B148QF0S_15 DILABS | Alldatasheet
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Center Frequency 15000 MHz Passband 12000 - 18000 MHz Insertion Loss (@Fc) 3.1 dB @ 25°C 3.6 dB -40°C to +85°C VSWR 1.67:1 12000 MHz to 18000 MHz* Rejection 40 dB dc to 7600 MHz 30 dB 22500 MHz to 25000 MHz Usable Temp Range -55 to +125 degree C *50 Ohm System Mechanical Footprint LxW 0.550 x 0.150 inch [13.97 x 3.81] mm Height 0.098 [2.49] Inch [mm] Frequency Response Catalog specifications subject to change without notice ▪ Small Size B148QF0S Electrical Specifications 12 to 18 GHz Bandpass Filter ▪ Fully Shielded Component ▪ Frequency Stable over Temperature -55°C to +125°C Surface mount, fully shielded, thin film filter designed for use on PCB 8- 12 mils thick with permitivity of 3.0-3.8. Applications include Ku-Band, Radar and Military Communications. -85 -80 -75 -70 -65 -60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 1000 2600 4200 5800 7400 9000 10600 12200 13800 15400 17000 18600 20200 21800 23400 25000 Magnitude in dB Frequency in MHz Typrical Performance 1of3 B148QF0S May 2015 Revision B
-80 -70 -60 -50 -40 -30 -20 -10 1000 5000 9000 13000 17000 21000 25000 Magnitude in dB Frequency in MHz Wide Band Performance 0.1 0.2 0.3 0.4 0.5 0.6 0.7 11500 13500 15500 17500 19500 Group Delay (ns) Frequency (MHz) Group Delay -60 -50 -40 -30 -20 -10 8000 10000 12000 14000 16000 18000 20000 22000 Magnitude in dB Frequency in MHz Narrow Band Performance 11000 13000 15000 17000 19000 Magnitude in dB Frequency in MHz Passband Response 2of3 B148QF0S May 2015 Revision B
PCB ground pattern length and width can be 0.002-0.003 inches larger than filter footprint. Dimensions of filter launch and PCB launch pattern should be closely matched. It is suggested that PCB ground metal be pulled back from RF I/O trace to account for component alignment tolerance. Ground via depth and spacing should be set so as not to create any resonances at the frequency of operation. Reference SMT Filter Mounting application note for additional mounting information. 3of3 B148QF0S May 2015 Revision B