Tarchur Físeáin Gan Sreang RF Minicíocht Digiteach Síos Tiontaire COFDM Minicíocht aistrithe 2.4G go 600Mhz BDC íseal

Digital Down Tiontaire

Tarchur Físeáin Gan Sreang RF Minicíocht Digiteach Síos Tiontaire COFDM Minicíocht aistrithe 2.4G go 600Mhz íseal

Pointí díol

1. minicíochtaí ionchur ó 24000 go 600MHz (1800MHz Íochtarach)
2. Ard bandaleithead
3. torann chéim íseal
4. cobhsaíocht ard-minicíocht

Sonraíocht

RF Minicíocht Raon: 2400 Mhz
MÁ Raon Minicíocht: 600 Mhz
Caillteanas Tuairisceán:-12 dB
Cruinneas minicíocht: ± 10 csm
image Diúltú: 60 dBc
maoile: ± 0.5 dB (8MHz bandaleithead)
Gnóthachan comhshó: 25 dB
Torann Céim (dBc / Hz)
dBc / Hz @ 1kHz ≤-80
dBc / Hz @ 10KHz ≤-90
dBc / Hz @ 100KHz ≤-100
Soláthar Voltage: 10~ 15V
Cumhacht Reatha: 100 mA
Teocht Oibriúcháin Raon: +25 ℃

Port

RF IN: SMA-50k
MÁ AMACH: SMA-50k
Cumhacht 12 V: Cuir
GND: Lug sádráil

Nóta

1. Ní gá don tiontaire aimplitheoir íseal-torainn a chur leis ag an gcúl.
2. Tástáil Iarbhír: Tástáil dúnta-lúb faoi minicíocht na 2.4GHz / 4MHz bandaleithead, Is féidir leis an íogaireacht glactha a bhaint amach -105dBm.
3. Tacaíonn minicíocht ionchur 1 ~ 3GHz. (Is féidir linn cabhrú le saincheaptha).
4. Output frequency supports 300~700MHz. (Is féidir linn tacaíocht a thabhairt shaincheapadh).

About the above video:

Our most popular products are wireless video transmitters and receivers. ach, 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. Cad is tiontaire digiteach bloc-síos minicíochta RF (BDC)?

A downconverter bloc minicíocht RF (BDC) le haghaidh tarchuradóirí físeáin gan sreang is gléas é is féidir raon ardmhinicíochta a thiontú go raon minicíochta íseal.

Úsáidtear go hiondúil ar thaobh an tarchuradóra físeáin gan sreang. Mar shampla,

• Ó 5.8G go 2.4G síos tiontaire
• Ó 2.4G go 1.2G síos tiontaire
• Ó 1.2G go 600Mhz síos tiontaire

Tá sé seo mar gheall ar an bhfíric go bhfuil minicíochtaí tarchurtha gan sreang i go leor tíortha nó réigiúin srianta ag dlíthe agus rialacháin áitiúla.

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, mar shampla, 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. Bheadh ​​mo raon minicíochta ionchur mór a bheith 2.0GHz go 2.7Ghz, need a downconverter to 200 Mhz to 900Mhz. Ba mhaith leis an gnóthachan comhshó hidéalach 30dB ní 25db. An mbeadh sé seo a bheith éasca duit a dhéanamh?

Is ea, 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.

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

4. Do you have or designed for MMDS applications? ó 3400 -3600MHZ, The S-Band is converted to the UHF range 400 chun 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? ó 1,25 GHz to 3.4 GHz?

Thanks for your inquiry. Is féidir linn a shaincheapadh ar do shon.

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?

Ceist: 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. Ascaltóir áitiúil 1800 Mhz.

Is ea, Here is our specification for your references.

Frequency Down Converer Block specification sheet

Mír	Sonraíocht
input frequency	950 MHz ～1550 MHz
minicíocht aschuir	350 MHz ～850 MHz
Local frequency	1800 MHz
SPAN	500MHz
Figiúr torann	≤1.5dB
gnóthachan	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
Comhéadan RF	SMA-50KFD
méid	108*48*15mm
Power supply mode	Socket power supply

Frequency Up Converer Block specification sheet

Mír	Sonraíocht
input frequency	350 MHz ～850 MHz
minicíocht aschuir	950 MHz ～1550 MHz
Local frequency	1800 MHz
SPAN	500MHz
Figiúr torann	≤1.5dB
gnóthachan	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
Comhéadan RF	SMA-50KFD
méid	108*48*15mm
Power supply mode	Socket power supply

