Draadloze fideo-oerdracht RF-frekwinsje Digitale Down Converter COFDM-oerdrachtfrekwinsje 2.4G nei 600Mhz lege BDC
Digital Down Converter
Draadloze fideo-oerdracht RF-frekwinsje Digitale Down Converter COFDM-oerdrachtfrekwinsje 2.4G oant 600Mhz leech
Ynhâldsopjefte
selling Punten
- Ynfier frekwinsjes út 24000 to 600MHz (Lower 1800Mhz)
- hege bânbreedte
- Low faze noise
- High-frekwinsje stabiliteit
spesifikaasje
RF Frequency Range: 2400 MHz
IF Frekwinsje Range: 600 MHz
Return Loss:-12 dB
frekwinsje Foarkommen: ± 10 PPM
image Rejection: 60 DBC
flatness: ± 0.5 dB (8MHz bânbreedte)
konverzje Gain: 25 dB
phase Noise (DBC / Hz)
DBC / Hz @ 1KHz ≤-80
DBC / Hz @ 10KHz ≤-90
DBC / Hz @ 100KHz ≤-100
Supply Voltage: 10~ 15V
Power Aktuele: 100 mA
Operating Temperatur Range: +25 ℃
Haven
RF IN: SMA-50K
IF OUT: SMA-50K
Macht + 12V: Stôk
Page: soldering lug
Noat
- De converter hoecht gjin fersterker mei leech lûd ta te foegjen oan 'e efterkant.
- werklike Test: sletten-loop test ûnder de frekwinsje fan 2.4GHz / bânbreedte 4MHz, de ûntfangende gefoelichheid kin berikke -105dBm.
- Input frekwinsje stipet 1 ~ 3GHz. (Wy kinne helpe oanpasse).
- Output frequency supports 300~700MHz. (Wy kinne stypje Oanpasse).
About the above video:
Our most popular products are wireless video transmitters and receivers. lykwols, some clients require modification of the transmission frequency to meet local legal demand, in which case the digital frequency up-down converter block comes in handy. One customer requested that we customize the RF frequency down converter for his 2.4G wireless video transmitter. So the input frequency is 2.4GHz, the output frequency is 600MHz, and the lowdown frequency is 1800MHz. We created the sample in accordance with his specifications. So I showed him a simple video that showed the 2.4G transmitter and 600Mhz receiver working correctly. If you have a similar requirement, lykas 1-3G frekwinsje ynfier en 300-700Mhz útfier, nim dan kontakt mei ús op foar in oanpaste oplossing.
FAQs
In RF-frekwinsjeblok downconverter (BDC) foar draadloze fideotransmitters is in apparaat dat in hege frekwinsjeberik kin konvertearje nei in leechfrekwinsjeberik.
Typysk brûkt oan 'e kant fan' e draadloze fideostjoerder. Bygelyks,
- Fan 5.8G nei 2.4G down converter
- Fan 2.4G nei 1.2G down converter
- Fan 1.2G nei 600Mhz down converter
This is due to the fact that wireless transmission frequencies in many countries or regions are restricted by local laws and regulations.
It is not permitted to use in a specific frequency range.
To change the operating frequency of the transmitter and receiver, down-conversion or up-conversion is required. Make sure the transmission frequency is in accordance with local laws and regulations.
There is also the case where the professional receiving frequency is fixed, bygelyks, between 300-800Mhz.
In order for the transmitter's frequency to be paired, the frequency of the 1.2G transmitter must be reduced.
All of this necessitates the use of a frequency downconverter for wireless video transmission.
Ja, our professional engineer replied, we can do it. And, before delivery, we will show you the test video.
Ja, our professional engineer confirms that we can re-design and modify some key components to do that. Wis, before delivery, we will show you the test video.
Thanks for your inquiry, I will check with our engineer.
Thanks for your inquiry. Wy kinne oanpasse foar jo.
Please tell us the specification details of your transmitter and receiver modules.
