Simsiz video uzatish RF chastotali raqamli pastga konvertori COFDM uzatish chastotasi 2,4G dan 600 MGts gacha past BDC
Raqamli Down Converter
Simsiz video uzatish RF chastotali raqamli pastga konvertori COFDM uzatish chastotasi 2,4G dan 600 MGts gacha past.
Mundarija
sotish ballari
- dan Kirish chastotalar 24000 600MHz uchun (quyi 1800MHz)
- Oliy bandwidth
- Kam o'zgarishlar momaqaldiroq
- Yuqori chastotali barqarorlik
spetsifikatsiyasi
RF Chast oralig'i: 2400 MGts
AGAR Chast oralig'i: 600 MGts
Orqaga qaytish halok:-12 dB
Frequency aniqlik: 10 ppm ±
Image rad: 60 DBC
tekislik: 0,5 JB ± (8MHz bandwidth)
konvertatsiya Gain: 25 dB
o'zgarishlar momaqaldiroq (DBC / Hz)
DBC / Hz @ 1KHz ≤-80
DBC / Hz @ 10KHz ≤-90
DBC / Hz @ 100KHz ≤-100
Supply Voltage: 10~ 15V
Power joriy: 100 mA
Ish harorati oralig'i: +25 ℃
port
RF iN: SMA-50K
OUT BO'LSA: SMA-50K
Power + 12V: tayoq
GND: Soldering lug
Eslatma
- Konverter orqa uchida past shovqinli kuchaytirgichni qo'shishga hojat yo'q.
- haqiqiy sinov: 2.4GHz / bandwidth 4MHz chastotasi ostida yopiq-halqa test, qabul sezuvchanlik -105dBm erishish mumkin.
- Kirish chastotasi 1 ~ 3 gigagertsli qo'llab-quvvatlaydi. (Biz sozlashda yordam bera olamiz).
- Output frequency supports 300~700MHz. (Biz moslashtiring qo'llab-quvvatlash mumkin).
About the above video:
Our most popular products are wireless video transmitters and receivers. ammo, 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.
Tez-tez so'raladigan savollar
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. Masalan,
- 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, misol uchun, 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.
ha, our professional engineer replied, we can do it. And, before delivery, we will show you the test video.
ha, our professional engineer confirms that we can re-design and modify some key components to do that. Albatta, before delivery, we will show you the test video.
Thanks for your inquiry, I will check with our engineer.
Thanks for your inquiry. Biz siz uchun sozlashimiz mumkin.
Please tell us the specification details of your transmitter and receiver modules.
savol: 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 MGts. Mahalliy osilator 1800 MGts.
ha, Here is our specification for your references.
Frequency Down Converer Block specification sheet
|
buyum |
spetsifikatsiyasi |
|
input frequency |
950 MHz ～1550 MHz |
|
output frequency |
350 MHz ～850 MHz |
|
Local frequency |
1800 MHz |
|
span |
500MHz |
|
Shovqin-rasm |
≤1.5dB |
|
daromad |
25 dB |
|
Carrier leakage |
≤-20dBm |
|
Belt unevenness(8MHz) |
≤1.5dB |
|
IIP3: |
≥15dBm |
|
maximum input level |
-10dBm |
|
mos kelmasligi |
≤1.5 |
|
operation temperature |
-10～+60℃ |
|
voltage current |
12V/240mA |
|
RF interfeysi |
SMA-50KFD |
|
hajmi |
108*48*15mm |
|
Power supply mode |
Socket power supply |
Frequency Up Converer Block specification sheet
|
buyum |
spetsifikatsiyasi |
|
input frequency |
350 MHz ～850 MHz |
|
output frequency |
950 MHz ～1550 MHz |
|
Local frequency |
1800 MHz |
|
span |
500MHz |
|
Shovqin-rasm |
≤1.5dB |
|
daromad |
25 dB |
|
Carrier leakage |
≤-20dBm |
|
Belt unevenness(8MHz) |
≤1.5dB |
|
IIP3: |
≥15dBm |
|
maximum input level |
-10dBm |
|
mos kelmasligi |
≤1.5 |
|
operation temperature |
-10～+60℃ |
|
voltage current |
12V/240mA |
|
RF interfeysi |
SMA-50KFD |
|
hajmi |
108*48*15mm |
|
Power supply mode |
Socket power supply |
savol: If a signal of -25 dbm enter, what level has the coverterd output?
