12.75 GHz-13.5GHz Ku Band LNB 高频头 降频器 低噪声下变频器 GARDINER
Original price was: ¥23,000.00.¥1.00Current price is: ¥1.00.
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Ku-Band LNB Core Technical Parameters
| Parameter | Specification | Remarks |
|---|---|---|
| Input Frequency | 12.75 GHz – 13.5 GHz | Extended Ku-band segment, suitable for high-throughput satellites |
| Local Oscillator (LO) Frequency | 11.8 GHz / 11.3 GHz (Mainstream) | 11.8 GHz for full 12.75–13.5 GHz band; 11.3 GHz for 12.75–13.0 GHz |
| Output Frequency | 950–2200 MHz (11.8 GHz LO) 1450–2200 MHz (11.3 GHz LO) |
Standard L-band, compatible with most receivers |
| Noise Figure (NF) | Typical 0.6–0.8 dB, max 1.0 dB | Communication-grade ≤0.6 dB for higher weak-signal sensitivity |
| LO Stability (PLL) | ±3 kHz–±10 kHz (room temp.) ±25 kHz (-40℃ to +60℃) |
Prevents frequency drift; preferred for professional applications |
| Conversion Gain | Typical 55–60 dB, min 52 dB, max 65 dB | Ensures signal is amplified to a processable level for the receiver |
| Gain Flatness | ≤3 dB (full band) | Reduces signal distortion and improves data transmission stability |
| Input / Output VSWR | Input ≤2.2:1; Output ≤2.0:1 | Minimizes reflection loss and optimizes signal matching |
| Phase Noise | @1 kHz: -70 dBc/Hz @10 kHz: -85 dBc/Hz @100 kHz: -95 dBc/Hz |
Affects carrier phase accuracy; stricter requirements for comms-grade |
| Output P1dB | ≥+5 dBm | Keeps nonlinear distortion under control |
| Polarization | Linear (V/H) / Circular | Selected via 13V/18V supply voltage |
| Power Supply | 12–24 VDC, current ≤300 mA | Compatible with standard satellite receiver power supply |
| Operating Temperature | -40℃ to +60℃ | Meets outdoor installation requirements |
| Output Interface | F-type (75 Ω, broadcast) / N-type (50 Ω, communications) | Choose based on system impedance |
Key Technical Features
- LO & Frequency Conversion
- LO 11.8 GHz: Full 12.75–13.5 GHz input to 950–2200 MHz output.
- LO 11.3 GHz: For 12.75–13.0 GHz input, output is 1450–1700 MHz.
- LO Control: Supports 22 kHz tone switching (dual-LO models) and 13V/18V polarization control.
- Noise & Linearity
- NF: Affects sensitivity; comms-grade LNBs target ≤0.6 dB.
- Phase Noise: Should be ≤-70 dBc/Hz @1 kHz to avoid carrier sync interference.
- Interference Resistance & Reliability
- 5G Filtering: Many models (e.g., from Shenzhen Huashi Digital, Sinporun) integrate filters to suppress 3.5/4.9 GHz 5G interference.
- Rugged Design: Features a wide operating temperature range and waterproof housing for harsh outdoor conditions.
Selection & Application Guide
- Application Matching
- Satcom / VSAT: Choose 11.8 GHz LO, NF ≤0.6 dB, and ±3 kHz PLL stability for high-speed data.
- Broadcast Reception: 11.3 GHz LO and NF ≤0.8 dB are sufficient, offering a lower cost.
- Interface & Impedance
- Use F-type connectors for 75 Ω systems and N-type for 50 Ω communication systems to prevent mismatch loss.
- Customization Options
- Dual-LO (11.3/11.8 GHz) and external 10 MHz reference inputs are available to achieve ±1 kHz stability.
Tel:+86 18688706870
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