Radiofrequency Circuit Testing TRIZ Cases

Internal current mirror, ADC, and DAC circuitry estimate crystal oscillator amplifier transconductance without external test hardware.

Current mirror, ADC, and DAC bias-code testing estimates crystal oscillator amplifier transconductance without external hardware, cutting test time.

A two-stage loop-back test correlates sample RF-accurate data with fast PCB waveguide fixtures to cut mmWave package test cost and setup time.

Fixed orthogonal probes and a rotating DUT simplify four-downlink testing for spherical coverage while reducing chamber space and test time.

Voltage decay measurements reveal tiny gate-oxide leakage in RF MOSFETs, overcoming standard-current swamping for earlier defect detection.

An on-chip test circuit generates high-frequency signals using low-frequency control to measure RFIC performance.

A connector pin device uses sliding contact pins within a flexible insulating socket to maintain stable electrical connections.

A parabolic CR reflector maps far-field patterns to a near-field plane, enabling accurate antenna evaluation in limited laboratory space.

An interface with a capacitive element forms a compensation network to reduce signal reflections and losses at the RF probe connection.

Interchangeable sub-modules in a radio frequency measuring device allow independent updates, reducing hardware replacement costs while maintaining performance.

Automatic test equipment excites oscillating crystals at predetermined resonance frequencies to verify mounting and functionality.

RF vector signal transceiver generates test signals at multiple frequencies to isolate and compensate for power loss caused by probe mismatch.

A socket-based testing apparatus positions a test antenna near a device antenna to capture radio waves in the near-field region.

Rotating disc probe eliminates mechanical conflicts with microscope, expanding tuning range up to 110 GHz.

ATE stimulates phase shifters with digital patterns to generate visual representations, reducing reliance on expensive laboratory bench equipment.

A test structure using an introduced reference device to validate de-embedding S parameters.

Segmented modular interface modules minimize physical separation between units under test and pin electronics, maintaining signal integrity up to 50 GHz.

A device evaluation method detects critical noise signals causing malfunctions in electric circuits.

A side-mounted measurement antenna enables over-the-air testing without blocking the contact arm.

A receiving module with coupling radiation elements detects high-frequency signals wirelessly.

A test signal circuit uses impedance transformation to match transmission line levels for radio frequency receiver testing.

Reflector within socket housing directs RF signals back to the DUT antenna, reducing physical size and test time for millimeter wave devices.

An integrated circuit generates internal test signals and analyzes results using radio frequency communication with external equipment.

A measurement device calculates signal-to-noise ratio from filtered digital data to assess RF signal quality.

A heterodyne active load pull tuner uses frequency conversion stages to enable wideband impedance tuning.

Direct RF generation via a phase-locked loop eliminates intermodulation distortion and image signals from digital-to-analog conversion stages.

An active load pull system synthesizes impedance using independent signal sources and pre-calibration routines.

Integrating test oscillators and directional couplers on the chip eliminates external signal loss and phase errors during millimeter wave calibration.

Quasi-simultaneous signal capture at device input and output nodes enables precise contribution determination without external reference signals.

Theoretical calculation of optimal source impedance eliminates signal losses from physical tuners, expanding the synthesizable impedance range.

Integrated read-out circuit tests phase-change material RF switches on a single chip, resolving testing time and accuracy trade-offs.

An RF device uses a testing circuit to detect connection status and control an RF switch for signal routing.

Ferrite shielding in an isolation cavity confines electromagnetic waves, preventing interference between adjacent radio tags during high-speed testing.