Fraach: We are interested in n.1 downconverter from 950-1500 Mhz to 350-850 Mhz and n.1 upconverter from 350-850 Mhz to 950-1500 MHz. Lokale oscillator 1800 MHz.
Ja, Here is our specification for your references.
Frequency Down Converer Block specification sheet
|
Ûnderdiel |
spesifikaasje |
|
input frequency |
950 MHz ～1550 MHz |
|
útfier frekwinsje |
350 MHz ～850 MHz |
|
Local frequency |
1800 MHz |
|
div |
500MHz |
|
noise Figure |
≤1.5dB |
|
winst |
25 dB |
|
Carrier leakage |
≤-20dBm |
|
Belt unevenness(8MHz) |
≤1.5dB |
|
IIP3: |
≥15dBm |
|
maximum input level |
-10DBM |
|
VSWR |
≤1.5 |
|
operation temperature |
-10～+60℃ |
|
voltage current |
12V/240mA |
|
RF ynterface |
SMA-50KFD |
|
grutte |
108*48*15mm |
|
Power supply mode |
Socket power supply |
Frequency Up Converer Block specification sheet
|
Ûnderdiel |
spesifikaasje |
|
input frequency |
350 MHz ～850 MHz |
|
útfier frekwinsje |
950 MHz ～1550 MHz |
|
Local frequency |
1800 MHz |
|
div |
500MHz |
|
noise Figure |
≤1.5dB |
|
winst |
25 dB |
|
Carrier leakage |
≤-20dBm |
|
Belt unevenness(8MHz) |
≤1.5dB |
|
IIP3: |
≥15dBm |
|
maximum input level |
-10DBM |
|
VSWR |
≤1.5 |
|
operation temperature |
-10～+60℃ |
|
voltage current |
12V/240mA |
|
RF ynterface |
SMA-50KFD |
|
grutte |
108*48*15mm |
|
Power supply mode |
Socket power supply |
Fraach: If a signal of -25 dbm enter, what level has the coverterd output?
Antwurd: 0 DBM
Wat is DDC
Yn digitale sinjaal ferwurking, in digitale down-converter (DDC) set in digitalisearre, band-beheind sinjaal nei in sinjaal mei legere frekwinsje by in legere sampling rate om de folgjende radiostadia te ferienfâldigjen. It proses behâldt alle ynformaasje yn 'e orizjinele sinjaal minder dat wat is ferlern nei Rounding flaters yn de wiskundige prosessen. De ynbring en output sinjalen kinne wêze echt of komplekse fan gebrûk. Faak it DDC set út de rauwe radio frekwinsje of tuskenlizzende frekwinsje omleech nei in kompleks Baseband sinjaal.
Boukunde
In DDC bestiet út trije subcomponents: in direkte digitale synthesizer (DDS), in lege-pass filter (LPF), and a down sampler (dat kin wurde yntegrearre yn de lege-pass filter). De DDS genereart in komplekse sinusoïde by de tuskenfrekwinsje (AS). Flere fan de tuskenlizzende frekwinsje mei de ynfier sinjaal skept bylden midden op 'e som en ferskil frekwinsje (dat folget út de frekwinsje-ferskowing eigenskippen fan de Fourier transform). The low-pass filters pass the difference (i.e.. Baseband) frekwinsje wylst it ôfwizen fan de som frekwinsje ôfbylding, resultearret yn in komplekse Baseband foarstelling fan de orizjinele sinjaal. Oannommen fan in ferstannige kar fan IF- en LPF-bânbreedte, it kompleks Baseband sinjaal is wiskundich itselde as de oarspronklike sinjaal. Yn syn nije foarm, it can readily be down-sampled and is more convenient to many DSP algorithms. Elk geskikt leechpassfilter kin brûkt wurde ynklusyf FIR, IIR, en CIC filters. De meast foarkommende kar is in FIR-filter foar lege bedraggen fan desimaasje (minder as tsien) or a CIC filter followed by an FIR filter for larger down-sampling ratios.
