РЧ понижающий преобразователь 3400–3600 МГц

Запрос спецификации клиента:

Частотный диапазон (РФ) 3400..3600 МГц
Maximum input power 1 мВт (0дБм)
Частотный диапазон (ЕСЛИ) 400..600 МГц
Noise figure @ 18 °C typ. 1.0 децибел
Gain @ 25 °С 40 децибел
Gain flatness 1.50 децибел
Image rejection typ. 47 децибел
LO frequency 3000 МГц
LO accuracy @ 18 °С +/- 20 кГц
LO frequency stability +/- 20 кГц
Phase noise @ 100 кГц -112 дБн / Гц
LO leakage to IF port typ. -58 дБм
LO leakage to RF port typ. -52 дБм
Напряжение питания +9 … +18 В постоянного тока
Current consumption typ. 180 мА
Operating case temperature range -20 … +55 °С
Input connector / impedance N-female, 50 Ом
Output connector / impedance N-female, 50 Ом
Case milled Aluminium, water resistant
Габаритные размеры (мм) 82 Икс 64 Икс 22
Вес 230 грамм

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Analysis of Customer Requirements

This set of parameters clearly describes a C-band to UHF-band frequency down converter, typically used in RF communication, телеметрия, or COFDM video transmission systems. Let’s break down what the customer is looking for and what this specification implies for practical applications.

1. Frequency Conversion Purpose:
   The input range of 3400–3600 MHz (РФ) and output range of 400–600 MHz (ЕСЛИ) indicates a fixed Local Oscillator (LO) в 3000 МГц. This means the converter shifts C-band signals down to a lower IF band, making them compatible with standard COFDM demodulators or SDR receivers.
2. Low Noise Design:
   А 1.0 dB noise figure is exceptional, ensuring minimal signal degradation — crucial for long-range links or weak-signal reception in surveillance, Беспилотник, or broadcast systems.
3. Stable Gain and Flatness:
   С 40 ДБ and only 1.5 dB flatness, the unit ensures consistent performance across the operating band. This helps maintain a reliable signal-to-noise ratio and simplifies subsequent amplification or demodulation stages.
4. High Image Rejection:
   В 47 dB image rejection level demonstrates well-designed filtering, which prevents unwanted mirror frequencies from distorting the IF output — a key advantage in narrowband digital systems.
5. Excellent LO Stability and Phase Noise:
   В ±20 kHz frequency stability и -112 dBc/Hz phase noise at 100 kHz offset show this converter is suitable for modern digital modulation schemes, включая COFDM, QPSK, or QAM, where phase noise directly impacts bit error rates.
6. Robust and Practical Design:
   В milled aluminum, water-resistant housing and wide -20 to +55°C operating range make this converter suitable for field deployment, including mobile command stations, UAV ground control, and outdoor repeater systems.
7. Power and Interface:
   Поддержка 9–18 VDC power input and typical 180 мА current draw, it’s compatible with common field power systems. В N-type 50Ω connectors ensure solid RF performance with minimal signal loss.

Приложения

• Long-range COFDM video receiver front-end
• UAV and drone ground control stations
• Wireless surveillance and telemetry
• C-band communication link monitoring
• Military and emergency communication systems

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Заключение

This specification suggests the customer needs a precision-engineered, low-noise RF down converter для C-band signal reception. It’s ideal for integration into COFDM receiver systems, broadband communication links, or UAV downlink setups where high sensitivity and stability are critical.

Such converters are often paired with high-performance COFDM demodulator modules to provide a complete long-range video or telemetry solution.

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