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

Systems operating in this band often adopt TDD (Duplexage de la division du temps) et Modulation OFDM, both of which impose strict requirements on RF front-end performance—especially power amplifiers.

Dans cet article, 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 (Duplexage de la division du temps). Pour garantir des performances optimales, 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? En outre, 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. Présentation du produit

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

Principales caractéristiques:

• Gamme de fréquences: 1428–1468 MHz
• Architecture: 2T2hri (2 Transmettre / 2 Recevoir)
• Puissance de sortie: 10W par canal
• Mode duplex: TDD
• Prise en charge des modulations: OFDM
• Application: UAV, broadband wireless, systèmes de communication tactiques

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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
• 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.

• Figure Noise (NF): ≤ 2.5 dB
• Maintains high signal integrity in weak signal conditions

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Consommation d'énergie efficace

Optimized for mobile and airborne platforms:

• tension d'alimentation: 12V / 24V / 28V
• Consommation de courant: ~2–4A @ 28V (max output)
• High efficiency reduces thermal stress

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Thermal Design for UAV Applications

• Conçu pour passive cooling with heatsink
• Convient pour airflow-assisted environments (UAV flight)
• Compact et léger

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3. Intégration & Usage

RF Connections

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

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External PA Control

• Les soutiens 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 (conseillé)

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4. Applications typiques

• Liaisons de données drones
• L-band broadband systems
• Emergency communication networks
• Tactical radio systems
• Video transmission platforms

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Full Datasheet

1. Spécifications générales

Paramètre	spécification
Gamme de fréquences	1428 - 1468 MHz
Architecture	2T2hri
Mode duplex	TDD
Modulation	OFDM Compatible
Puissance de sortie	10W par canal

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2. Émetteur (TX) Caractéristiques

Paramètre	Min	Typique	Max	Unité
Output P1dB	40	41	42	dBm
Linear Output Power (OFDM)	34	35	37	dBm
Gain	30	32	35	dB
Input Return Loss	–	10	–	dB
Output Return Loss	–	10	–	dB

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3. Récepteur (RX) Caractéristiques

Paramètre	Min	Typique	Max	Unité
Gain	10	15	20	dB
Figure Noise (NF)	–	2.2	2.8	dB
Input Return Loss	–	10	–	dB

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4. TDD Switching Performance

Paramètre	spécification
TX to RX Switching Time	≤ 5 µs
RX to TX Switching Time	≤ 5 µs

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5. Spécifications électriques

Paramètre	spécification
tension d'alimentation	12V / 24V / 28V
Consommation de courant	2–4A @ 28V
Consommation d'énergie	~50–100W

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6. Mécanique & Thermique

Paramètre	spécification
Méthode de refroidissement	Passif (Heatsink)
توص推荐环境	Airflow-assisted (Utilisation de drones)
Montage	Aluminum chassis

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7. Interface de contrôle

Paramètre	spécification
PA Enable	Durée de vie / GPIO
TDD Control	External control signal
Connecteur RF	Lycée / Coutume

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8. Environnemental

Paramètre	spécification
Température de fonctionnement	-20° C à + 60 ° C
Température de stockage	-40°C à +85°C