KR Electronics, Inc.
KR Electronics, Inc.
General Description
KR Electronics part number 2977-SMA is a 485 MHz bandpass
filter. The filter has a 3 dB bandwidth of 40 MHz. Other center
frequencies and bandwidths available. Please consult the fac-
tory.
www.krfilters.com
Features
485 MHz Center Frequency
40 MHz, 3 dB Bandwidth
50
Source and Load
SMA Connectors
Typical Performance
Overall Response
(10 dB/div)
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2010, KR Electronics, Inc.
2977-SMA, 485 MHz Bandpass, Rev 0, August 23, 2010
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 1
KR Electronics, Inc.
KR Electronics
Typical Performance
www.krfilters.com
Passband Amplitude & Group Delay
(1 dB/div & 5 nsec/div)
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2010, KR Electronics, Inc.
2977-SMA, 485 MHz Bandpass, Rev 0, August 23, 2010
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 2
KR Electronics, Inc.
KR Electronics 2977-SMA
Specifications
Parameter
Filter type
Center Frequency
Insertion Loss
3 dB Bandwidth
20 dB Bandwidth
40 dB Bandwidth
Source and Load
Specification
Bandpass
485 MHz
4.5 dB max
40 MHz ± 4 MHz
69 MHz typical
117 MHz typical
50
www.krfilters.com
2.3 dB typical
Physical Dimensions
Notes:
1. Dimensions in inches
2. Rectangular case
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2010, KR Electronics, Inc.
2977-SMA, 485 MHz Bandpass, Rev 0, August 23, 2010
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 3
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