DC-BLOCK-3-NMF-1
DC Block
Rev : B | Rev date : 03 May 2024
This DC Block is used to prevent the flow of direct current and low frequency current surges along the inner and outer conductors of a transmission line, while permitting the unimpeded flow of RF signals. Applications include the blocking of current surges in subway tunnels. The unit consists of a length of coaxial line with a series capacitor in both the center conductor and outer conductor to block the flow of low frequencies, while passing RF with negligible loss or reflections.
FEATURES / BENEFITS
• Multi-Band Frequency Range
• 3 kV High Voltage Rating
• Minimal RF Insertion Loss
• Very Low Passive IM
• RoHS Compliant
• High Reliability
• N male/female connector
General Specifications |
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| Product Type | | DC Block | | Techn. Application | | Indoor | | Number of Input Ports | | 1 | | Number of Output Ports | | 1 |
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Electrical Specifications |
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| Frequency Range | MHz | 80 - 3800 | | Impedance | Ohm | 50 | | Insertion Loss | dB | 0.25 @80 - 3800 MHz | | Max. VSWR / Return Loss, dB | VSWR/dB | 1.40/15.5 @80 - 100 MHz
1.30/17.7 @100 - 300 MHz
1.10/26.4 @300 - 1880 MHz
1.20/20.8 @1880 - 2700 MHz
1.25/19 @2700 - 3800 MHz | | Intermodulation (IM3) | | 155dBc, typ -160dBc (2x20W) | | Max. DC Blocking Voltage, KV | kV | 3 |
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Mechanical Specifications |
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| Connectors | | N | | Input Connector Type | | N male | | Output Connector Type | | N female |
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Temperature Specifications |
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| Temperature Range | °C (°F) | -40 to 55 (-40 to 131) |
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Testing and Environmental |
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| Environmental Class | | IP67 per EN60529 |
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Notes
- RF CW Power, max: 1500W @ 80MHz, 300W @1880MHz, 250W @ 2700MHz, 130W @3800MHz ((for VSWR=1,0 at sea level, ambient temperature 40°C)
- Blocking DC voltage for VSWR=1,0 at sea level, ambient temperature 20°C
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