4 results about "Load pull" patented technology

A universal load pull tuner for on wafer load pull and noise measurements is connected directly to the wafer-probe to minimize insertion loss and maximize the tuning range; it incorporates a suspended tuning module and an automated anti-tilting balancing mechanism with manual wafer tip planarization capability, all in a solid housing. The tuning module includes up to three mobile carriages and wideband tuning probes controlling independently impedances for up to three harmonic frequencies. The tuner is mountable under an angle matching the slope of the wafer probes and only requires a simple three axis positioner, without customized accessories, to operate.

This invention discloses a full-process modeling method and system for microwave compound semiconductor devices, belonging to the field of microwave electronic device technology. The method includes six steps: device model creation, measured data import, small-signal model parameter extraction, nonlinear current model parameter extraction, nonlinear capacitance model parameter extraction, and global model verification. It achieves one-stop parameter extraction covering the entire process, integrating analytical and optimization algorithms to improve parameter accuracy. Global verification is performed across five dimensions: multi-bias S-parameters, current characteristics, capacitance characteristics, power sweep characteristics, and load pull circle diagram. Combined with commercial microwave simulation software, a directly loadable Verilog A model is output. This invention solves the problems of disjointed processes and insufficient verification dimensions in existing technologies, improving modeling efficiency and accuracy, and providing precise model support for high-frequency, high-power electronic devices.

The application relates to a power amplifier manufacturing method for improving power backoff efficiency, and belongs to the technical field of radio frequency microwave circuits, and comprises the following steps: step 1: based on the load characteristics of an active device, the optimal efficiency impedance point under linear output power is determined as the optimal impedance of amplifier design; step 2: the determined optimal impedance is pulled out by using a load pulling technology or LOADPULL, and is drawn on a SMITH chart; step 3: based on the optimal impedance obtained by pulling, an equal Q matching technology is adopted to realize low-loss impedance matching, compatibility of loss and bandwidth, impedance variation and frequency band shaping are completed; step 4: a two-stage or multi-stage cascade amplification structure is adopted, the gate voltages of front and rear active devices are controlled, and nonlinear compensation is realized by using gain compression and expansion characteristics of the front and rear stages; the application has the beneficial effects that the optimal efficiency impedance point under linear output power is selected as the optimal impedance of amplifier design, the amplifier maintains higher linear output power, and has higher backoff efficiency.

A computer-implemented method of determining linearity of a power amplifier module (PAM) in load pull measurements includes: receiving an input dataset including a plurality of load pull parameters; processing, by a neural network, the input dataset including the plurality of load pull parameters; and; producing an output dataset including a linearity of the PAM