PRODUCTS
BDA (Bidirectional Amplifier)
- Anti-Drone System
- Signal Strength Telemetry System for Train Radio Signals.
- Intelligent Transmission list Management System
- Edge Handler (Remote Integrated Management System)
- Network Quality Management System
- Intelligent Connect Panel
- FM / DMB Repeater
- BDA (Bidirectional Amplifier)
- Smart Voice Recognition Emergency Bell
- Intelligent Station Integration Device
- LiFePO4 Battery System
- Dynamic Train Car-Number Indicator
- IOT Terminal
Application equipment
BDA (Bidirectional Amplifier)
System overview
A system that amplifies RF signals received from radio signal repeater or nearby amplifiers to radiate signals to a leakage coaxial cables and transmit signal and information status to adjacent line amplifiers.
System Configuration Diagram
BDA Block Diagram
Main Features
BDA (Bidirectional Amplifier)
- FM / DMB / Train Protection Signal Amplification
- Bi-directional Transmission of Train Protection Signal
- FM / DMB signal One-way Transmission
- Communication between BDA's
- Remote Management Function
Electrical characteristics
| Specification | FM standard | DMB standard | Train protection standard | |||
|---|---|---|---|---|---|---|
| In/Output Freq. | 88MHz ~ 108MHz | 174MHz ~ 216MHz | 440MHz ~ 465MHz | |||
| Input Power Level | -10 ~ -40dBm | -10 ~ -40dBm | -50 ~ -20dBm | |||
| Output Power Level | +30dBm/Total Max. | +30dBm/Total Max. | +30dBm/Total Max. | |||
| VSWR | INPUT ALL Band | 1.5:1 | INPUT ALL Band | 1.5:1 | INPUT ALL Band | 1.5:1 |
| Gain | 40 ± 1dB | 0 ~ 30dB | 40 ± 1dB | 0 ~ 30dB | 50 ± 1dB | 0 ~ 30dB |
| Insertion Loss | Bypass Mode | -6dB | Bypass Mode | -6dB | Bypass Mode | -6dB |
| Attenuations | ATT. 30dB (0.5dB step ± 1dB) |
ATT. 30dB (0.5dB step ± 1dB) |
ATT. 30dB (0.5dB step ± 1dB) |
|||
| ALC | 31dBm ± 1dB (input: -11dBm ± 1dB) |
31dBm ± 1dB (input: -11dBm ± 1dB) |
31dBm ± 1dB (input: -21dBm ± 1dB |
|||
| IMD | +30dBm/Total | 35dBc Min. | +30dBm/Total | 35dBc Min. | +30dBm/Total | 35dBc Min. |
| Hamonics | 2nd | -50dB | 2nd | -50dB | 2nd | -50dB |
| 3rd | -60dB | 3rd | -60dB | 3rd | -60dB | |
| NF | 88 ~ 108MHz | 12dB | 174 ~ 216MHz | 12dB | 440 ~ 465MHz | 13dB |
