आरएफ डाउन कन्वर्टर 3400-3600 मेगाहर्ट्ज

Customer Specification Request:

आवृत्ति सीमा (आरएफ) 3400..3600 मेगाहर्ट्ज
Maximum input power 1 मेगावाट (0डी बी एम)
आवृत्ति सीमा (अगर) 400..600 मेगाहर्ट्ज
Noise figure @ 18 °C typ. 1.0 डीबी
Gain @ 25 डिग्री सेल्सियस 40 डीबी
Gain flatness 1.50 डीबी
Image rejection typ. 47 डीबी
LO frequency 3000 मेगाहर्ट्ज
LO accuracy @ 18 डिग्री सेल्सियस +/- 20 kHz
LO frequency stability +/- 20 kHz
Phase noise @ 100 kHz -112 डीबीसी/हर्ट्ज
LO leakage to IF port typ. -58 डी बी एम
LO leakage to RF port typ. -52 डी बी एम
वोल्टेज आपूर्ति +9 … +18 डीसी में
Current consumption typ. 180 एमए
Operating case temperature range -20 … +55 डिग्री सेल्सियस
Input connector / impedance N-female, 50 ओम
Output connector / impedance N-female, 50 ओम
Case milled Aluminium, water resistant
आयाम (मिमी) 82 एक्स 64 एक्स 22
वजन 230 जी

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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, टेलीमेटरी, 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 (आरएफ) and output range of 400–600 MHz (अगर) indicates a fixed Local Oscillator (LO) पर 3000 मेगाहर्ट्ज. 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:
   ए 1.0 dB noise figure is exceptional, ensuring minimal signal degradation — crucial for long-range links or weak-signal reception in surveillance, यूएवी, or broadcast systems.
3. Stable Gain and Flatness:
   साथ 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:
   The 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:
   The ±20 kHz frequency stability तथा -112 dBc/Hz phase noise at 100 kHz offset show this converter is suitable for modern digital modulation schemes, शामिल सीओएफडीएम, QPSK, or QAM, where phase noise directly impacts bit error rates.
6. Robust and Practical Design:
   The 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:
   सहायक 9–18 VDC power input and typical 180 एमए current draw, it’s compatible with common field power systems. The N-type 50Ω connectors ensure solid RF performance with minimal signal loss.

अनुप्रयोग

• 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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निष्कर्ष

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

सामान्य प्रश्न