PRODUCT OVERVIEW
This is a small CBRS / LTE Band 48 / n48 5G band pass filter centered at 3625 MHz and a bandwidth of 150 MHz. The band extends from 3550 MHz to 3700 MHz.
Typical insertion loss of less than 4 dB in the pass band. This filter has excellent rejection specifications and provides power handling of up to a maximum +24 dBm and has an operating temperature range of -40C to +85C.
APPLICATIONS
The 3550–3700 MHz band is CBRS (Citizens Broadband Radio Service) — a shared, tiered spectrum system rather than a simple licensed band, and understanding that structure explains why filtering matters here.
Three tiers share this spectrum:
- Incumbents (highest priority) — U.S. naval radar and Fixed Satellite Service earth stations, protected across the full band, with FSS specifically concentrated in 3600–3650 MHz
- Priority Access License (PAL) — auctioned, county-level licenses, confined to 3550–3650 MHz
- General Authorized Access (GAA) — license-free, lowest priority, with 3650–3700 MHz reserved exclusively for GAA use
This tiered-sharing structure is exactly why out-of-band rejection matters for CBRS equipment. A CBRS receiver — whether it's a private LTE/5G base station, a test bench characterizing CBSD hardware, or a WISP's fixed wireless link — sits in a genuinely crowded stretch of mid-band spectrum, surrounded by other private networks, adjacent commercial 5G n77/n78 traffic, and general RF congestion.
This filter rejects energy outside the 3550–3700 MHz window before it reaches your receiver, keeping your CBRS link clean regardless of what else is active nearby.
Typical uses:
- Private LTE/5G network deployments (manufacturing, logistics, campus, and port environments)
- Wireless Internet Service Providers (WISPs) using CBRS for fixed wireless access
- CBSD (Citizens Broadband Radio Service Device) test and compliance benches
- Mobile network operator offloading onto CBRS spectrum
- General radio scanners, receivers, and spectrum analyzers operating in this range
SPECIFICATIONS
Passband: 3625 +/- 75 MHz
Frequency Typical Attenuation
10 MHz - 3200 MHz > 27 dB
4000 MHz - 6000 MHz > 25 dB
NOTES
- The filter uses SMA-F PCB edge mount connectors.
- Maximum RF input signal Level: +24 dBm
- Max DC voltage 3 VDC
