Rg402 in Test Radio Active Devices

There are many active devices that are non-linear. This proposes other factors that are especially considered in testing, especially in these states, in these states, in these states, the nonlinearity of devices may be important. The S-parameter measurement of the rg402 can only describe the response of the device to small signals. In this case, the behavior of the device is likely to approximate the rg405 static operating point (usually a linear component operated under DC bias voltage.) In these Next, rg402 can be capable of measuring the VNA of the X parameter. VNAs with x parameter functions can measure linear and nonlinear aspects of device performance, and contain nonlinear information in the X parameter file, for example, the amplitude and phase distortion generated when placed in large signal conditions.

In other cases, the actual impedance of the rg402 may be unknown under all operating conditions of the device. For high power amplifiers, in order to ensure effective transmission and optimum linearity, it is necessary to understand this impedance to achieve best matching with downstream electronic devices and antennas. This is especially used in high power amplifiers and high power electronic devices. In these devices, when the rg405 is reflected to the output of the device, even a small reflection can cause damage, or the voltage is sufficient to change the embrace of the device behavior. At this time, load tension testing is required. The load tension is a measurement technology that can observe the performance parameters of the device when the input or output port impedance of the device can be observed. The ultimate goal of the load tester is usually characterization device and find the best work point for a given output impedance.

Testing active rg405 devices is usually more complicated than rg402 test passive devices. For some types of tests, the input and output signals of the active device may exceed the performance threshold of the common test device, such as a signal generator, a spectrum / signal analyzer, a vector network analyzer, and a power meter. In these cases, in addition to the basic test devices, the amplifier rg405 or attenuator can reduce the signal power to the level of the device, or the radio frequency signal of the device (DUT) is enhanced to the level required to actually test.

If a very high power level is used rg402, the attenuator may be insufficient to completely protect the downstream sensitive test equipment, and the directional coupler may be used to achieve power reduction (isolated) from the high power signal path, which may terminate at the high power terminal. .