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

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

इस आलेख में, 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 (Time Division Duplexing). To ensure optimal performance, could you please specify the P1dB and Linear Output Power at 1.4 गीगा, the RX/TX switching speed in microseconds, and the Noise Figure (NF) of the RX path? इसके अतिरिक्त, 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. उत्पाद अवलोकन

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

प्रमुख विशेषताऐं:

• आवृत्ति सीमा: 1428–1468 MHz
• आर्किटेक्चर: 2T2R (2 संचारित / 2 प्राप्त करें)
• बिजली उत्पादन: 10प्रति चैनल डब्ल्यू
• डुप्लेक्स मोड: TDD
• Modulation Support: OFDM
• आवेदन: 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 (पीएपीआर), requiring amplifiers to operate in a highly linear region.

• P1dB: मैं 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: मैं 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.

• शोर का आंकड़ा (NF): मैं 2.5 डीबी
• Maintains high signal integrity in weak signal conditions

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Efficient Power Consumption

Optimized for mobile and airborne platforms:

• वोल्टेज आपूर्ति: 12वी / 24वी / 28वी
• वर्तमान खपत: ~2–4A @ 28V (max output)
• High efficiency reduces thermal stress

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Thermal Design for UAV Applications

• Designed for passive cooling with heatsink
• Suitable for airflow-assisted environments (UAV flight)
• Compact and lightweight

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3. Integration & प्रयोग

RF Connections

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

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External PA Control

• समर्थन 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 (सिफारिश की)

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4. विशिष्ट अनुप्रयोग

• 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

पैरामीटर	विशिष्टता
आवृत्ति सीमा	1428 - 1468 मेगाहर्ट्ज
आर्किटेक्चर	2T2R
डुप्लेक्स मोड	TDD
मॉड्यूलेशन	OFDM Compatible
बिजली उत्पादन	10प्रति चैनल डब्ल्यू

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2. ट्रांसमीटर (टेक्सास) विशेष विवरण

पैरामीटर	मिन	ठेठ	मैक्स	इकाई
Output P1dB	40	41	42	dBm
Linear Output Power (OFDM)	34	35	37	dBm
लाभ	30	32	35	डीबी
Input Return Loss	–	10	–	डीबी
Output Return Loss	–	10	–	डीबी

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3. रिसीवर (RX) विशेष विवरण

पैरामीटर	मिन	ठेठ	मैक्स	इकाई
लाभ	10	15	20	डीबी
शोर का आंकड़ा (NF)	–	2.2	2.8	डीबी
Input Return Loss	–	10	–	डीबी

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4. TDD Switching Performance

पैरामीटर	विशिष्टता
TX to RX Switching Time	मैं 5 µs
RX to TX Switching Time	मैं 5 µs

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5. विद्युत निर्दिष्टीकरण

पैरामीटर	विशिष्टता
वोल्टेज आपूर्ति	12वी / 24वी / 28वी
वर्तमान खपत	2–4A @ 28V
बिजली की खपत	~50–100W

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6. यांत्रिक & थर्मल

पैरामीटर	विशिष्टता
शीतलन विधि	Passive (Heatsink)
توص推荐环境	Airflow-assisted (यूएवी का उपयोग)
बढ़ते	Aluminum chassis

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7. नियंत्रण इंटरफ़ेस

पैरामीटर	विशिष्टता
PA Enable	टीटीएल / जीपीआईओ
TDD Control	External control signal
RF Connector	हाई स्कूल / Custom

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8. पर्यावरण

पैरामीटर	विशिष्टता
परिचालन तापमान	-20°C to +60°C
भंडारण तापमान	-40डिग्री सेल्सियस से +85 डिग्री सेल्सियस