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gold plating
Hi,
Anyone familiar with gold plating for rf chassis? I know of different types, namely hard gold and soft gold. Also on the purity, eg 99.99% emulsion gold. What are the considerations for deciding what type of gold plating to use? Any useful documents? Thanks.
Re: RF PCB design
what is the purpose of the vias along microstrip? is there any guidelines for the vias, eg separation between vias, separation between via and microstrip, size of via etc.
measure SNR
i'd like to know how do you measure SNR using spectrum analyzer. my first thought was to measure the level of S+N, convert to mW, then remove the S and measure the worst case N or harmonic, convert to mW. Then convert the difference to dBm and take the difference between S and N. Is...
eh can't see the attached articles.
i'm looking at microwave frequency range.
is reflowing of substrate a preferred method? how about interconnecting using high quality semi-flex cables? if this is used does that mean i can do w/o gold plating?
we usually use the 6000 series. any reason why...
microwave mechanical aluminium
anyone has any design guidelines on this? about what material to use, plating? the method used to transfer signal to outside world. sealing or no sealing? thermal issues? emi?
i'll look into the radar handbook.
the design from Eyal seems to use PIN diode for the limiter design. is there other means to implement it for board level?
high frequency probes
anyone here uses those high frequency probes for spectrum analyzer? does it help in troubleshooting? is it accurate? is so any recommendation?
vias on rf boards
some of the rf boards have vias on both sides of certain traces. what are the considerations taken in implementing, ie the size of the via, the number of them, separation between vias, separation between via and trace etc.
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