COFDM Dual-Channel Frequency Down Converter – Compact High-Reliability RF Frequency Shifter
Оглавление
Обзор
The COFDM Dual-Channel Down Converter is a high-performance RF frequency shifter designed for compact, надежный, and precise frequency conversion. Featuring dual conversion channels, it supports a wide range of input frequencies and provides stable, low-noise output signals suitable for digital TV, беспроводная передача видео, and advanced RF communication systems. Its small form factor of 66mm × 25mm × 12mm makes it ideal for applications requiring space efficiency without compromising performance. Built with high-stability TCXO oscillators and advanced filtering, the unit ensures excellent frequency accuracy and strong mirror suppression, meeting the demands of professional COFDM applications.
Особенности
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Dual-channel conversion for versatile RF applications.
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Wide input frequency ranges with built-in selectable filters: 1095–1100, 1190–1210, 1290–1310, 1390–1410, 1990–2010 MHz or custom options.
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Input level compatibility: -120 дБм до +10 дБм.
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Output frequency ranges: 775–810 MHz (depending on selected channel).
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Conversion gain: 20–30 дБ, ensuring strong signal amplification.
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High frequency accuracy: ≤ ±10 KHz using 0.5ppm temperature-compensated crystal oscillator (ТСХО).
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Excellent carrier-to-noise ratio: ≥ 52 дБ.
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Strong image rejection: ≥ 60 дБ.
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Flat in-band response: ≤ 0.5 dB over 8 Полоса пропускания МГц.
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Ultra-low phase noise: ≤ -85 dBc/Hz @ 10 КГц, ≤ -110 dBc/Hz @ 100 КГц, ≤ -130 dBc/Hz @ 1000 КГц.
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Compact SMA RF connectors and through-core power supply for easy integration.
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Operates at 3.3–5.5V with low current consumption (0.35–0.4A).
Технические характеристики
| Параметр | Спецификация |
|---|---|
| Conversion Channels | 2 |
| Input Frequency Range | 1095–1100, 1190–1210, 1290–1310, 1390–1410, 1990–2010 MHz (custom options available) |
| Входной уровень | -120 ~ 10 дБм |
| Диапазон выходной частоты | 775–810 MHz |
| Прибыль от конверсии | 20–30 дБ |
| Точность частоты | ≤ ±10 KHz |
| Carrier-to-Noise Ratio | ≥ 52 дБ |
| Отклонение изображения | ≥ 60 дБ |
| In-Band Flatness | ≤ 0.5 дБ (8 Полоса пропускания МГц) |
| Фазовый шум | ≤ -85 dBc/Hz @10 KHz; ≤ -110 dBc/Hz @100 KHz; ≤ -130 dBc/Hz @1000 KHz |
| РЧ-разъем | СМА |
| Источник питания | 3.3–5.5V via through-core capacitor, 0.35–0.4A |
| Габаритные размеры | 66 × 25 × 12 мм |
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Приложения
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Digital Terrestrial Television (DTT) transmission systems.
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Wireless video and HD signal down-conversion.
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COFDM-based UAV/drone video transmission.
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RF research and laboratory test setups.
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Communication infrastructure requiring compact and high-reliability frequency conversion.
Customized Options
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Custom input/output frequency ranges based on customer requirements.
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Adjustable gain settings for specific signal conditions.
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Alternate connector types (например, СМА, БНК) upon request.
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Special filtering options for high-interference environments.
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Tailored power supply configurations for integration with custom electronics.
Вопросы-Ответы
вопрос: Does your BDC frequency down converter with integrated amplifier support the full 2.0–2.4 GHz range with LO 1840 МГц?
А: Not completely. This dual-channel model BDC2179 includes an internal power amplifier, which limits its bandwidth capability. This amplifier cannot support a wide 400 MHz frequency range and is restricted to a maximum bandwidth of approximately 100 МГц. Как результат, тот BDC2179 only supports the following frequency bands: 2140 ± 50 МГц / 2155 ± 50 МГц / 2250 ± 50 МГц / 2350 ± 50 МГц.
If you require full coverage of the 2.0–2,4 ГГц диапазон, мы рекомендуем использовать наш single-channel model Vcan2016 (BDC2016). This model supports the entire 2000–2400 MHz frequency range. Однако, please note that the Vcan2016 is a single-channel устройство. If your COFDM receiver uses dual-channel diversity RF inputs, you will need to use two units to achieve the same functionality as a dual-channel solution.
Краткое содержание: BDC2179 (двухканальный): Limited frequency bands due to internal amplifier constraints; Vcan2016 / BDC2016 (single-channel): Full 2.0–2.4 GHz support; two units required for diversity systems.
вопрос: Can the down converter support 1985–2085 MHz frequency range?
А: The down converter supports different frequency configurations depending on the application requirements. Available frequency options include:
- Standard frequency range: 2010–2070 MHz (60 Полоса пропускания МГц)
- Extended frequency range option: 2002–2078 MHz (76 Полоса пропускания МГц)
- Alternative frequency range option: 2035–2105 MHz (70 Полоса пропускания МГц)
If you require a specific frequency range, please contact us before ordering. We will confirm the suitable configuration based on your system requirements.
1 квартал: What is the maximum input signal level this down converter can handle?
А1: The device supports an input range from -120 dBm up to +10 дБм.
Q2: Can I customize the output frequency?
А2: да, we offer customized frequency ranges beyond the standard 775–810 MHz output.
Q3: Насколько стабильно преобразование частоты?
А3: The unit uses a 0.5 ppm high-stability TCXO oscillator, providing a frequency accuracy of ±10 KHz.
Q4: Is the converter suitable for UAV video transmission?
A4: Абсолютно. Его компактный размер, dual-channel conversion, and low phase noise make it ideal for COFDM UAV applications.
Q5: What are the power requirements?
А5: It operates on 3.3–5.5V DC with a current of 0.35–0.4A, supplied through a through-core capacitor.
вопрос: Can I use the USB port on the COFDM receiver to power the 5V down converter?
А: да, this is possible. The down converter requires approximately 400 mA at 5V, while the USB port on our COFDM receiver can provide up to 500 мА of current. Поэтому, the receiver’s USB port is sufficient to power the device. You will need to use a USB-to-DC power cable to make the connection.
iVcan.com –
I have been using the COFDM Dual-Channel Down Converter in my wireless video transmission setup for several months, and it has exceeded all my expectations. The compact design made integration into my existing equipment effortless, while the high reliability and stable frequency conversion ensured crystal-clear signal quality without interruptions. The adjustable input ranges and low phase noise have significantly improved my system performance, and the dual-channel feature allows seamless operation across multiple frequencies. Общий, this down converter provides excellent value, combining precision, durability, and ease of use.