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Features:
TDD-optimized time-division duplex architecture – Designed specifically for TDD bands (B39/B40/B41) with shared uplink/downlink frequency paths, eliminating the need for separate Tx-Rx filters and reducing system complexity.
Low-power compact repeater solution – Delivers 35±1dBm downlink output power while consuming only ≤1.2A at 28V, ideal for indoor and small-coverage TDD network deployments.
External CMOS control for LNA and PA switching – Features discrete 3.3V CMOS logic inputs for independent uplink (RX/LNA) and downlink (TX/PA) enable/disable, enabling precise synchronization with TDD frame timing.
Comprehensive RS485 monitoring with fast baud rate – Supports 19200 baud communication for real-time queries of module status, forward power (±1dB accuracy over >20dB range), temperature (±3°C accuracy from -25°C to +85°C), and alarm conditions.
Built-in protection and fault reporting – Automatically shuts down at +85°C overtemperature (resumes at +65°C) and triggers over-power alerts when output exceeds +2dB above rated maximum, with active fault notification via RS485.
Technical Specification:
Product Name:
1. UZI-TDD-B39-1.9G-3W-109-28V
2. UZI-TDD-B40-2.3G-3W-109-28V
3. UZI-TDD-B41-3W-109-28V
Items: | Uplink (UL) & Downlink (UL) Specifications: |
Frequency Range: | 1. B39: a. UL:1880MHz -1920MHz b. DL:1880MHz -1920MHz 2. B40 a. UL:2300MHz -2400MHz b. DL:2300MHz -2400MHz 3. B41 a. UL:2496MHz -2690MHz b. DL:2496MHz -2690MHz |
Max Gain: | 1. UL:15±2dB 2. DL:40±2dB |
Maximum Output Power: | 1. UL:Uncontrolled 2. DL:35±1dBm |
Maximum Input Level: | 1. 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 |
EVM: | ≤5% (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: | ≤1.2A |
Baud Rate: | 19200 |
Working Temperature: | -40~+55℃ |
Over-Temperature Protection: | Alarm and shutdown at +85℃, resume operation at 65℃ |
Transmit-receive wire control interface: | CMOS3.3V |
Connecter: | 3 connectors in total; ANT: SMA connector; PA IN/LNA OUT: MCX connector |
Amplifier Dimensions: | 100*90*22 |
Monitoring Functions: | 1. For the wiring diagram of the monitoring port, refer to the outline dimension drawing; RS485 interface communication • Setting: switch, gain; • Query: module status (including power amplifier status, over-power alarm, over-temperature alarm), power amplifier temperature, power amplifier ATT value, detected forward power; • Over-power alarm: alarm triggered when power exceeds maximum output power by +2dB; • Over-temperature alarm: recommended threshold is +85℃; alarm triggered when detected temperature exceeds +85℃, with the power amplifier turned off simultaneously and turned on again at +65℃; • Power amplifier temperature detection: detection range shall include but not be limited to -25℃~+85℃, with a detection accuracy of ±3℃; • Forward power detection: detection range shall be greater than 20dB, with a detection accuracy of less than ±1dB; |
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:
