Multiple-Port Networks TRIZ Cases

A directional coupler and diode track reflected power so one tunable LC element can match antenna impedance faster with lower power use.

A self-complementary antenna, resistive matching, and back-coupling line flatten group delay for more accurate RF ranging and faster calibration.

A harmonic injection circuit exchanges harmonics between main and auxiliary paths to widen Doherty back-off range while preserving linearity.

Digital resistor-controlled attenuation replaces active gain stages in ultrasound TGC circuits to cut power use while improving accuracy.

Placing the LC filter before the acoustic wave resonator suppresses IMD while preserving wide-band transmission and steep attenuation.

RF filter groups use near-short-circuit impedance and a common-node coupling circuit to exclude cross-band signals in carrier aggregation.

Dynamic tap perturbation updates equalizer coefficients to cut residual ISI and stay stable under noise and PVT variation.

A single transistor with band-specific matching networks and an SPMT switch cuts RF reflection while reducing multi-band amplifier size and cost.

A DC-floating second wiring cancels magnetically induced high-frequency components, improving filter attenuation and isolation.

Adjusted lithium niobate Euler angles and thickness ratios cut S0 mode loss while moving spurious responses outside the required band.

An on-die active suppression circuit detects DDR PDN resonance noise and briefly shorts excess current to ground to improve power integrity.

Parallel switchable resistor slices with a series capacitor maintain wideband gain and reduce high-frequency impedance mismatch and reflections.

Series LC placement near the signal terminal improves out-of-band attenuation and multiplexer isolation while keeping insertion loss low.

Bit-weight dithering creates fractional attenuation and phase-shift steps beyond the smallest stage, improving RF resolution without extra stages.

Independent current paths bypass the common-mode node so attenuation can be adjusted while preserving signal linearity and input impedance matching.

Preassembled bypass capacitors between ferrite chokes cut EMI, material use, and assembly complexity while keeping low high-frequency impedance.

A differential RC calibration circuit switches reference current through resistor and capacitor phases to cancel parasitic capacitance errors in sigma-delta ADCs.

Coordinated tuning of a varactor-based tracking filter and digital sequence generator cuts RF switching time and suppresses transients.

By sharing switches and signal lines across duplexers, this front-end module supports uplink-band D2D communication in less space.

A switchable isolation filter and bypass path suppress transmit leakage, preserving reception sensitivity during simultaneous multi-band Tx/Rx.

Multiple LC tank circuits on an integrated passive die improve apparent Q and lower resistance while keeping RF filter footprint compact.

A parallel positive and negative LC branch broadens resonance bandwidth while maintaining low impedance for signal filter applications.

A switchable impedance branch in the parallel arm shifts resonance to secure lower-frequency attenuation while preserving multi-band RF filtering.

Separating signals into frequency bands and selectively attenuating low bands offsets high-frequency loss without amplification noise.

Multi-stage matching networks and high-quality piezoelectric films help BAW filters maintain coupling and quality above 5 GHz.

A digitally tuned notch filter attenuates blocker frequencies near collocated RF transceivers to reduce desensitization and preserve receiver sensitivity.

Adjustable HF bandpass filtering and channel selection improve ALE call detection under interference and changing ionospheric conditions.

Switchable capacitor arrays correct RC-CR phase errors from impedance mismatch and layout variation, improving measurement receiver calibration accuracy.

Phase circuits create open and short impedance states to block spurious coupling between RF filters and preserve bandpass characteristics.

Combining BAW resonators and LC elements on one substrate cuts area and electrical losses while preserving wide bandwidth and steep pass-band skirts.

Separate output matching paths use low-pass and variable-impedance circuits to suppress harmonics without raising loss in adjacent RF bands.

Parallel coupling between resonance units suppresses unexpected odd-mode resonance and preserves noise inhibition in miniaturized filters.

A switchable LC network uses series, shunt, bypass, and grounding paths to correct antenna mismatch and improve RF power transfer.

A shared inductor lets the matching and LC resonance circuits suppress near-tone intermodulation noise while preserving RF amplifier linearity.

Dynamic analog and digital filter tuning helps rotary encoders reject noise and improve position detection accuracy in motor devices.

Auto-swept RF test signals verify antenna impedance matching against expected response, improving tuning accuracy without probe-based measurement.

An internal crossover and Y-branch pin layout lets GPS L1/L5 RF filters run on single-layer PCBs while avoiding extra routing layers and pin variants.

Selective dielectric film coverage on LiNbO3 IDT electrodes suppresses unwanted waves in compact multi-band acoustic wave filters.

A dual-inductor multiplexer layout improves impedance matching across more bands while reducing insertion loss and signal leakage.

Two signal paths, a balun, and phase shifting let a duplexer recover branched power while maintaining transmitter-receiver isolation.

By moving the LC circuit unit outside the resonator region, this multilayer filter strengthens magnetic coupling and sharpens attenuation.

Measured antenna impedance drives a variable LC filter to improve amplifier matching, transmission efficiency, and power use.

Shorter switch-to-multiplexer paths cut insertion loss and improve impedance matching in multi-band high-frequency modules.

Multiple parallel resonance circuits in a laminated filter layout let attenuation pole frequencies be tuned independently without enlarging the filter.

Switchable inductance across frequency sub-bands stabilizes Q and impedance in LC tank tuning while reducing chip area and power use.

Superimposed reference and data signals enable iterative MIMO channel estimation and equalization without separate pilot overhead.

Parallel frequency paths remove transceiver interference while keeping insertion loss acceptable during concurrent wireless operation.

Dynamic slicer switching between linear and nonlinear decisions cuts error propagation and improves synchronization in low-power communication states.

Shared capacitors and switched analog baseband filters improve cutoff accuracy across 2G, 3G, and 4G modes while reducing circuit area and noise.

Symmetric capacitive divider branches and DC biasing improve common-mode rejection, speed, and area in high-voltage gate-driver level shifting.