Cable Low Pass Filter
RLC Electronics’ Cable Lowpass Filters are available in conformable (FCLPF Series) & semi-rigid cable styles (CLPF Series) that are built to your cutoff, rejection and mechanical specifications. Computer designed and advanced coaxial techniques ensure optimal performance in a minimum amount of space.
Specifications
CLPF–1–2–3–4 Semi-rigid-Series-
FCLPF–1–2–3-4 Conformable-Series
Cut-Off Frequency fc (MHz) |
Number of Sections (N) |
3 dB Point (Typical) |
30 dB Point (Typical) |
60 dB Point (Min) |
100 to 26,000 |
2 |
1.4 fc |
2.5 fc |
5.2 fc |
3 |
1.15 fc |
1.7 fc |
2.8 fc |
|
4 |
1.09 fc |
1.4 fc |
2.0 fc |
|
5 |
1.07 fc |
1.26 fc |
1.62 fc |
|
6 |
1.05 fc |
1.18 fc |
1.44 fc |
|
7 |
1.04 fc |
1.14 fc |
1.33 fc |
|
8 |
1.04 fc |
1.11 fc |
1.26 fc |
|
9 |
1.04 fc |
1.08 fc |
1.19 fc |
|
10 |
1.02 fc |
1.06 fc |
1.14 fc |
Pass Band VSWR: See table 2 Pass Band Insertion Loss: See table below Power Rating: 2 watts average Impedance: 50 ohms |
Connector Type: SMA Male Cable Diameter: .141, .086 Environment: MIL-E-5400, Class 1A except operating temperature range 55C to +85C |
To designate the filter desired use:
1: Cut-off frequency in MHz 2: Number of sections (N) |
3: Cable length (in inches accurate to .05 inches) 4: Cable diameter AC for .141, BC for .086. |
Example: CLPF-5000-5-6AC is a 5000 MHz cutoff, 5 section filter with a cable length of 6 inches, using a .141 diameter cable.
FCLPF-5000-5-6-BC is a 5000 MHz cutoff, 5 section filter with a cable length of 6 inches, using a conformable .086 diameter cable.
Outline Drawing |
Passband Response
Calculation Notes: Passband Insertion Loss (Max) = (Filter Loss Constant x N) + Cable Loss *VSWR 12.4 GHz to 18 GHz for more than 8 sections to be 1.8 + (0.05 x (N-7)) **VSWR 18 GHz to 26 GHz for more than 8 sections to be 2.0 + (0.05 x (N-7)) |
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