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Features:
High-Power Dual-Band TDD Platform – Supports B38 (2570–2620MHz) and B40 (2300–2400MHz) with 47±1dBm (50W) output, purpose-built for 4G TDD macro-cell gap filling and outdoor coverage extension.
Multi-Module Parallel Architecture – Designed for dual-amplifier configurations with synchronized 5V, GND, and TXC lines, enabling scalable 2×50W MIMO or carrier-aggregated deployments without external combiner networks.
Pre-Distortion for Ultra-Low Distortion – Built-in DPD (suffix -2) achieves ≤3% EVM and ≤-45dBc ACPR at 10.0dB PAPR, ensuring clean amplification of 64QAM and high-order LTE waveforms.
High-Gain Bidirectional Amplification – Provides 53±2dB downlink gain and 25±2dB uplink gain with ≤3dB noise figure, extending coverage range in high-loss feeder and distributed antenna systems.
Intelligent VSWR Foldback Protection – Automatically reduces output to 3W upon antenna mismatch, preventing PA damage while maintaining link connectivity; instant full-power recovery when VSWR normalizes.
Extended Thermal Margin for High-Power Operation – Hardware-based over-temperature shutdown at 95°C with auto-recovery at 75°C, providing critical headroom for 50W continuous operation in sealed outdoor enclosures.
Comprehensive Fault Reporting – RS485 telemetry delivers real-time alerts for over-power (+2dB threshold), over-temperature, and VSWR anomalies; dual-module configurations report individual status for rapid fault isolation.
RS485 Full-Duplex Remote Management – 19200 baud interface enables gain/ATT adjustment, module on/off control, and real-time queries of forward power (±1dB accuracy over >20dB range) and temperature (±3℃ accuracy).
Precision Downlink Conditioning – Integrated ATT provides ≥25dB gain adjustment with ≤±1.5dB flatness across all attenuation steps; ALC extends ≥10dB dynamic range to stabilize output against input variations.
N-Type High-Power RF Interface – ANT port features N-Type connector for robust high-power signal transmission; SMA connectors used for auxiliary ports; housed in 190×115+150×100mm dual-module mechanical footprint.
Technical Specification:
Product Name:
1.TDD-B38-2.6G-50W-150100-28V-2
2.TDD-B40-2.3G-50W-150100-28V-2
Note：
1. Adopts dedicated 4G TDD standard software for power amplifiers.
2. Suffix "-2" in the model number indicates the module is equipped with pre-distortion function.
3. Powered by 28V DC power supply.
4. VSWR Alarm Protection: Once VSWR alarm is activated, the amplifier output power will
automatically drop to 3W; it will resume full normal power output immediately when VSWR returns to the normal range.
5. Over-temperature Protection: Alarm and power shutdown at +95℃; automatic restart at 75℃ .
Items: | Uplink (UL) & Downlink (UL) Specifications: |
Frequency Range: | 1. B38: a. UL:2570MHz -2620MHz b. DL:2570MHz -2620MHz 2. B40 a. UL:2300MHz -2400MHz b. DL:2300MHz -2400MHz |
Max Gain: | 1. UL:25±2dB 2. DL:53±2dB |
Maximum Output Power: | 1. UL:Uncontrolled 2. DL:47±1dBm |
Maximum Input Level: | 1. UL:NONE 2. DL:+10dBm |
Gain Adjustment Range: | 1. UL:NONE 2. DL:≥25dB |
ALC Range: | 1. UL:NONE 2. DL:≥10dB |
Gain Flatness: | 1. UL:NONE 2. DL a. ATT10dB： ≤±1dB b. ATT20dB： ≤±1dB c. ATT25dB： ≤±1.5dB |
In-Band Ripple: | ≤2.5dB |
Noise Figure: | 1. UL:≤3dB 2. DL:NONE |
Tx-Rx Isolation: | ≥55dBc |
ACPR: | ≤-45dBc |
EVM: | ≤3% (Peak-to-Average Power Ratio 10.0dB) |
VSWR: | ≤1.4 (Test condition: power on for testing after turning off the downlink power amplifier.) |
Operating Voltage: | 28V |
Operating Current: | ≤11A |
Baud Rate: | 19200 |
Working Temperature: | -40~+55℃ |
Over-Temperature Protection: | Alarm and shutdown at +95℃, resume operation at 75℃ |
Monitoring Functions: | 1. For the wiring diagram of the monitoring port, refer to the outline dimension drawing; RS485 interface communication a. Settings: switch, gain; b. Query: module status (including power amplifier status, over-power alarm, over-temperature alarm), power amplifier temperature, power amplifier ATT value, detected forward power; c. Over-power alarm: alarm when the power exceeds the maximum output power by +2dB; d. Over-temperature alarm: recommended threshold is +85℃; alarm is triggered when the detected temperature exceeds +85℃, and the power amplifier is turned off simultaneously, then turned on at +65℃; e. Power amplifier temperature detection: the detection range shall include but not be limited to -25℃~+85℃, with a detection accuracy of ±3℃; f. Forward power detection: the detection range shall be greater than 20dB, with a detection accuracy of less than ±1dB; |
Transmit-receive Wire Control Interface: | CMOS 3.3V |
Connectors: | ANT port: N-type connector; Other ports: SMA connectors |
Dual-amplifier Connection Requirement: | The 5V, GND and TXC lines of the two amplifiers shall be connected correspondingly |
Mechanical Dimensions： | 190115+150100mm |
Dimensional Drawing:
1.RX:LNA (uplink) switch, CMOS 3.3V high level turns it on, low level turns it off.
2.TX:PA (downlink) switch, CMOS 3.3V high level turns it on, low level turns it off.
Sample:
