SMB3315 Satellite Modem Board

The SMB3315 Satellite Modem Board from ST Engineering iDirect is a compact, high-performance embedded modem designed for integration into advanced satellite communication systems. Built to support HTS (High Throughput Satellite) and VHTS networks, the SMB3315 delivers powerful performance in a small footprint, making it ideal for mobility, maritime, government, and enterprise applications.

At VSATplus, we provide the SMB3315 as part of our advanced satcom solutions—supporting OEMs, integrators, and operators with technical consultation, integration support, and global supply.

1. Product Overview

Modern satellite networks are moving toward:

• Higher throughput
• Flexible bandwidth allocation
• Mobility-driven use cases

Traditional standalone modems are often too large or rigid for embedded applications. The SMB3315 solves this by delivering carrier-class performance in a board-level form factor.

Key positioning:

• Embedded integration into terminals (COTM / COTP)
• Compact satellite communication systems
• High-efficiency HTS deployments

It supports both:

• iDirect Dialog platform
• iDirect Velocity platform

This allows seamless integration into existing satellite infrastructures.

2. Core Capabilities

2.1 Multi-Waveform Flexibility

One of the strongest differentiators of the SMB3315 is its ability to support multiple return technologies:

• ATDMA (Adaptive TDMA)
• MF-TDMA
• SCPC (Single Channel Per Carrier)
• Mx-DMA MRC (Multi-Dimensional Multiple Access)

This flexibility allows operators to:

• Optimize bandwidth usage
• Adapt to different network conditions
• Support both fixed and mobility scenarios

Mx-DMA MRC is particularly important as it combines:

• TDMA flexibility
• SCPC efficiency

Result: higher performance without sacrificing adaptability 

2.2 Wideband HTS Support

The SMB3315 is built for next-generation satellite networks.

Capabilities include:

• Forward channel up to 500 Msps (DVB-S2X)
• Support for HTS and VHTS spot beams
• High-throughput network scaling

This enables service providers to:

• Deploy large-scale networks
• Increase capacity without adding hardware
• Support bandwidth-intensive applications

2.3 High Throughput Performance

Despite its compact size, the SMB3315 delivers:

• Up to 150 Mbps downstream
• Up to 70 Mbps upstream 

This makes it suitable for:

• Cellular backhaul
• Enterprise connectivity
• Maritime broadband
• Government communications

2.4 Advanced Modulation & Efficiency

The modem supports:

• DVB-S2 / DVB-S2X
• Modulation up to 64APSK

Benefits:

• Higher spectral efficiency
• Reduced cost per bit
• Improved link performance

This is critical for operators working with expensive satellite bandwidth.

2.5 Mobility & Integration Features

The SMB3315 is specifically designed for mobility environments.

Key features:

• OpenAMIP support for antenna control
• GXT file support
• Compatibility with COTM (Communication On The Move) systems

This makes it ideal for:

• Land mobility
• Maritime vessels
• Defense vehicles

2.6 Embedded Acceleration Technologies

To improve performance over satellite links, the modem includes:

• TCP acceleration
• GTP acceleration (for cellular networks)
• Header compression

These features:

• Reduce latency impact
• Improve application performance
• Optimize bandwidth usage

2.7 Security Architecture

Security is built into the hardware:

• Optional AES-256 encryption
• Hardware authentication via ATMEL chip

This ensures:

• Secure communication
• Protection against unauthorized access
• Suitability for government and defense use

3. Technical Specifications

3.1 Waveforms & Modulation

3.2 Throughput

3.3 RF Interfaces

3.4 Networking & Interfaces

3.5 Power & Environmental

3.6 Physical

4. Applications

4.1 Mobility (Land, Maritime, Defense)

• Communication on the move (COTM)
• Fleet connectivity
• Tactical communications

4.2 Cellular Backhaul

• LTE / 5G backhaul via satellite
• Remote tower connectivity

4.3 Enterprise Networks

• Remote office connectivity
• Industrial site communication

4.4 Government & Defense

• Secure communications
• Mobile command systems

4.5 Broadcast & Media

• Mobile video transmission
• Field reporting

5. Key Advantages

1. Embedded Design

Perfect for integration into compact satellite terminals.

2. Multi-Waveform Flexibility

Supports multiple access technologies for optimized performance.

3. High Throughput

Delivers strong performance despite small form factor.

4. HTS Ready

Supports next-generation satellite networks.

5. Mobility Optimized

Designed for moving platforms and dynamic environments.

6. Low Power Consumption

Efficient operation for mobile and remote systems.

7. Strong Security

Built-in encryption and authentication features.

6. Why Order from VSATplus

The SMB3315 is not a plug-and-play product—it’s an integration component.

At VSATplus, we support you with:

• OEM and system integration consultation
• Platform compatibility guidance (Dialog / Velocity)
• Network design support
• Competitive pricing
• Global delivery
• After-sales technical support

We help you go from hardware to working system.

Conclusion

The SMB3315 Satellite Modem Board is a highly flexible, high-performance embedded modem designed for modern satellite communication systems. With support for DVB-S2X, multiple return technologies, HTS networks, and mobility applications, it enables operators and integrators to build efficient, scalable, and future-ready satellite solutions.

Its compact design, powerful capabilities, and integration flexibility make it a key component in next-generation satcom infrastructure.

For organizations looking to develop or deploy advanced satellite systems, VSATplus offers the SMB3315 with full technical support and global delivery—ready to power your embedded satellite communication solutions.