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

Systems operating in this band often adopt TDD (Duplexing з тимчасовим поділом) і OFDM modulation, both of which impose strict requirements on RF front-end performance—especially power amplifiers.

У цій статті, 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 (Duplexing з тимчасовим поділом). To ensure optimal performance, could you please specify the P1dB and Linear Output Power at 1.4 ГГц, the RX/TX switching speed in microseconds, and the Noise Figure (NF) of the RX path? Додатково, 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. Огляд продукту

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

Key Features:

• Frequency Range: 1428–1468 MHz
• Architecture: 2T2R (2 Передавати / 2 Отримати)
• Output Power: 10W per channel
• Duplex Mode: TDD
• Modulation Support: OFDM
• Application: БПЛА, 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 дБм
• 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.

• Фігура шуму (NF): ≤ 2.5 дБ
• Maintains high signal integrity in weak signal conditions

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Efficient Power Consumption

Optimized for mobile and airborne platforms:

• Напруга живлення: 12V / 24V / 28V
• Споживання струму: ~2–4A @ 28V (max output)
• High efficiency reduces thermal stress

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Thermal Design for UAV Applications

• Призначений для passive cooling with heatsink
• Підходить для airflow-assisted environments (UAV flight)
• Компактний і легкий

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3. Інтеграція & Використання

RF Connections

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

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External PA Control

• Підтримує 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 (Рекомендовано)

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4. Типові програми

• 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

Параметр	специфікація
Frequency Range	1428 – 1468 МГц
Architecture	2T2R
Duplex Mode	TDD
модуляція	OFDM Compatible
Output Power	10W per channel

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2. Передавач (TX) Specifications

Параметр	Min	Типовий	Макс	одиниця
Output P1dB	40	41	42	дБм
Linear Output Power (OFDM)	34	35	37	дБм
посилення	30	32	35	дБ
Input Return Loss	–	10	–	дБ
Output Return Loss	–	10	–	дБ

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3. Приймач (RX) Specifications

Параметр	Min	Типовий	Макс	одиниця
посилення	10	15	20	дБ
Фігура шуму (NF)	–	2.2	2.8	дБ
Input Return Loss	–	10	–	дБ

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4. TDD Switching Performance

Параметр	специфікація
TX to RX Switching Time	≤ 5 µs
RX to TX Switching Time	≤ 5 µs

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5. Електричні характеристики

Параметр	специфікація
Напруга живлення	12V / 24V / 28V
Споживання струму	2–4A @ 28V
Power Consumption	~50–100W

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6. Механічний & Теплові

Параметр	специфікація
Спосіб охолодження	Passive (Heatsink)
توص推荐环境	Airflow-assisted (Використання БПЛА)
Монтаж	Aluminum chassis

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7. Інтерфейс керування

Параметр	специфікація
PA Enable	TTL / GPIO
TDD Control	External control signal
РЧ роз'єм	SMA / Custom

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8. Екологічний

Параметр	специфікація
Operating Temperature	-20°C до +60 °C
Storage Temperature	-40°C до +85 °C