The Asartech FB1003 is a general-purpose lumped-element bandpass filter for narrowband applications around 1 GHz. Covering 950–1050 MHz, it is also suitable for harmonic filtering of fixed 1 GHz reference frequency sources.
The filter is housed in a compact aluminum enclosure with standard SMA input and output connectors. It combines a 100 MHz passband with rejection below 800 MHz and across the specified upper stopband.
Specifications:
| Dimensions | 39.25 × 16.7 × 11 mm |
| Passband | 950–1050 MHz |
| Insertion loss | 2.5 dB typical; 4 dB maximum |
| Power handling | 1 W maximum |
| Stopband attenuation | 60 dB minimum at DC–800 MHz; 35 dB minimum at 1200–3000 MHz |




