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| 型号： | 7IB40-X/TDX-P/P |
| 英文描述： | 7 SECTIONS - 7 SECTIONS, 30 MHz - 10000 MHz, BAND PASS FILTER |
| 文件页数： | 2/3页 |
| 文件大小： | 1679K |
| 代理商： | 7IB40-X/TDX-P/P |
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TM
Lumped Components, Microminiature Bandpass — IB Series
x
Attenuation:
These curves show the attenuation
normalized to the 3 dB bandwidth for filters
with 2-8 sections. The following formula is
used: 3 dB bandwidths from center
frequency =
Reject Frequency - Center Frequency
3 dB BW
Example:
Center Frequency = 500 MHz
3 dB Bandwidth = 60 MHz
Number of Sections = 5
Find the attenuation at 400 and 600 MHz by
substituting in the formula 3 dB bandwidths
from center frequency = 400-500 = -1.67 BW’s
60
and 3 dB bandwidths from center
frequency = 600-500 = +1.67 BW’s
60
From the 7 to 15 % curve we find the
attenuation in dB for a 5-section response -
1.67 BW’s from center frequency yields
60 dB, and +1.67 BW’s from center
frequency yields 34 dB.
x
For Bandwidths 3 to 7%
x
For Bandwidths 7 to 15%
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