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Cars > tingyuya’s Garage > Blog > Analysis of the need to meet two conditions of the mobile phone PCB board design RF layout

 

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tingyuya

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Analysis of the need to meet two conditions of the mobile phone PCB board design RF layout

By tingyuya

??Analysis of the need to meet two conditions of the mobile phone PCB board design RF layout
??custom pcb manufacturer ?The phone function of the increase is higher PCB board design requirements, along with a Bluetooth device, cellular phones and 3G era, engineers are increasingly concerned about the RF circuit design techniques. Radio frequency (RF) circuit board design RF circuit board design in theory, there are many uncertainties, it is often described as a "black art", but this view is only partially correct, there are many guidelines that can be followed and should not be neglected rule. However, the real and practical skills in the actual design is a compromise deal with them when these guidelines and rules can not be accurately implemented due to various design constraints. Of course, there are many important RF design issues worthy of discussion, including impedance and impedance matching, the material of the insulating layer and stack plates as well as wavelength and standing waves, these phone EMC, EMI impact following phone PCB board conditions that must be met in the design of RF layout to summarize:
??circuit board manufacturing companies http://www.ib...ring-Services
High power RF amplifier (HPA) and low noise amplifier (LNA) isolation
??High power RF amplifier (HPA) and low noise amplifier (LNA) as much as possible to isolate, simply, is to make the high-power RF transmitter circuit away from the low-power RF receiver circuit. More phone functions, components, PCB space, taking into account the the wiring design process limited the highest, all design skills requirements are relatively high. This time may be required to design four to six PCB, let them alternating work and not work at the same time. The high-power circuitry sometimes also include RF buffer and pressure controlled oscillator (VCO). Make sure that the high power region of the PCB, at least one piece of land, preferably not above a through-hole, of course, the copper better. The sensitive analog signals should be as far away as possible from the high-speed digital signal and the RF signal.
??2 design partition
??The design partition can be decomposed physical partition and Electrical partition. The physical partition mainly related to the component layout, orientation and shielding; the electrical partition can continue to break down the power distribution, RF alignment, sensitive circuits and signal grounding partition.
This article from: ibuonline circuit board manufacturing companies, cheap pcb manufacture, All Rights Reserved

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Cars > tingyuya’s Garage > Blog > Analysis of the need to meet two conditions of the mobile phone PCB board design RF layout

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