adjustable matching elements and piezoelectric resonators tune RF filter frequency and bandwidth while keeping characteristic impedance stable.

Segmented coupled resonators suppress WiFi local oscillator spurs and other emissions while keeping insertion loss low and matching stable.

Overlapping inductor pairs form magnetically coupled transformers that shrink RF delay lines and cut insertion loss in beamforming circuits.

A wideband receiver estimates out-of-channel interferers so a narrowband receiver can cancel in-channel distortion and preserve signal integrity.

A shared matching and impedance unit handles related signal paths without switches, cutting chip area while avoiding path interaction.

Using π-type LPFs and T-type HPFs in a Wilkinson divider suppresses loop oscillation while preserving wideband Doherty amplification.

A tunable notch filter integrated with an antenna switch rejects second harmonics while maintaining low insertion loss across switch paths.

Passive mixer delay cells tune filters and duplexers across wide bands while cutting leakage, distortion, cost, and filter bank complexity.

An RC compensation circuit offsets transistor reactance in a programmable RF attenuator to keep attenuation flat across frequency.

Acoustic coupling with a variable capacitor and inductor tunes RF resonances to cut filter count, losses, and front-end complexity.

Incremental shunt and series reactive elements keep impedance matched across phase steps, reducing reflections and power loss.

A series inductor and high-capacitance shunt resonator suppress Band66 spurious coupling into Band30 while preserving low loss and matching.

Switchable low-pass and band-pass filtering lets one receiver handle non-contiguous signals while attenuating jammers and reducing size.

Directly computes load impedance in a two-port matching network to avoid iterative tuning, sensor loss, and local minima.

An all-pass filter with antiresonant circuits linearizes phase delay across frequency to cancel wideband RF interference and protect receiver sensitivity.

A simplified LC filter topology uses fewer variable capacitors to widen tuning range while keeping steep attenuation on both passband sides.

An inductor and low-resonance parallel-arm resonator raise filter impedance to curb signal leakage while keeping multiband insertion loss low.

Magnetically coupled inductors create virtual inductance in a BAW filter to widen and flatten passbands above 1.8 GHz while reducing spurious modes.

Controlled transmit and receive equalizer changes distort serial signals against probing while authorized receivers still recover the data.

A three-resistor ladder network delivers equal dB attenuation steps with simpler switching and lower circuit complexity.

Electronically controlled reactance tuning cuts RF matching time for dynamic plasma loads while reducing reflected power and stabilizing processing.

Loop-plane and via-hole placement simplifies diplexer routing, cutting insertion loss while preserving high- and low-band filter isolation.

Precomputed noise-correlation filtering rejects jamming in multichannel receivers while lowering real-time matrix inversion and memory demands.

Iterative resistor tuning with saturation detection calibrates integrated RC filters, stabilizing cutoff frequency despite CMOS tolerance spread.