Fariaasjes op de DDC
Ferskate fariaasjes op 'e DDC binne nuttich, wêrûnder in protte dat ynput in feedback sinjaal yn de DDS. Dêr heart by:
- Decision-directed carrier recovery phase-locked loops in which the I and Q are compared to the nearest ideal constellation point of a PSK signal, en de dêrút flater signaal wurdt filtere en weromkeppele yn de DDS
- A Costas loop dêr't de ik en Q binne formannichfâldige en lege pass filtere as ûnderdiel fan in BPSK / QPSK carrier recovery loop
útfiering
DDCs binne meast útfierd yn de logika yn it fjild-programmierbaren poarte rigen of programma-spesifike yntegrale circuits. Wylst software ymplemintaasje binne ek mooglik, operaasjes yn 'e DDS, multipliers, and input stages of the low-pass filters all run at the sampling rate of the input data. Dizze gegevens wurdt ornaris nommen rjochtstreeks út analooch oan digitale converters (ADCs) sampling by tsientallen of hûnderten MHz. CORDIC is an alternative to the use of multipliers in the implementation of digital down converters.
Here is a client’s customized project, 1300~1400 Mhz input down converter to 300-400Mhz.
Picture transmission downconverter China Shenzhen leveransier， Frekwinsje oanpassing
namme: Ofbylding downconverter
model: LWDC-248258I
Nûmering: 1805001
RF +12V IF
Namme: RF Down Converter
Model: LWDC-3000I
Model: LWDC-1400
Frekwinsje ynfier 2G ~ 2.7G(2000~2700Mhz)
Leger: 1800MHz
Frekwinsje útfier: 200Mhz-700 Mhz
SN2405002
| MIN | TYPE | Lingte fan Video Kabel | ||
| Operating frekwinsje band (MHz) | 1300 | – | 1400 | Wurkfrekwinsje band (MHz) |
| Lokale oscillator (MHz) | 1000 | Lokale oscillator (MHz) | ||
| Intermediate frekwinsje (MHz) | 300 | – | 400 | Intermediate frekwinsje (MHz) |
| Konverzje winst Gain(dB) | 18 | 20 | 22 | Konverzje winst Gain(dB) |
| Gain Flatness (dB) | ±1 | – | Gain flatness(dB) | |
| Noise figuer (dB) | 1.5 | – | Noise Figure(dB) | |
| Port Standing Wave Ratio VSWR | 1.5 | 1.8 | 2 | Port Standing Wave Ratio VSWR |
| Port Impedance(ohm) | 50 | – | haven impedance(ohm) | |
| Maksimum ynfier macht (DBM) | -5 | Maksimum ynfierkrêft (dBm) | ||
| Maksimum útfier macht (DBM) | 15 | Maksimum útfierkrêft (dBm) | ||
| working voltage (V) | 10 | 12 | 15 | Bedriuwsspanning (V) |
| Operating current (mA) | 130 | 150 | 180 | Wurkstroom (mA) |
| Operating temperatuer (° C) | -25 | 55 | Bedriuwstemperatuer (°C) | |
| Storage temperatuer (° C) | -45 | 65 | Opslachtemperatuer (C) | |
| Ofmjittings mm (sûnder Anschlüsse) | 62x32x14mm | Ofmjittings mm (sûnder connector) |
Customize Frequency Specification Sheet Download
| Ûnderdiel | parameter |
| input frequency | 2100 MHz ～2500 MHz |
| útfier frekwinsje | 350 MHz ～750 MHz |
| Local frequency | 1750 MHz |
| noise Figure | ≤1.5dB |
| winst | 15 dB |
| Carrier leakage | ≤-20dBm |
| Belt unevenness(8MHz) | ≤1.5dB |
| IIP3: | ≥15dBm |
| maximum input level | 0DBM |
| VSWR | ≤1.5 |
| operation temperature | -10～+60℃ |
| voltage current | ≤12V/240mA |
| RF ynterface | N-50KFD |
| grutte | 108*48*22mm |
| Power supply mode | Online power supply |
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