COFDM Dual-Channel Frequency Down Converter – Compact High-Reliability RF Frequency Shifter
فهرست مطالب
نمای کلی
The COFDM Dual-Channel Down Converter is a high-performance RF frequency shifter designed for compact, قابل اعتماد, 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, انتقال تصویر بی سیم, 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.
امکانات
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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 dBm به +10 DBM به.
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Output frequency ranges: 775–810 MHz (depending on selected channel).
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Conversion gain: 20-30 دسی بل, ensuring strong signal amplification.
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High frequency accuracy: ≤ ±10 KHz using 0.5ppm temperature-compensated crystal oscillator (TCXO).
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Excellent carrier-to-noise ratio: ≥ 52 دسی بل.
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Strong image rejection: ≥ 60 دسی بل.
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Flat in-band response: ≤ 0.5 dB over 8 پهنای باند مگاهرتز.
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Ultra-low phase noise: ≤ -85 dBc/Hz @ 10 کیلوهرتز, ≤ -110 dBc/Hz @ 100 کیلوهرتز, ≤ -130 dBc/Hz @ 1000 کیلوهرتز.
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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).
مشخصات
| پارامتر | مشخصات |
|---|---|
| Conversion Channels | 2 |
| محدوده فرکانس ورودی | 1095–1100, 1190–1210, 1290–1310, 1390–1410, 1990–2010 MHz (custom options available) |
| سطح ورودی | -120 ~ 10 DBM به |
| Output Frequency Range | 775–810 MHz |
| Conversion Gain | 20-30 دسی بل |
| Frequency Accuracy | ≤ ±10 KHz |
| Carrier-to-Noise Ratio | ≥ 52 دسی بل |
| رد تصویر | ≥ 60 دسی بل |
| In-Band Flatness | ≤ 0.5 دسی بل (8 پهنای باند مگاهرتز) |
| Phase Noise | ≤ -85 dBc/Hz @10 KHz; ≤ -110 dBc/Hz @100 KHz; ≤ -130 dBc/Hz @1000 KHz |
| کانکتور RF | SMA |
| منبع تغذیه | 3.3–5.5V via through-core capacitor, 0.35–0.4A |
| ابعاد | 66 × 25 × 12 میلی متر |
نصب کنید
برنامه های کاربردی
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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 (به عنوان مثال, SMA, BNC) در صورت درخواست.
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Special filtering options for high-interference environments.
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Tailored power supply configurations for integration with custom electronics.
پرسش و پاسخ
س: Does your BDC frequency down converter with integrated amplifier support the full 2.0–2.4 GHz range with LO 1840 مگاهرتز?
آ: 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 مگاهرتز. در نتیجه, the BDC2179 only supports the following frequency bands: 2140 ± 50 مگاهرتز / 2155 ± 50 مگاهرتز / 2250 ± 50 مگاهرتز / 2350 ± 50 مگاهرتز.
If you require full coverage of the 2.0-2.4 گیگاهرتز محدوده, we recommend using our single-channel model Vcan2016 (BDC2016). This model supports the entire 2000–2400 MHz frequency range. با این حال, please note that the Vcan2016 is a single-channel دستگاه. 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.
خلاصه: BDC2179 (dual-channel): 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.
س: Can the down converter support 1985–2085 MHz frequency range?
آ: The down converter supports different frequency configurations depending on the application requirements. Available frequency options include:
- Standard frequency range: 2010–2070 MHz (60 پهنای باند مگاهرتز)
- Extended frequency range option: 2002–2078 MHz (76 پهنای باند مگاهرتز)
- Alternative frequency range option: 2035–2105 MHz (70 پهنای باند مگاهرتز)
If you require a specific frequency range, please contact us before ordering. We will confirm the suitable configuration based on your system requirements.
Q1: What is the maximum input signal level this down converter can handle?
A1: The device supports an input range from -120 dBm up to +10 DBM به.
Q2: Can I customize the output frequency?
A2: بله, we offer customized frequency ranges beyond the standard 775–810 MHz output.
Q3: تبدیل فرکانس چقدر پایدار است?
A3: 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: کاملا. اندازه جمع و جور آن, dual-channel conversion, and low phase noise make it ideal for COFDM UAV applications.
Q5: What are the power requirements?
A5: It operates on 3.3–5.5V DC with a current of 0.35–0.4A, supplied through a through-core capacitor.
س: Can I use the USB port on the COFDM receiver to power the 5V down converter?
آ: بله, 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 mA of current. بنابراین, 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. به طور کلی, this down converter provides excellent value, combining precision, دوام, and ease of use.