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

Systems operating in this band often adopt TDD (時分割二重化) そして OFDM modulation, both of which impose strict requirements on RF front-end performance—especially power amplifiers.

この記事では, 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 (時分割二重化). 最適なパフォーマンスを確保するには, could you please specify the P1dB and Linear Output Power at 1.4 GHz, the RX/TX switching speed in microseconds, and the Noise Figure (NF) of the RX path? さらに, 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. 製品概要

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

主な特長:

• 周波数範囲: 1428–1468 MHz
• 建築: 2T2R (2 送信 / 2 受け取る)
• 出力電力: 10W per channel
• Duplex Mode: TDD
• Modulation Support: OFDM
• 応用: UAV, broadband wireless, tactical communication systems

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2. Why This Amplifier Matters

High Linearity for OFDM Signals

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

• P1dB: ≥ 40 dBmの
• 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 マイクロ秒
• Enables precise timing alignment and reduces packet loss

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Low Noise RX Path

Receiver sensitivity is critical in long-range communication.

• 雑音指数 (NF): ≤ 2.5 dB
• Maintains high signal integrity in weak signal conditions

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Efficient Power Consumption

Optimized for mobile and airborne platforms:

• 供給電圧: 12V / 24V / 28V
• 消費電流: ~2–4A @ 28V (max output)
• High efficiency reduces thermal stress

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Thermal Design for UAV Applications

• のために設計されています passive cooling with heatsink
• に適しています airflow-assisted environments (UAV flight)
• Compact and lightweight

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3. 統合 & 使用法

RF Connections

• 2 × TX outputs
• 2 × RX inputs
• 50Ω impedance

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External PA Control

• サポート 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 (推奨)

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4. 代表的な用途

• UAV data links
• L-band broadband systems
• Emergency communication networks
• Tactical radio systems
• Video transmission platforms

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Full Datasheet

1. General Specifications

パラメータ	仕様
周波数範囲	1428 – 1468 メガヘルツ
建築	2T2R
Duplex Mode	TDD
変調	OFDM Compatible
出力電力	10W per channel

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2. トランスミッター (テキサス州) 仕様

パラメータ	Min	典型的な	マックス	ユニット
Output P1dB	40	41	42	dBmの
Linear Output Power (OFDM)	34	35	37	dBmの
得	30	32	35	dB
Input Return Loss	–	10	–	dB
Output Return Loss	–	10	–	dB

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3. 受信機 (RX) 仕様

パラメータ	Min	典型的な	マックス	ユニット
得	10	15	20	dB
雑音指数 (NF)	–	2.2	2.8	dB
Input Return Loss	–	10	–	dB

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4. TDD Switching Performance

パラメータ	仕様
TX to RX Switching Time	≤ 5 マイクロ秒
RX to TX Switching Time	≤ 5 マイクロ秒

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5. 電気仕様

パラメータ	仕様
供給電圧	12V / 24V / 28V
消費電流	2–4A @ 28V
消費電力	~50–100W

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6. 機械式 & 熱

パラメータ	仕様
冷却方法	Passive (Heatsink)
توص推荐环境	Airflow-assisted (無人航空機の使用)
取り付け	Aluminum chassis

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7. 制御インターフェース

パラメータ	仕様
PA Enable	TTL / GPIO
TDD Control	External control signal
RFコネクタ	SMA / カスタム

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8. 環境

パラメータ	仕様
動作温度	-20°C ～ +60°C
保管温度	-40°C ～ +85°C