Editorial Technical Reference

Satellite Modem

This page explains how Satellite Modem is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A device that modulates and demodulates digital signals for transmission and reception via satellite links.

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Product Specifications

Technical details and manufacturing context for Satellite Modem

Definition
A critical component within Satellite Communication Systems that converts digital data from user equipment into modulated radio frequency signals suitable for satellite transmission (uplink), and conversely demodulates received satellite signals (downlink) back into usable digital data. It serves as the interface between terrestrial networks and satellite transponders, enabling data, voice, and video communication over vast distances. The modem supports data rates from 64 kbps to 155 Mbps, with modulation schemes ranging from BPSK to 32APSK per DVB-S2. It operates in the L-band frequency range of 950–2150 MHz, with adjustable output power from 0 to 10 dBm and input power from -65 to -25 dBm. Frequency accuracy is maintained at ±0.1 ppm. Designed for rugged environments, it operates from -40°C to 85°C and 5% to 95% non-condensing humidity, with ingress protection ratings from IP54 to IP65. Power supply ranges from 9 to 36 V DC, with power consumption between 15 and 60 W. The unit is a 1U rack mount with dimensions of 44×220×300 mm and weighs between 2.5 and 4.5 kg. Materials include a printed circuit board, integrated circuits/ASICs, RF components (oscillators, amplifiers, filters), and an aluminum/steel enclosure. This directory entry provides reference ranges; actual values must be confirmed with the legal manufacturer for specific models and applications. Standards listed (e.g., DVB-S2, IEC 60068-2-1/2, IEC 60068-2-78, IEC 60529) are procurement references and do not imply certification or compliance.
Working Principle
The modem receives digital data streams from user equipment and applies modulation schemes such as QPSK, 8PSK, or 16APSK to encode the data onto a carrier wave for uplink transmission to a satellite. On the downlink, it receives the modulated carrier from the satellite, amplifies it, filters noise, and applies demodulation and error correction (e.g., using FEC like LDPC or Turbo codes) to recover the original digital data. The modem's frequency accuracy and power control ensure reliable link performance under varying conditions.
Common Materials
Printed Circuit Board (PCB), Integrated Circuits (ICs/ASICs), RF Components (Oscillators, Amplifiers, Filters), Aluminum/Steel Enclosure
Technical Parameters
ParameterTypical rangeNotes & selection driver
Data Rate64 kbps–155 Mbps bpsSelectable depending on modulation and bandwidth
Modulation SchemesBPSK–32APSKHigher order requires better link marginDVB-S2
Frequency Range950–2150 MHzL-band IF interface
Output Power0–10 dBmAdjustable in 0.1 dB steps
Input Power-65–-25 dBmWide dynamic range for fading
Frequency Accuracy±0.1 ppmStability over temperature
Operating Temperature-40–85 °CExtended range for outdoor unitsIEC 60068-2-1/2
Humidity5–95 % RHNon-condensingIEC 60068-2-78
Ingress ProtectionIP54–IP65For outdoor installationIEC 60529
Power Supply9–36 V DCWide input for telecom sites
Power Consumption15–60 WDepends on data rate and options
Dimensions44×220×300 mm1U rack mount
Weight2.5–4.5 kgDepending on power supply and interfaces

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Modulator
    Encodes incoming digital data onto a carrier wave using a specific modulation scheme for uplink transmission.
    Material: Integrated Circuits (ICs), PCB
  • Demodulator
    Extracts the original digital data from the received modulated carrier wave on the downlink.
    Material: Integrated Circuits (ICs), PCB
  • Forward Error Correction (FEC) Unit
    Adds redundant data to the transmitted signal and corrects errors in the received signal to improve link reliability.
    Material: Integrated Circuits (ICs/ASICs), PCB
  • RF Transceiver
    Transmits the modulated signal to the satellite uplink and receives the signal from the satellite downlink.
    Material: RF Amplifiers, Oscillators, Filters, PCB

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Satellite Modem.

Satcom Modem VSAT Modem

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Satellite Communication Systems
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Not applicable (atmospheric operation)
other spec: Data Rate: 1 Mbps to 1 Gbps, Frequency Range: L-band to Ka-band, Power Consumption: 10W to 200W
temperature: -40°C to +85°C (operational), -55°C to +95°C (storage)
Media Compatibility
✓ Satellite communication networks ✓ Maritime vessel communication systems ✓ Remote industrial monitoring installations
Unsuitable: High-vibration industrial environments without proper shock mounting
Sizing Data Required
  • Required data throughput (Mbps/Gbps)
  • Satellite frequency band compatibility (L, C, Ku, Ka-band)
  • Available power supply and consumption constraints

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal stress failure
Cause: Prolonged exposure to extreme temperature fluctuations causing solder joint fatigue, component delamination, and material degradation in the modem's internal circuitry and RF components.
Signal degradation/complete loss
Cause: Moisture ingress or corrosion in RF connectors and coaxial cables due to inadequate sealing, leading to impedance mismatch, increased VSWR, and eventual failure of the signal transmission path.
Maintenance Indicators
  • Intermittent or complete loss of signal lock despite clear line-of-sight to satellite, often accompanied by fluctuating signal strength readings on diagnostic tools.
  • Unusual audible humming or buzzing from the modem unit, or visible signs of overheating such as discoloration of the casing or hot air exhaust.
Engineering Tips
  • Implement regular thermal management checks: Ensure proper ventilation, clean air filters, and verify cooling fans are operational. Use thermal imaging during preventive maintenance to identify hot spots before failure.
  • Establish a rigorous sealing and connector maintenance protocol: Apply dielectric grease to RF connectors, inspect and replace gaskets/seals periodically, and use weatherproof enclosures in outdoor installations to prevent moisture ingress.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO/IEC 11801-1:2017 (Generic cabling systems) ANSI/TIA-568.2-D (Balanced twisted-pair telecommunications cabling) DIN EN 50173-1:2018 (Information technology - Generic cabling systems)

Quoted from the published standard.

Manufacturing Precision
  • Frequency Stability: +/- 0.5 ppm
  • Phase Noise: -110 dBc/Hz at 100 kHz offset
Quality Inspection
  • Bit Error Rate (BER) Test
  • Thermal Cycling Test

Manufacturers of Satellite Modem

Manufacturer profiles associated with Satellite Modem.

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Frequently Asked Questions

What modulation schemes does this satellite modem support?

According to the directory reference, the modem supports modulation schemes from BPSK to 32APSK, with typical schemes including QPSK, 8PSK, and 16APSK, as per DVB-S2. The actual supported schemes may vary by model; confirm with the manufacturer.

What is the operating temperature range?

The reference range is -40°C to 85°C, as per IEC 60068-2-1/2. This is for extended range outdoor units. Verify the specific model's rating with the manufacturer.

What power supply is required?

The modem accepts a DC power supply from 9 to 36 V DC, suitable for telecom sites. Power consumption ranges from 15 to 60 W depending on data rate and options. Check the model's specifications for exact requirements.

What is the ingress protection rating?

The reference range is IP54 to IP65, per IEC 60529, for outdoor installation. The actual rating depends on the enclosure and model; confirm with the manufacturer.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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