KR Electronics, Inc. KR Electronics www.krfilters.com General Description Features • 70 MHz Center Frequency • 40 MHz 0.35 Bandwidth • Flat Passband Group Delay • Surface mount • 50 Ω Source and Load KR 2818-2 is a 70 MHz bandpass filter. The filter has a minimum 0.35 dB bandwidth of 40 MHz. Passband group delay variation is less than 2.5 nsec. Other passband frequencies are available. Please consult the factory. Typical Performance Passband Amplitude & Group Delay Overall Response (0.5 dB/div and 2 nsec/div) (10 dB/div) 17 Oct 2008 12:27:35 CH2 CH4 S31 S31 LOG DEL .5 dB/ 2 ns/ 17 Oct 2008 12:28:11 REF 0 dB REF 24 ns CH1 S31 LOG 10 dB/ REF 0 dB Cor 2 C Smo C 4 START CENTER 70 . 000 000 MHz KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2008, KR Electronics, Inc. SPAN 40 . 000 000 1 . 000 000 MHz STOP 200 . 000 000 MHz MHz Web Email Phone Fax www.krfilters.com [email protected] (732) 636-1900 (732) 636-1982 Page 1 KR Electronics, Inc. www.krfilters.com KR Electronics 2818-2 Specifications Parameter Specification Filter type Bandpass Center Frequency Insertion Loss 70 MHz < 2 dB ( 1 dB typical) Attenuation at 50 MHz < 0.35 dB Attenuation at 90 MHz < 0.35 dB Attenuation at 21 MHz > 35 dB Attenuation at 118 MHz > 35 dB Group Delay Variation 50 to 90 MHz < 2.5 nsec 50 Ω Source and Load Physical Dimensions Notes: 1. Surface mount package — Metal cover, open frame 2. Dimensions in inches 3. Maximum reflow temperature 209° C for 10 seconds maximum 4. If boards are cleaned after installation, units must be completely dried KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2008, KR Electronics, Inc. Web Email Phone Fax www.krfilters.com [email protected] (732) 636-1900 (732) 636-1982 Page 2