FDD Radio Frequency Amplifier

FDD Radio Frequency Amplifier

Overview

The FDD Radio Frequency Amplifier is a professional-grade RF amplification solution designed for Frequency Division Duplex (FDD) wireless communication systems. It supports simultaneous transmission and reception on separate frequency bands, delivering high output power on the TX path and low-noise, high-linearity amplification on the RX path.

This amplifier is engineered for custom frequency requirements, making it ideal for applications where standard off-the-shelf RF amplifiers cannot meet system-level performance, isolation, or integration demands. It is widely used in COFDM data links, UAV communication systems, ground stations, and other professional wireless platforms.

Features

• Supports FDD operation with simultaneous TX and RX
• Customizable TX and RX frequency bands
• High TX output power with excellent linearity
• Low-noise RX amplification for improved receiver sensitivity
• Optimized TX/RX isolation for FDD systems
• Compatible with wideband digital modulations (COFDM, DVB-T/T2, QAM, QPSK)
• Compact module or enclosed design options
• Built-in protection (VSWR, over-temperature, over-current)
• Suitable for continuous or burst transmission modes

Specifications (Customizable)

Specifications below are typical values and can be customized based on project requirements.

TX (Transmit) Path

• Frequency Range: 300–2500 MHz (customizable / segmented)
• Output Power: 1W / 2W / 5W / 10W (optional)
• Gain: 30–50 dB (typ.)
• Linearity: Optimized for wideband digital modulation
• Harmonics & Spurious: Meets system-level emission requirements

RX (Receive) Path

• Frequency Range: 300–860 MHz (customizable)
• Noise Figure: Low NF design
• Gain: 15–30 dB (typ.)
• High input linearity to prevent desensitization

General

• Operating Mode: FDD (Frequency Division Duplex)
• Input / Output Impedance: 50 Ω
• RF Interface: SMA / MMCX / Custom
• Power Supply: DC input (customizable)
• Operating Temperature: Industrial grade

Applications

The FDD Radio Frequency Amplifier is suitable for a wide range of professional and industrial wireless applications, including:

• UAV and drone data links
• COFDM video transmission systems
• Ground control stations
• Public safety and emergency communication
• Tactical and military radio systems
• Fixed wireless access and private networks
• Mobile and portable radio terminals

Customization Options

To ensure optimal performance, the amplifier can be customized for:

• Specific TX/RX frequency plans
• Output power levels
• Modulation and linearity requirements
• Duplexer or external filter integration
• Mechanical form factor (board-level or enclosure)
• Thermal design and power management

Other Common Custom Frequency Options

Frequency	Power
500-800 Mhz	20W	Single channel amplifier
800-2200 Mhz	20W	Single channel amplifier
800-1200 Mhz	20W	Single channel amplifier
1500-2200 Mhz	20W	Single channel amplifier
500-800 Mhz	50W	Single channel amplifier
800-2200 Mhz	50W	Single channel amplifier
800-1200 Mhz	50W	Single channel amplifier
1500-2200 Mhz	50W	Single channel amplifier

Early specification confirmation allows faster development and better system optimization.

FAQ

Q1: Can this FDD radio frequency amplifier support very wide TX frequency ranges?

Yes. However, extremely wide TX ranges (such as 300–2500 MHz) are typically implemented using segmented frequency designs to ensure stable gain, efficiency, and linearity.

Q2: Is the RX path protected from TX leakage?

Yes. The design includes optimized TX/RX isolation and supports external or integrated duplexers to protect the RX LNA from high TX power.

Q3: Can the amplifier work with COFDM or DVB-T/T2 signals?

Yes. The amplifier is designed to support wideband digital modulation schemes with good linearity and spectral performance.

Q4: Is this a standard product or a custom solution?

This is primarily a customizable product platform. Frequency bands, power levels, and interfaces can be tailored to your application.

Q5: What is the typical lead time?

Typical sample lead time is 4–8 weeks, depending on frequency range and performance requirements.

Conclusion

The FDD Radio Frequency Amplifier provides a flexible, high-performance solution for modern FDD wireless systems. With customizable frequency support, professional RF design, and fast development cycles, it is an ideal choice for OEMs and system integrators requiring reliable TX/RX amplification beyond standard RF products.