I-Wireless Video Transmission RF Frequency Digital Down Converter COFDM Dlulisa imvamisa 2.4G ukuya ku-600Mhz i-BDC ephansi

Digital Down Converter

I-Wireless Video Transmission RF Frequency Digital Down Converter COFDM Dlulisa imvamisa 2.4G ukuya ku-600Mhz low

Okuthengisa Amaphuzu

1. amaza wokufaka kusukela 24000 ukuze 600MHz (1800MHz Lower)
2. komkhawulokudonsa High
3. umsindo isigaba okuphansi
4. High-imvamisa ukuzinza

Ukucaciswa

RF Frequency Ibanga: 2400 MHz
UMA Frequency Ibanga: 600 MHz
Buyisela Ukulahlekelwa:-12 dB
imvamisa Ukunemba: ± 10 ppm
image Ukwenqabela: 60 DBC
Flatness: ± 0.5 dB (8MHz komkhawulokudonsa)
Ukuguqulwa Gain: 25 dB
Isigaba Noise (DBC / Hz)
DBC / Hz @ 1kHz ≤-80
DBC / Hz @ 10KHz ≤-90
DBC / Hz @ 100KHz ≤-100
Supply Voltage: 10~ 15V
amandla yamanje: 100 MA
Ithempelesha yokusebenzela Ibanga: +25 ℃

Port

RF IN: SMA-50K
UMA OUT: SMA-50K
Amandla + 12V: Stick
GND: Lug nokunamathisela ngomthofu

inothi

1. Isiguquli asidingi ukwengeza isikhulisi somsindo ophansi ngemuva.
2. Test yangempela: elivaliwe iluphu ukuhlolwa ngaphansi ukuvama 2.4GHz / komkhawulokudonsa 4MHz, ukuzwela ethola ongafinyelela -105dBm.
3. Wokufaka imvamisa isekela 1 ~ 3GHz. (Singasiza ukwenza ngendlela oyifisayo).
4. Ukuvama kokuphumayo kusekela 300~700MHz. (Seseke Yenza).

About the above video:

Our most popular products are wireless video transmitters and receivers. Nokho, 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, such as 1-3G frequency input and 300-700Mhz output, please contact us for a custom solution.

1. What is an RF frequency digital block-down converter (I-BDC)?

A RF frequency block downconverter (I-BDC) for wireless video transmitters is a device that can convert a high frequency range to a low frequency range.

Typically used on the wireless video transmitter side. Ngokwesibonelo,

• From 5.8G to 2.4G down converter
• From 2.4G to 1.2G down converter
• From 1.2G to 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, Ngokwesibonelo, 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.

2. My okokufaka imvamisa uhla kungadinga 2.0Ghz ukuze 2.7Ghz, need a downconverter to 200 Mhz to 900Mhz. Inzuzo ukuphenduka kwabo bekungaba kuhle kube 30db hhayi 25db. Ingabe lokhu kuyoba lula ngawe ukwenza?

Yebo, our professional engineer replied, we can do it. And, before delivery, we will show you the test video.

3. Can you make a down converter with LO1G? we need input 1300-1400 Mhz frequency and output 300-400 MHz.

Yebo, our professional engineer confirms that we can re-design and modify some key components to do that. Impela, before delivery, we will show you the test video.

4. Do you have or designed for MMDS applications? From 3400 -3600MHz, The S-Band is converted to the UHF range 400 ukuze 600 MHz, LO oscillator is 3000MHZ.

Thanks for your inquiry, I will check with our engineer.

5. What is RF output in dB? Can you make a down converter from 5.8 GHz to 3.1 GHz? Can you make a UP converter? From 1,25 GHz to 3.4 GHz?

Thanks for your inquiry. We can customize for you.

Please tell us the specification details of your transmitter and receiver modules.

6. Would you customize the frequency up-converter block and frequency down-converter block?

umbuzo: 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. I-oscillator yendawo 1800 MHz.

Yebo, Here is our specification for your references.

Frequency Down Converer Block specification sheet

Into	Ukucaciswa
input frequency	950 MHz ～1550 MHz
output frequency	350 MHz ～850 MHz
Local frequency	1800 MHz
SPAN	500MHz
Noise Figure	≤1.5dB
inzuzo	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
I-RF Interface	SMA-50KFD
usayizi	108*48*15mm
Power supply mode	Socket power supply

Frequency Up Converer Block specification sheet

Into	Ukucaciswa
input frequency	350 MHz ～850 MHz
output frequency	950 MHz ～1550 MHz
Local frequency	1800 MHz
SPAN	500MHz
Noise Figure	≤1.5dB
inzuzo	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
I-RF Interface	SMA-50KFD
usayizi	108*48*15mm
Power supply mode	Socket power supply

umbuzo: If a signal of -25 dbm enter, what level has the coverterd output?

