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Help CenterLNB Ku Band Lo 9.75GHz 10G 9375HICN-2 Dual Local Oscillators Simultaneous Ku Bands LNB
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|
Noise figure LO stability |
0.7 dB phase locked to external reference |
Spurious -band Out-band |
-60dBm max @room temp -55dBm max @over temp -40dBm max |
Phase noise |
-70dBc/Hz @ 1KHz -80dBc/ Hz @ 10 KHz |
LO leakage (Input) |
-50dBm max |
-90dBc/ Hz @ 100KHz |
Image rejection |
40dBc min |
|
Input VSWR |
2.2 : 1 |
DC voltage / current |
+13 to +20 V / 450mA |
Output VSWR |
2.0 : 1 |
Input waveguide |
WR-75 |
Conversion gain |
68dB typ.60dB min |
Output connector |
N-female/SMA/F |
Gain flatness |
±2 .5dB max/ ±0.75dB[Max.]@36MHz |
Dimension |
95.2 (L) x 51(W) x 41 .0(H) mm |
Output P1dB |
+5dBm min |
Weight |
485g |
External reference |
10 MHz, -5 to +5 dBm |
Operating temperature |
-40 to +70 °C |
RF input level |
-30dBm max |
Waterproof Rating |
IP67 |
Option-1 |
Option-2 |
|||
Sub-band |
Low-band |
High-band |
Low-band |
High-band |
RF freq. (GHz) |
10.95 - 11.70GHz |
12.25 - 12.75GHz |
10.95 - 11.70GHz |
11.70 - 12.75GHz |
LO freq. (GHz) |
10GHz |
11.3GHz |
10.00GHz |
10.75GHz |
IF freq. (MHz) |
950 - 1700MHz |
950 - 1450 MHz |
950 - 1700MHz |
950 - 2000MHz |
Ku-Band Dual-Band Block Downconverters: Enhancing Stability and Efficiency in Broadcasting & VSAT Systems
In broadcasting and VSAT (Very Small Aperture Terminal) communication systems, the stability and efficiency of signal transmission are mission-critical. High-frequency satellite signals must travel thousands of kilometers with precision, relying on sophisticated ground equipment to maintain integrity. Serving as a vital bridge in the RF chain, the Block Downconverter (BDC) converts these high-frequency signals into intermediate frequencies (IF), laying the groundwork for subsequent demodulation and decoding.
Recently, the GARDINER 9100HICN—a direct replacement for the Norsat 1108DHF-1—has demonstrated exceptional performance in multiple deployments. Designed specifically for the Ku-band, this device combines dual-band processing capabilities with ultra-low noise design, offering new possibilities for broadcast and VSAT operators.
Technological Breakthrough: Dual Local Oscillators & Simultaneous Bands
The unit operates across the full Ku-band spectrum (10.7–12.75 GHz) utilizing a dual local oscillator (LO) design (9.750 GHz and 10.750 GHz) for efficient frequency segmentation. Unlike conventional downconverters limited to single-band operation, the 9100HICN features Simultaneous-Bands technology. This allows the device to process two independent frequency bands concurrently.
For VSAT networks, this means a single site can track multiple satellites simultaneously or separate uplink and downlink channels within the same band, significantly enhancing network flexibility and resource utilization. Coupled with advanced Phase-Locked Loop (PLL) technology, the LO stability is maintained within ±10 kHz. This ensures high-precision output even in harsh outdoor environments characterized by extreme temperature fluctuations or mechanical vibration, effectively preventing signal distortion caused by frequency drift.
Performance Advantages: Low Noise, High Gain, Compact Design
In satellite communications, every decibel of noise directly impacts the signal-to-noise ratio (SNR). The 9100HICN boasts an industry-leading noise figure of only 0.7 dB, introducing virtually no additional interference. It also provides a robust gain of 60 dB, effectively compensating for transmission losses over long distances.
With dimensions of just 128.1 × 59 × 50 mm and weighing approximately 365 grams, its compact and lightweight form factor allows for seamless integration into antenna systems, rack enclosures, or mobile terminals. Whether deployed in an indoor broadcast center or a rugged outdoor station, it adapts quickly to existing communication architectures.
Application Scenarios: From Broadcast to Emergency Response
-
Satellite Broadcasting Stations: Efficiently converts Ku-band downlink signals into IF for stable program distribution.
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VSAT Broadband Networks: Supports multi-satellite communication and bidirectional data transmission through dual-band parallel processing, increasing link redundancy and anti-interference capabilities.
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Emergency & Private Networks: Its lightweight design is ideal for vehicular, maritime, and temporary field stations, ensuring rapid communication recovery during emergencies.
Signal Assurance & Maintenance Recommendations
Frequency stability is the lifeline of any downconverter. The 9100HICN utilizes high-precision crystal oscillators and temperature compensation circuits to ensure long-term frequency consistency. For optimal performance, operators should:
-
Regularly inspect the WR75 and Type-N connectors to prevent signal attenuation due to poor contact.
-
Monitor device thermal management to ensure operation within the specified temperature range.
-
Utilize the original shock-proof packaging during transportation to minimize physical damage risks.
Conclusion
As satellite communications evolve toward higher frequencies and greater capacity, high-performance yet flexible downconverters like the GARDINER 9100HICN are becoming critical nodes in modern infrastructure. By enhancing transmission efficiency and stability, it provides reliable support for diverse deployment scenarios in both commercial broadcasting and mission-critical VSAT operations.
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