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DAS Link Budget Calculation: A Step-by-Step Guide from RRU to Antenna Port
Oct , 13 2026
Why Is the Link Budget Always Off? The most frustrating part of DAS design isn't drawing the system diagram. It's calculating the antenna port power, thinking it's sufficient, and then measuring it on site to find it's off by 5 or 6 dB. Coverage shrinks, users complain, and when you trace it back you find — component insertion loss was undercalculated, feeder loss was estimated wrong, connector lo...
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VSWR vs Return Loss vs Isolation vs Directivity: How These Four RF Parameters Connect
Nov , 03 2026
A conversation that happens on site more often than it should "What's the isolation on this coupler?" "22dB." "And directivity?" "Not listed. It only says isolation." "So can we use this part or not?" The conversation stalls here. 22dB isolation doesn't sound bad. But without directivity, you don't know whether that 22dB comes from "the forward coupled port and the reverse isolation port are well ...
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