As UAV communications, private LTE networks, and L-band broadband systems continue to evolve, 该 1.4 GHz频段 (1428–1468 MHz) has become increasingly important for reliable wireless links.

Systems operating in this band often adopt 时分双工 (时间分段的双工) 和 正交频分复用调制, both of which impose strict requirements on RF front-end performance—especially power amplifiers.

在本文中, we introduce a high-performance 2T2R Bi-Directional Power Amplifier (BDA) designed specifically for these demanding applications.

Here is a client inquiry

I am looking for a Bi-Directional Power Amplifier (BDA) compatible with a 1.4 GHz broadband system that utilizes OFDM modulation and TDD (时间分段的双工). To ensure optimal performance, could you please specify the P1dB and Linear Output Power at 1.4 千兆赫, the RX/TX switching speed in microseconds, and the Noise Figure (核因子) of the RX path? 此外, I would like to know the typical current consumption at maximum output, the required supply voltage, and whether the thermal design is suitable for passive cooling on a mobile UAV platform. My device is 1428-1468 mhz range. My device has two antenna out 10watts. How to use an on/off switch? Only connect ext. PA connection right Do you have a 2T2R device amplifier.

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1. 产品概述

这个 1.4 GHz Bi-Directional Amplifier (BDA) is engineered for high-linearity, dual-channel wireless systems.

主要特点:

• 频率范围: 1428–1468 MHz
• 建筑: 2T2R (2 发送 / 2 收到)
• 输出功率: 10每通道 W
• 双工模式: 时分双工
• 调制支持: OFDM
• 应用: 无人机, broadband wireless, 战术通信系统

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2. Why This Amplifier Matters

High Linearity for OFDM Signals

OFDM signals have a high peak-to-average ratio (辣椒), requiring amplifiers to operate in a highly linear region.

• P1dB: ≥ 40 dBm的
• Linear Output Power (OFDM): 34–37 dBm
• Ensures low EVM and minimal signal distortion

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Fast TDD Switching Performance

TDD systems require rapid switching between transmit and receive modes.

• RX/TX Switching Time: ≤ 5 µs
• Enables precise timing alignment and reduces packet loss

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Low Noise RX Path

Receiver sensitivity is critical in long-range communication.

• 噪声系数 (核因子): ≤ 2.5 分贝
• Maintains high signal integrity in weak signal conditions

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Efficient Power Consumption

Optimized for mobile and airborne platforms:

• 电源电压: 12V / 24V / 28V
• 目前的消费: ~2–4A @ 28V (max output)
• High efficiency reduces thermal stress

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Thermal Design for UAV Applications

• 专为 passive cooling with heatsink
• 适合于 airflow-assisted environments (UAV flight)
• 紧凑而轻巧

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3. 一体化 & 用法

RF Connections

• 2 × TX outputs
• 2 × RX inputs
• 50ω阻抗

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External PA Control

• 支持 TX Enable (PA_EN) control pin
• Allows fast switching and power management

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Power ON/OFF Options

1. DC Power Switch (Simple Method)
2. GPIO Enable Control (推荐的)

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4. 典型的应用

• 无人机数据链
• L-band broadband systems
• Emergency communication networks
• Tactical radio systems
• Video transmission platforms

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Full Datasheet

1. 一般规格

参数	规范
频率范围	1428 - 1468 兆赫
建筑	2T2R
双工模式	时分双工
调制	OFDM Compatible
输出功率	10每通道 W

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2. 发射机 (TX) 产品规格

参数	Min	典型	马克斯	单元
Output P1dB	40	41	42	dBm的
Linear Output Power (OFDM)	34	35	37	dBm的
获得	30	32	35	分贝
Input Return Loss	–	10	–	分贝
Output Return Loss	–	10	–	分贝

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3. 接收器 (RX) 产品规格

参数	Min	典型	马克斯	单元
获得	10	15	20	分贝
噪声系数 (核因子)	–	2.2	2.8	分贝
Input Return Loss	–	10	–	分贝

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4. TDD Switching Performance

参数	规范
TX to RX Switching Time	≤ 5 µs
RX to TX Switching Time	≤ 5 µs

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5. 电气规格

参数	规范
电源电压	12V / 24V / 28V
目前的消费	2–4A @ 28V
能量消耗	~50–100W

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6. 机械的 & 热的

参数	规范
冷却方法	被动的 (Heatsink)
توص推荐环境	Airflow-assisted (无人机使用)
安装	Aluminum chassis

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7. 控制接口

参数	规范
PA Enable	TTL / 通用输入输出接口
TDD Control	External control signal
射频连接器	SMA / 风俗

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8. 环境的

参数	规范
工作温度	-20°C 至 +60°C
储存温度	-40°C 至 +85°C