Single Dual Band Ka Band 18.2‑21.2GHz LNB Low Noise Block for Satellite Application
ZD-LNB-18.2/21.2G
This robust single dual band Ka Band LNB Low Noise Block is purpose‑built for professional satellite application , covering 18.2‑21.2 GHz input frequency range. It adopts PLL technology to achieve ±1 ppm LO stability, with optional external reference input available for higher‑precision system integration. Dual‑band models realize band switching via 12‑15 VDC and 16‑24 VDC voltage control. The noise figure is 1.5 dB‑1.6 dB depending on operating bands, paired with 55‑65 dB conversion gain. It delivers minimum 10 dBm output P‑1dB (15 dBm typical), featuring low phase‑noise performance exceeding IESS308/309 standards and optimized linearity for high‑order modulation. Rated IP65, it works reliably at ‑40℃ to +60℃ under condensing humidity. Powered by 12‑24 VDC through IF line with 5 W consumption, equipped with WR42 grooved input and N‑type female output, suitable for maritime, 5G backhaul, SNG vehicle and various VSAT terminals.
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Designed for demanding ground satellite communication projects, this high‑performance LNB satellite belongs to professional low noise block converters operating within the ka band frequency spectrum. Supporting single‑band and voltage‑controlled dual‑band modes across 18.2‑21.2 GHz, it applies PLL architecture to deliver ±1 ppm internal LO stability, and optional external reference input is offered for high‑precision system deployment. This ka band unit features noise figure from 1.5 dB to 1.6 dB according to selected bands, alongside adjustable conversion gain of 55‑65 dB. As one of reliable low noise block converters, it provides minimum 10 dBm output P‑1dB with 15 dBm typical value, low phase‑noise exceeding IESS308/309 requirements and optimized linearity for high‑order modulation and high‑data‑rate transmission. Built‑in IP65 protection, this durable LNB satellite runs steadily from ‑40℃ to +60℃ under condensing humidity. It draws 5 W power via 12‑24 VDC IF supply, fitted with WR42 grooved input and N‑type female output interface, perfectly suited for maritime, 5G backhaul, SNG vehicle and fixed, portable, transportable VSAT satellite terminals.
| Input Frequency (Single-band) | LO: 17.25 GHz Band 1: 18.20-19.20 GHz; LO: 18.25 GHz Band 2: 19.20-20.20 GHz; LO: 19.25 GHz Band 3: 20.20-21.20 GHz |
| Input Frequency (Dual-band) | LO: 17.25/18.25 GHz Band 4: 18.20-19.20 & 19.20- 20.20 GHz; LO: 18.25/19.25 GHz Band 5: 19.20-20.20 & 20.20-2 1.20 GHz; |
| Output Frequency | 950-1950 MHz |
| Noise Figure | 1.5 dB (RF at band 1, 2, 4); 1.6 dB (RF at band 3,5) |
| LO Stability | Internal reference (+/- 1 ppm); External reference (optional) |
| LO Leakage Level (IF connector) | -30 dBm max. |
| LO Leakage Level (RF connector) | -60 dBm max. |
| Conversion Gain | 55 to 65 dB |
| Output P-1dB | 10 dBm min. 15 dBm typ. |
| Phase Noise @1 KHz | -75 dBc/Hz |
| Phase Noise @10 KHz | -85 dBc/Hz |
| Phase Noise @100 KHz | -95 dBc/Hz |
| Image Rejection | 30 dBc min. |
| Output Spurious | -50 dBc max. |
| Input Power(Single-Band) | 12-24 VDC via IFL connector |
| Input Power (Dual-band, optional) | 12-15 VDC, L-band; 16-24 VDC, H-band |
| Power Consumption | 5 W |
| Input Interface | WR42 (Grooved) |
| Input VSWR | 2.5:1 |
| Output Interface | N-type female |
| Output VSWR | 2.0:1 |
| Size | 133*60*30mm |
| Weight | 0.42kg |
| Operating Temperature | -40to +60 ℃ |
| Humidity | 0-100% (condensing) |
| Water-proof Class | IP65 |
