محول الترددات اللاسلكية لأسفل 3400-3600 ميجا هرتز

Customer Specification Request:

نطاق الترددات (الترددات اللاسلكية) 3400..3600 ميغاهيرتز
Maximum input power 1 ميغاواط (0ديسيبل)
نطاق الترددات (لو) 400..600 ميغاهيرتز
Noise figure @ 18 °C typ. 1.0 ديسيبل
Gain @ 25 درجة مئوية 40 ديسيبل
Gain flatness 1.50 ديسيبل
Image rejection typ. 47 ديسيبل
LO frequency 3000 ميغاهيرتز
LO accuracy @ 18 درجة مئوية +/- 20 كيلو هرتز
LO frequency stability +/- 20 كيلو هرتز
Phase noise @ 100 كيلو هرتز -112 DBC/هرتز
LO leakage to IF port typ. -58 ديسيبل
LO leakage to RF port typ. -52 ديسيبل
مصدر التيار +9 … +18 في العاصمة
Current consumption typ. 180 mA
Operating case temperature range -20 … +55 درجة مئوية
Input connector / impedance N-female, 50 أوم
Output connector / impedance N-female, 50 أوم
Case milled Aluminium, water resistant
الأبعاد (مم) 82 س 64 س 22
وزن 230 ز

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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, القياس عن بعد, 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 (الترددات اللاسلكية) and output range of 400–600 MHz (لو) indicates a fixed Local Oscillator (LO) في 3000 ميغاهيرتز. 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:
   أ 1.0 dB noise figure is exceptional, ensuring minimal signal degradation — crucial for long-range links or weak-signal reception in surveillance, الطائرات بدون طيار, or broadcast systems.
3. Stable Gain and Flatness:
   مع 40 dB gain 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:
   ال 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:
   ال ±20 kHz frequency stability و -112 dBc/Hz phase noise at 100 kHz offset show this converter is suitable for modern digital modulation schemes, مشتمل COFDM, QPSK, or QAM, where phase noise directly impacts bit error rates.
6. Robust and Practical Design:
   ال 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:
   دعم 9–18 VDC power input and typical 180 mA current draw, it’s compatible with common field power systems. ال N-type 50Ω connectors ensure solid RF performance with minimal signal loss.

التطبيقات

• 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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خاتمة

This specification suggests the customer needs a precision-engineered, low-noise RF down converter ل 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.

التعليمات