A RF circuit components encapsulated Notes
Successful RF design must pay careful attention throughout the design process every step and every detail, this means that we must be thorough, careful planning at the beginning of the design phase, and the progress of each design step is to conduct a comprehensive assessment of ongoing . And this is precisely detailed design skills most of the domestic e-business culture is lacking.
In recent years, due to the demand and growth of Bluetooth devices, wireless local area network (WLAN) equipment, and mobile phones, prompting the industry increasingly concerned about RF circuit design techniques. From the past to the present, RF circuit board design as electromagnetic interference (EMI) problems, as has been the most difficult to control most of the engineers, even a nightmare. If you want to design a successful, must be carefully planned in advance and attention to detail can be effective.
Radio frequency (RF) circuit board design Because there are many uncertainties in theory, it is often described as a "black art" (black art). But this is only a generalization of view, RF circuit board design there are many rules to follow. However, in the actual design, the real practical skills when these laws can not be implemented due to various constraints, how they can be compromise. RF important design issues include: impedance matching, and the laminate insulating layer material, and so on ... and harmonic wavelength.
The video is described radio frequency circuit, the new circuit component package size considerations.
WiFi product development process, the wiring RF circuit (RF Circuit Layout Guide) is a crucial process. Many times, we may have the perfect design in principle, but in practice the system board, after the piece was found far from ideal, in fact, these are the wiring (Layout) do not perfect reason. This will be a wiring example of a wireless network card and my little experience we explain some of the problems in the RF circuit wiring should pay attention to.
II. Stacked configuration circuit board (PCB Stack Up)
Before performing the wiring, we first determine the configuration of the circuit board of the stack, like building a house with a first wall of the house. For stacked configuration of a circuit board complexity, electromagnetic compatibility considerations and many other factors determining circuit design. The following figure shows the common mode configuration bundle four panels, six, and eight plates of the plate.