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

Freagra: 0 dBM

7. I’m searching for a specific down converter, le húsáid lenár nasc OFDM RF féin.

Tá mé ag cuardach downconverter ar leith, le húsáid lenár nasc OFDM RF féin:

50ionchur RF ohms: 1.435 chun 1.525 GHz

75 ohms IF output: aon bhanda minicíochta, idir 100Mhz agus 900MHz

Minicíocht LO is fearr leat: 1846MHz

Gnóthachan íseal: thart ar 28dB

Gnóthachan ard: thart ar 43dB

DC faoi thiomáint ó phort aschuir IF, 12-24raon vDC

Is ea, we can customize it for you.

Cad é DDC

I próiseála comhartha digiteach, digiteach síos-tiontaire (DDC) athraíonn a digitithe, comhartha banna-teoranta go comhartha minicíochta níos ísle ag ráta samplála níos ísle chun na céimeanna raidió ina dhiaidh sin a shimpliú. Caomhnaíonn an próiseas an t-eolas go léir sa comhartha bunaidh lúide sin a cailleadh earráidí shlánú sna próisis mhatamaiticiúla. Is féidir leis an comharthaí ionchur agus aschur a bheith samplaí fíor nó casta. Is minic a athraíonn an DDC ón minicíocht raidió amh nó minicíocht idirmheánach síos chun comhartha baseband casta.

ailtireacht

A DDC comhdhéanta de thrí subcomponents: sintéiseoir díreach digiteach (DDS), scagaire íseal-pas (LPF), and a down sampler (a fhéadfar a lánpháirtiú i scagaire íseal-pas). Gineann an DDS sinusoid casta ag an minicíocht idirmheánach (DÁ). Cruthaíonn Iolrú ar an minicíocht idirmheánach leis an comhartha ionchur íomhánna láraithe ag an tsuim agus difríocht minicíocht (a leanann ó airíonna aistrithe minicíochta an chlaochlaithe Fourier). The low-pass filters pass the difference (i.e.. baseband) minicíocht agus níor ghlac sí leis an íomhá tsuim minicíocht, a eascraíonn i léiriú baseband casta ar an comhartha bunaidh. Ag glacadh leis go mbeidh rogha bhreithiúnach maidir le bandaleithead IF agus LPF, Is é an comhartha baseband casta go matamaiticiúil atá coibhéiseach leis an comhartha bunaidh. Ina fhoirm nua, it can readily be down-sampled and is more convenient to many DSP algorithms. Is féidir aon scagaire íseal-pas oiriúnach a úsáid lena n-áirítear FIR, IIR, agus scagairí CIC. Is é an rogha is coitianta ná scagaire FIR le haghaidh méideanna íseal díchill (níos lú ná deich) or a CIC filter followed by an FIR filter for larger down-sampling ratios.

Athruithe ar an DDC

Tá roinnt athruithe ar an DDC cabhrach, agus neart samplaí go ionchur comhartha aiseolas isteach sa DDS. Ina measc:

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, agus tá an comhartha earráid mar thoradh air scagtha agus chothú ar ais sa DDS
2. A lúb Costas ina bhfuil an I agus Q a iolrú agus pas íseal scagtha mar chuid de BPSK / QPSK lúb ghnóthú iompróir

Cur i bhfeidhm
DDCs i bhfeidhm an chuid is mó coitianta i loighic i arrays geata réimse an-ríomhchláraithe nó ciorcaid chomhtháite i bhfeidhm ar leith. Cé go bhfuil implementations bogearraí féidir freisin, oibríochtaí sa DDS, iolraitheoirí, and input stages of the low-pass filters all run at the sampling rate of the input data. Tá na sonraí seo tógtha go coitianta go díreach ó aschur a converters digiteach (ADCanna) sampláil ag na mílte nó na céadta 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.

Pictiúr downconverter tarchurtha tSín Shenzhen soláthraí， Saincheapadh minicíochta

ainm: Íoslódáil tiontaire íomhá
Mionsamhail: LWDC-248258I
Uimhriú: 1805001
RF +12V MÁ
Ainm: Tiontaire RF Down
Mionsamhail: LWDC-3000I
Mionsamhail: LWDC-1400
Ionchur minicíochta 2G~2.7G(2000~2700Mhz)
Íochtarach: 1800Mhz
Aschur minicíochta: 200Mhz-700Mhz
SN2405002

Customize Frequency Specification Sheet Download

OF 1750Mhz Down