KR Electronics, Inc. KR Electronics www.krfilters.com General Description KR 2838-50 is a 140 MHz group delay equalized bandpass filter. Features The filter has a passband from 115 MHz to 165 MHz. Other • 140 MHz Center Frequency passband frequencies are available. Please consult the factory. • Sharp Transition to Stopband • Group Delay Equalized • 50 Ω Source and Load Typical Performance Passband Amplitude & Group Delay Overall Response (1 dB/div and 5 nsec/div) (10 dB/div) 12 Jun 2008 17:48:01 CH1 CH3 S31 S31 LOG DEL 1 dB/ 5 ns/ REF 0 dB REF 45 ns 12 Jun 2008 17:48:26 CH2 S31 LOG 10 dB/ REF 0 dB Cor Smo Cor Cor CENTER CENTER 140 . 000 000 MHz KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2008, KR Electronics, Inc. SPAN 50 . 000 000 140 . 000 000 MHz SPAN 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 2838-50 Specifications Parameter Specification Filter type Bandpass Insertion Loss < 5 dB ( 3.5 dB typical ) Passband (< 2 dB) Passband Ripple 115 MHz to 165 MHz < 1 dB Passband Group Delay Ripple 120 MHz to 160 MHz < 4 nsec Attenuation at 104 MHz & 176 MHz > 40 dB Attenuation at 100 MHz & 180 MHz > 45 dB Source and Load 50 Ω Physical Dimensions Notes: 1. Surface mount package — Metal cover open frame 2. Dimensions in inches 3. Maximum reflow temperature is 230° C for 10 sec 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