By Joe Kelly
That includes helpful enter from industry-leading businesses and highly-regarded specialists within the box, this first-of-its sort source bargains skilled engineers a accomplished realizing of the complex issues in RF, SiP (system-in-package), and SoC (system-on-a-chip) creation checking out which are serious to their paintings concerning semiconductor units. The ebook covers key size ideas for semiconductor machine trying out and assists engineers in explaining those ideas to administration to help cut back venture expense, time, and assets. in accordance with real-world adventure and jam-packed with time-saving equations, this in-depth quantity deals execs functional info on crucial issues that experience by no means been provided in one reference earlier than.
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Extra info for Advanced Production Testing of RF, SoC, and SiP Devices
The all-encompassing term sensitivity is used with a receiver because it is possible to measure the full functionality of the SoC device. One such example sensitivity test is to provide modulated Concepts of Production Testing of RF, SoC, and SiP Devices 15 RF signals to the input of the receiver. The baseband output is then analyzed at different input power levels to determine when the data becomes corrupted because of noise introduced during the receiver downconversion process. 5 Testing Transmitters The counterpart to the receiver, the transmitter, performs upconversion on analog baseband signals to produce an RF output from a device.
Values less than –10 dB are typically considered acceptable as an output match. Often, the output match measurement is simply called the S22 measurement. 3 Gain Measurement In many cases the S21 measurement can be used as a gain measurement. There are various definitions of gain in the RF world, and if some conditions of matching are met, the differences between those various gain definitions can be neglected. For instance, if the input and output of a device are matched, S21 can be used as a gain measurement because all of the input power is absorbed by the device, and the output power coming from the device is applied to the load.
2 PLL Measurements The purpose of the PLL in each SoC device is to provide the mixer in the receiver chain with the correct frequencies to downconvert the received signals into the baseband and to provide the mixer of the transmitter chain with the correct frequencies to upconvert baseband signals into the device’s transmitting spectrum. Before we talk about measurements that test the functionality of a PLL in a SoC device, it is important to understand the basic functionality of a PLL. 2 shows a basic block diagram of a PLL.
Advanced Production Testing of RF, SoC, and SiP Devices by Joe Kelly