Multiple-Port Networks TRIZ Cases

Directly coupled switched attenuation cells give broadband gain control across 5-204 MHz while preserving impedance, noise figure, and MER.

Multiple series and parallel LC resonators shape attenuation regions to define the pass band while lowering RF insertion loss.

Variable matching circuits retune impedance and phase for each carrier aggregation band set, preserving transmission quality with one antenna.

Reactive series and parallel elements shift resonator frequencies so multiple acoustic wave filters can be batch-produced on one chip.

Lossy tuning elements and lookup-table parameters let broadband microwave circuits maintain gain across wide bandwidths and temperature shifts.

A transformer matching network lets a TR switch use shorter lines and PA-based shunting to cut insertion loss, area, and receiver noise.

Parallel acoustic wave resonators create overlapping attenuation bands outside the pass band, improving rejection of interference frequencies.

A fixed inductor and capacitive reception filter create an LC attenuation pole that preserves harmonic suppression across multiple communication bands.

A micro-strip line acts as an inductor to resonate with transistor parasitic capacitance, blocking RF leakage and preserving attenuation at 10 GHz+.

An acoustic wave resonator shifts attenuation poles in an LC filter to sharpen cutoff while keeping passband insertion loss low.

Breaking complementary control in an RF phase shifter adds a high-isolation state with shunt termination, limiting loss and die area.

Variable-capacitance notch filters widen harmonic attenuation in power amplifier matching circuits, cutting filter count, size, and cost.

A simplified RF front-end uses an elastic wave filter and matching inductor to cut parts, improve band isolation, and reduce insertion loss.

Parallel zero-forcing equalization uses noise-variance scaling to counter de-whitening, cut latency, and improve LLR decoding accuracy.

Estimates plasma load voltage, current, and impedance from RF generator signals using 2-port modeling for real-time matching control.

Maps attenuation settings to compensation values so RF attenuators keep a stable phase response and avoid AGC-related signal distortion.

A tunable on-chip LC matching network uses coarse and fine variable capacitance to reject RF harmonics while maintaining antenna impedance matching.

Placing the Band66 elastic wave filter nearest the common antenna terminal cuts spurious coupling and protects multiplexer bandpass characteristics.

Raw ADC sampling estimates channel-induced bandwidth narrowing so an adaptive FIR filter can retune peaking and reduce optical bit errors.

A four-stage harmonic shaping and mixing circuit widens tripler bandwidth while holding near-0 dB conversion gain and suppressing unwanted harmonics.

Sensed resonance and current let a PLC coupling circuit adapt impedance, reducing signal attenuation while handling changing line conditions.

Direct field strength detection lets a passive RFID tag retune its tank circuit for better power transfer and more accurate environmental sensing.

Orthogonal inductor layout and tunable bandpass stages help this multi-stage LNA cut mutual coupling, preserve SNR, and reject adjacent channels.

By shifting filter-to-LNA impedance away from attenuation-band gain peaks, this case suppresses disturbing signals and preserves reception sensitivity.

A parallel inductor-capacitor matching layout cuts pass-band insertion loss in elastic wave multiplexers while preserving antenna impedance matching.

Connecting the parallel arm resonator to the even-numbered IDT terminal improves impedance matching, cutting pass-band loss while preserving attenuation.

Pre-measured rectified power guides matching-circuit impedance tuning, keeping RF tag loads powered despite antenna mismatch and unstable supply.

A low-impedance microstrip bias line suppresses lower-band parasitic oscillations, enabling stable high-power terahertz output.

Adaptive PAM-4 de-emphasis uses bit error rate feedback to tune transmitter equalization and improve serial link reliability beyond 32 Gbps.

Switchable impedance in segmented parallel arm resonators shifts pass and attenuation bands while holding insertion loss at the passband edge.

A locally enlarged gap at waveguide branches improves impedance matching, cutting reflection, noise, and propagation loss in antenna feeds.

A harmonic-shunting matching circuit suppresses intermodulation in a dual-stage RF amplifier while preserving linearity in high-power mode.

Combining LC resonant circuits with acoustic wave resonators enables abrupt cutoff behavior and cleaner separation of closely spaced bands.

Dynamic multi-band equalization compensates coaxial cable attenuation in HD analog video, reducing long-distance distortion and cost.

Selected equalized sample subsets drive adaptive FIR tap updates to curb inter-symbol interference and cross-talk with lower processing load.

Predistortion plus a tunable acoustic wave filter suppresses adjacent-channel spurious waves in narrow TV white space bands.

A separate ADC input charge path feeds parasitic capacitances without crossing the RC filter, cutting noise and drive power while preserving settling.

An adjustable parameter lets this notch filter partially attenuate a target frequency while keeping notch bandwidth unchanged for adaptive signal processing.

Passive transformer-based subcircuits let reflectionless filters achieve Butterworth and Chebyshev responses with deep rejection and minimal reflections.

A VSWR-guided control circuit adjusts tunable matching elements in real time to maintain antenna impedance matching across bands and conditions.

Non-binary bit weighting and dithering create fractional RF attenuation or phase-shift steps beyond the smallest stage without adding many stages.

Coupled resonator on-die filters suppress local oscillator spurs and other unwanted emissions while keeping insertion loss low in dual-band WiFi RF paths.

Non-conductor regions around vias curb leakage and transient currents in stacked chips while preserving vertical interconnect reliability.

COF-based equalizer tap adjustment limits clock delay interference in timing recovery, improving sampling phase accuracy and SNR.

A variable RF filter targets neighbor-band interference from changing TV white-space channels while preserving receiving sensitivity.

Lateral and central termination placement cuts ESL in surface-mount RC equalizers, raising resonance frequency and extending useful range.

A switchable RC front-end tunes ADC pole position to suppress STF peaking, avoid modulator overload, and correct 3 dB frequency drift.

Stored whitelist coefficients let a serial receiver retest weak link performance quickly, cutting training time while preserving signal quality.

Variable inductors and capacitors tune downhole cavity antennas in real time to cut reflections, boost signal strength, and improve logging accuracy.

Coiled symmetric coupler and notch-filter patterns suppress third harmonics while avoiding extra chip area and preserving RF layout symmetry.