مكان المنشأ:
الصين
اسم العلامة التجارية:
SETON
إصدار الشهادات:
CE, ISO, RoHS
رقم الموديل:
KA-Band Single LNB
Your Gateway to Reliable KA-Band Reception
Customizable frequency plans | Dual polarization ready | Engineered for stability from -30°C to +60°C
As satellite communication migrates to higher frequencies, KA-band (19.7–20.2 GHz) offers wider bandwidth and higher throughput — but demands tighter performance. This KA-Band Single LNBF downconverts the incoming KA-band signal to a usable L-band output (950–1450 MHz) with excellent phase noise stability, low noise figure, and flexible polarization support. It is an ideal building block for broadband VSAT, airborne connectivity, and high‑reliability trunking links.
KA‑band performance you can count on — in the field, on the move, or in extreme weather.
| Parameter | Specification |
|---|---|
| Input Frequency Range | 19.7GHz ~ 20.2GHz |
| Output Frequency Range | 950MHz ~ 1450MHz |
| LO frequency | 21.15GHz |
| Noise Figure | 1.2dB (Typ.)/ 1.8dB (Max.) |
| LO Initial Accuracy | 0.5MHz |
| LO Temperature Drift (-30~+60℃) | 0.75MHz |
| LO phase noise @ 1 KHz | -60dBc/Hz |
| LO phase noise @ 10 KHz | -80dBc/Hz |
| LO phase noise @ 100 KHz | -90dBc/Hz |
| Conversion Gain | 55dB~65dB/ 60dB (Typ.) |
| Gain Flatness | 2.5dB (Max.) |
| Gain Variation | 0.5dB/26 MHz |
| O/P 1dB Compression Point (P1 dB) | 3.0dBm (Min.) |
| Image-Rejection | -40dBc (Min.) |
| Crosstalk Isolation | 20dB (Min.) 22dB (Typ.) |
| O/P VSWR | 2.5:1 |
| Control Signals Ca L | 10.0V~14.0V |
| Control Signals Cb R | 16.0V~20.0V |
| DC-Power | 10~20V/150Vdc*mA (Max.) |
| Output Impedance | 75Ω (F-Type) |
| Working Temperature |
-30℃~+60℃ |
| Challenge | How This LNBF Solves It |
|---|---|
| High noise figure degrades link margin | 1.2 dB typ. NF keeps your C/N high — even with small antennas or long distances. |
| Frequency drift over temperature | ±0.75 MHz drift (-30 to +60°C) ensures reliable lock, from desert heat to freezing winters. |
| Poor phase noise affects high‑order modulation | -90 dBc/Hz @ 100 kHz phase noise supports 16APSK, 32APSK, and above. |
| Cross‑polarization interference | ≥20 dB isolation (22 dB typ.) keeps V/H or LHCP/RHCP signals clean. |
| Weak output compression point | ≥ +3.0 dBm P1dB gives you headroom before distortion. |
| Different regional frequency plans | Customizable input frequency range — tailored to your specific KA‑band allocation. |
KA‑Band Optimized – Built specifically for 19.7–20.2 GHz and adjacent bands (customizable).
Stable Under Temperature Extremes – Specified from -30°C to +60°C with tight LO drift.
Clean LO & Low NF – Preserves high‑order modulations and link budget.
Ready for Dual Polarization – Supports V/H or LHCP/RHCP via standard 13/18V switching.
Plug‑and‑Play Integration – Standard 75Ω F‑type output, single cable, no external bias tee needed.
Q: Can the input frequency be changed for my region?
Yes. While the standard version covers 19.7–20.2 GHz, we offer customizable frequency plans to match different KA‑band allocations worldwide.
Q: Does this LNBF support both linear and circular polarization?
Yes. It is available in two versions: V/H (linear) or LHCP/RHCP (circular) . Control is via standard DC voltage switching (10–14V / 16–20V).
Q: What is the real‑world advantage of the ±0.75 MHz temperature drift spec?
It means the LO stays stable across -30°C to +60°C, so your demodulator doesn't lose lock when the weather changes — critical for unattended or outdoor installations.
Q: Why is phase noise important for KA‑band?
KA‑band links often use high‑order modulations (16APSK, 32APSK) to maximize throughput. Low phase noise (-90 dBc/Hz @ 100 kHz) minimizes EVM degradation and allows higher data rates.
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