Wireless Vhidhiyo Transmission RF Frequency Digital Down Converter COFDM Shandura frequency 2.4G kusvika 600Mhz yakaderera BDC

Digital Down Converter

Wireless Vhidhiyo Transmission RF Frequency Digital Down Converter COFDM Shandura frequency 2.4G kusvika 600Mhz yakaderera

kutengwa Points

1. Chiyamuro frequencies kubva 24000 kuti 600MHz (Lower 1800Mhz)
2. High bandwidth
3. Low danho ruzha
4. High-Frequency utsigo

Specification

RF Frequency Range: 2400 Mhz
KANA Frequency Range: 600 Mhz
Return Loss:-12 db
Frequency Akarurama: ± 10 ppm
Image Kuramba: 60 dBc
Flatness: ± 0.5 db (8MHz bandwidth)
Conversion Kuwana: 25 db
danho fuertes (dBc / Hz)
dBc / Hz @ 1KHz ≤-80
dBc / Hz @ 10KHz ≤-90
dBc / Hz @ 100KHz ≤-100
Supply Voltage: 10~ 15V
Power Current: 100 Ma
Uchishandisa Temperature Range: +25 ℃

poti

RF IN: SMA-50k
KANA OUT: SMA-50k
Power + 12V: rutanda
GND: pokunamatidza lug

chitsamba

1. Iyo inoshandura haidi kuwedzera yakaderera-ruzha amplifier kumucheto kumashure.
2. Actual Test: up-loop bvunzo pasi kakawanda 2.4GHz / bandwidth 4MHz, ari kugamuchira utetsa anogona kusvika -105dBm.
3. Chiyamuro maitikiro inotsigira 1 ~ 3GHz. (Tinogona kubatsira kugadzirisa).
4. Output frequency supports 300~700MHz. (Tinogona kutsigira gadzirisa).

About the above video:

Our most popular products are wireless video transmitters and receivers. zvisinei, 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 (BDC)?

A RF frequency block downconverter (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. Semuyenzaniso,

• 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, Semuyenzaniso, 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 chiyamuro Frequency siyana vaizofanira 2.0Ghz kuti 2.7Ghz, need a downconverter to 200 Mhz to 900Mhz. The Kutendeuka yakaipa kuti Zvakanakisa kuva 30db kwete 25db. Izvi zvingava nyore kuti aite?

Ehe, 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.

Ehe, our professional engineer confirms that we can re-design and modify some key components to do that. Chokwadi, 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 kuti 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. Tinogona kukugadzirira iwe.

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?

mubvunzo: 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. Local oscillator 1800 Mhz.

Ehe, Here is our specification for your references.

Frequency Down Converer Block specification sheet

chinhu	Specification
input frequency	950 MHz ～1550 MHz
output frequency	350 MHz ～850 MHz
Local frequency	1800 MHz
sapanosvika	500MHz
ruzha Figure	≤1.5dB
kuwana	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 Interface	SMA-50KFD
zera	108*48*15mamirimita
Power supply mode	Socket power supply

Frequency Up Converer Block specification sheet

chinhu	Specification
input frequency	350 MHz ～850 MHz
output frequency	950 MHz ～1550 MHz
Local frequency	1800 MHz
sapanosvika	500MHz
ruzha Figure	≤1.5dB
kuwana	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 Interface	SMA-50KFD
zera	108*48*15mamirimita
Power supply mode	Socket power supply

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

mhinduro: 0 dBm

7. I’m searching for a specific down converter, kuti ishandiswe neyedu OFDM RF link.

Ndiri kutsvaga imwe downconverter chaiyo, kuti ishandiswe neyedu OFDM RF link:

50ohms RF kuisa: 1.435 kuti 1.525 GHz

75 ohms IF output: chero frequency band, pakati pe100Mhz ne900MHz

Inofarirwa LO frequency: 1846MHz

Kuwana kwakaderera: nezve 28dB

Hight gain: nezve 43dB

DC inofambiswa kubva kuIF inobuda pachiteshi, 12-24vDC range

Ehe, we can customize it for you.

Chii DDC

In digitaalinen chiratidzo kugadzira, digital pasi-convert (DDC) Anochinja digitized, bhendi-yakaganhurirwa siginecha kune yakaderera frequency sigi pane yakaderera sampling chiyero kuitira kurerutsa anotevera matanho eredhiyo.. Kwacho anochengeta vose mashoko epakutanga chiratidzo shoma chakarasika kuti rounding zvikanganiso zviri kwemasvomhu pezvakaitwa. The chiyamuro uye goho anonongedzera zvinogona chaiye kana dzakaoma ivhu. Kazhinji DDC vatendeuki kubva mbishi redhiyo kakawanda kana zvenguva maitikiro pasi kunzwisisa baseband chiratidzo.

akitekicha

A DDC ine subcomponents matatu: zvakananga-digital synthesizer (DDS), yakaderera zvichipfuura firita (LPF), and a down sampler (zvingafananidzwe revatema munzvimbo yakaderera-zvichipfuura firita). Iyo DDS inogadzira yakaoma sinusoid panguva yepakati frequency (KANA). Chokuwanziridza of zvenguva kakawanda mazano chiratidzo pave mifananidzo hwakavakirwa pana Verengai uye musiyano maitikiro (iyo inotevera kubva kufrequency-shifting properties yeFourier transform). The low-pass filters pass the difference (i.e.. baseband) kakawanda pavairamba Verengai Frequency mufananidzo, zvichiguma kunzwisisa baseband cherudo yepakutanga chiratidzo. Kufunga sarudzo ine hungwaru yeIF uye LPF bandwidth, zvakaoma baseband mureza ndiwo mathematically yakaenzana chepakuvamba chiratidzo. In yayo itsva chimiro, it can readily be down-sampled and is more convenient to many DSP algorithms. Chero yakakodzera yakaderera-pass sefa inogona kushandiswa kusanganisira MOTO, IIR, uye CIC mafirita. Sarudzo inonyanyozivikanwa ndeye FIR sefa kune yakaderera huwandu hwekudzikira (asingasviki gumi) or a CIC filter followed by an FIR filter for larger down-sampling ratios.

Variations pamusoro DDC

Misiyano yakawanda paDDC inobatsira, kusanganisira vakawanda kuti chiyamuro mumwe inofambiswa chiratidzo kupinda DDS. izvi zvinosanganisira:

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, uye zvichiguma kukanganisa chiratidzo iri yakasvinwa uye zvokudya kunyika DDS
2. A Costas loop umo I uye Q vawanda uye pasi zvichipfuura yakasvinwa sezvo chikamu BPSK / QPSK keriya kupora loop

Implementation
DDCs vari anowanzodanwa chinozoiswa kufunga mumunda-programmable gedhi arrays kana kushanda-chaicho Integrated nematunhu. Nepo Software implementations kunobvirawo, akavhiyiwa muna DDS, multipliers, and input stages of the low-pass filters all run at the sampling rate of the input data. date ichi unonyanyozivikanwa vangoendeswa kubva analoginen kune digitaalinen converters (ADCs) sampling pamakumi kana mazana eMHz. 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.

Mufananidzo kutapurirana downconverter China Shenzhen mutengesi， Frequency customization

zita: Image downconverter
model: LWDC-248258I
Kuverenga nhamba: 1805001
RF +12V IF
zita: RF Down Converter
mhando: LWDC-3000I
mhando: LWDC-1400
Frequency kuisa 2G ~ 2.7G(2000~ 2700Mhz)
Lower: 1800Mhz
Frequency output: 200Mhz-700Mhz
SN2405002

Customize Frequency Specification Sheet Download

OF 1750Mhz Down