impendulo: 0 dBm

7. I’m searching for a specific down converter, ukuze isetshenziswe nesixhumanisi sethu se-OFDM RF.

Ngisesha isiguquli esiqondile esithile, ukuze isetshenziswe nesixhumanisi sethu se-OFDM RF:

50ohms RF okokufaka: 1.435 ukuze 1.525 GHz

75 ohms IF output: noma iyiphi ibhendi yefrikhwensi, phakathi kuka-100Mhz no-900MHz

Imvamisa ye-LO ekhethwayo: 1846MHz

Inzuzo ephansi: ngo 28db

Inzuzo ephezulu: ngo 43db

I-DC inikwe amandla kusuka kumbobo yokukhiphayo ye-IF, 12-24vDC ububanzi

Yebo, we can customize it for you.

Kuyini DDC

Ngo digital signal processing, digital phansi-Converter (DDC) Uphendula ekhomphyutheni, isignali ye-band-limited kusiginali yefrikhwensi ephansi ngenani eliphansi lamasampula ukuze kwenziwe lula izigaba zomsakazo ezilandelayo. Inqubo kulondoloza lonke ulwazi ku Isignali ye-yokuqala ngaphansi kulokho okufanelekile ihluleke amaphutha ukuqoqa e izinqubo zezibalo. Isignali ye-input bese okukhipha kungaba amasampula yangempela noma eziyinkimbinkimbi. Ngokuvamile DDC iguqula kusukela imvamisa radio iluhlaza noma imvamisa Lesisemkhatsini phansi isiginali Baseband eziyinkimbinkimbi.

Architecture

A DDC siqukethe subcomponents ezintathu: synthesizer digital oqondile (DDS), isihlungi ongaphakeme-pass (LPF), and a down sampler (okungase kuhlanganiswe zibe lemifanekiso ongaphakeme-pass). I-DDS ikhiqiza i-sinusoid eyinkimbinkimbi kumafrikhwensi amaphakathi (UMA). Ukubuyabuyelela of imvamisa Lesisemkhatsini isignali okufakwayo kudala izithombe isikhungo isamba kanye umehluko imvamisa (okulandela kusukela kuzakhiwo zokushintsha imvamisa zoguquko lwe-Fourier). The low-pass filters pass the difference (okuyi. Baseband) imvamisa kuyilapho senqaba isithombe isamba imvamisa, kuphumele eziyinkimbinkimbi Baseband ukumelwa isignali yasekuqaleni. Ukuthatha ukukhetha okuhlakaniphile kwe-IF ne-LPF yomkhawulokudonsa, isignali Baseband eziyinkimbinkimbi izibalo okulingana isignali yasekuqaleni. Injalo entsha, it can readily be down-sampled and is more convenient to many DSP algorithms. Noma yisiphi isihlungi esifanelekile se-low-pass singasetshenziswa kuhlanganise ne-FIR, I-IIR, kanye nezihlungi ze-CIC. Inketho evame kakhulu isihlungi se-FIR samanani aphansi okunciphisa (engaphansana kweshumi) or a CIC filter followed by an FIR filter for larger down-sampling ratios.

Ukuhluka phezu DDC

Izinguquko eziningana ku-DDC ziwusizo, kuhlanganise neziningi ufake isignali impendulo phakathi DDS. Lezi zihlanganisa:

1. 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, kanye isignali iphutha okuholela is elicwengekileyo futhi wondla libuyiselwa DDS
2. A Costas iluphu lapho mina Q ziziningi futhi pass ongaphakeme ehlungiwe njengengxenye BPSK / QPSK yenethiwekhi yokutakula iluphu

Ukuqala kokusetshenziswa
DDCs zivame kakhulu ukusebenza ngo logic ensimini-ehlelwe esangweni afanayo noma izifunda eqondene nohlelo oludidiyelwe. Nakuba implementations isofthiwe futhi kungenzeka, imisebenzi ku DDS, iziphindaphinda, and input stages of the low-pass filters all run at the sampling rate of the input data. Le datha ngokuvamile ezithathwe ngokuqondile analog ukuba converters digital (ADCs) isampula kumashumi noma amakhulu we-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.

Ukudluliswa kwesithombe downconverter China Shenzhen umphakeli， Ukwenza ngokwezifiso imvamisa

igama: Isiguquli sesithombe
imodeli: LWDC-248258I
Ukufaka izinombolo: 1805001
I-RF +12V IF
Igama: I-RF Down Converter
Model: LWDC-3000I
Model: LWDC-1400
Okokufaka imvamisa 2G~2.7G(2000~ 2700Mhz)
Phansi: 1800MHz
Imvamisa okukhiphayo: 200I-Mhz-700Mhz
I-SN2405002

Customize Frequency Specification Sheet Download

OF 1750Mhz Down