-
DAS vs IBS: What's the Difference? | In-Building Coverage Explained
Jun , 09 2026
1. The real problem: indoor signal is broken Over 80% of mobile traffic happens indoors — yet most buildings kill signal in seconds. Concrete walls, steel frames, low-E glass, underground parking: all block RF. From 2G to 4G, outdoor macro towers could still punch through building walls. That changed with 5G. Higher spectrum (3.5GHz to mmWave) barely penetrates. Even with boosted power, 5G signals...
View more
-
RF Isolator vs Circulator – What's the Real Difference?
Aug , 04 2026
Engineering deep dive · Ports, functions, specs, and selection traps RF Isolator and Circulator are two of the most misunderstood passive components in microwave engineering. The core difference comes down to ports and function. An Isolator is essentially a three‑port Circulator with its third port terminated into a matched load. A Circulator is a non‑reciprocal signal router — it directs signals ...
View more
-
Circulator Temperature Drift: Why Isolation Fails at -40°C to +85°C
Sep , 15 2026
A circulator's isolation fails to hold 20dB over a wide temperature range because the ferrite's saturation magnetization (4πMs) changes with temperature. This shifts the device's operating frequency and impedance match. A circulator rated at 20dB isolation at room temperature can drop to 15dB or lower at -40°C or +85°C. This is not a design flaw — it is the physical nature of ferrite materials. Th...
View more