javob: 0 dBm
DDC nima
raqamli signal qayta ishlash, raqamli pastga-konverter (DDC) raqamli aylantiradi, Keyingi radio bosqichlarini soddalashtirish uchun kamroq namuna olish tezligida past chastotali signalga tarmoqli cheklangan signal. jarayon matematik jarayonlarida yaxlitlash xatolar uchun yo'qoladi original signali barcha ma'lumotlarni kamroq deb saqlab. Kirish va chiqish signallari haqiqiy yoki kompleks namunalari bo'lishi mumkin. Ko'pincha DDC pastga murakkab tarmoqli uzatish xom radio chastotasi yoki oraliq chastotasi aylantirgan.
arxitektura
A DDC uch pastki qismlariga iborat: to'g'ridan-to'g'ri raqamli sintezator (DDS), past-Pass filtri (LPF), and a down sampler (past-o'tkazgan filtri singdirilishi mumkin). DDS oraliq chastotada murakkab sinusoid hosil qiladi (AGAR). Kirish signali bilan oraliq chastota ko'paytma yig'indisi va farq chastotada markazli tasvirlar yaratadi (Bu Furye konvertatsiyasining chastotani o'zgartirish xususiyatlaridan kelib chiqadi). The low-pass filters pass the difference (aytganda. baseband) chastota sum chastota tasvirni inkor esa, original uzatish, bir murakkab tarmoqli vakillik natijasida. IF va LPF o'tkazish qobiliyatini oqilona tanlashni nazarda tutsak, murakkab tarmoqli signal asl uzatish matematik teng. yangi formada, it can readily be down-sampled and is more convenient to many DSP algorithms. Har qanday mos keladigan past o'tkazuvchan filtr, shu jumladan FIR ham ishlatilishi mumkin, IIR, va CIC filtrlari. Eng keng tarqalgan tanlov - kam miqdordagi decimation uchun FIR filtri (kam o'n) or a CIC filter followed by an FIR filter for larger down-sampling ratios.
DDC haqida Variations
DDC ning bir nechta o'zgarishlari foydalidir, DDS ichiga ko'p ekanini kiritish bir fikringiz signal, shu jumladan,. Bu o'z ichiga oladi:
- 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, va natijada xato signal, suzilgan va DDS qaytib beriladi
- A Costas halqa bo'lgan, men va Q ko'paytiriladi va past Pass bir BPSK / QPSK tashuvchisi tiklash Ichak qismi sifatida, suzilgan
amalga oshirish
DDCs eng keng tarqalgan faoliyat-programlanabilir eshik suhbat yoki ariza-maxsus integral mikrosxemalar mantiq amalga oshirilmoqda. dasturiy ilovalar ham mumkin-da, DDS operatsiyalar, multiplikatorlar, and input stages of the low-pass filters all run at the sampling rate of the input data. Bu ma'lumotlar, odatda, raqamli Konverter uchun analog to'g'ridan to'g'ri qabul qilinadi (ADCs) o'nlab yoki yuzlab MGts chastotada namuna olish. 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.
Rasm uzatishni pastga aylantiruvchi Xitoy Shenzhen yetkazib beruvchisi， Chastotani sozlash
nomi: Tasvirni pastga aylantiruvchi
model: LWDC-248258I
Raqamlash: 1805001
RF +12V IF
ism: RF pastga konvertori
model: LWDC-3000I
model: LWDC-1400
Kirish chastotasi 2G~2,7G(2000~ 2700 MGts)
Pastroq: 1800MGts
Chiqish chastotasi: 200MGts - 700 MGts
SN2405002
| MIN | TYPE | mos yozuvlar liniyasini yoqish / o'chirish funktsiyasi | ||
| Ishlash chastotasi diapazoni (MHz) | 1300 | – | 1400 | Ishchi chastota diapazoni (MHz) |
| Mahalliy osilator (MHz) | 1000 | Mahalliy osilator (MGts) | ||
| O'rta chastota (MHz) | 300 | – | 400 | O'rta chastota (MHz) |
| Konversiya daromadi(dB) | 18 | 20 | 22 | Konversiya daromadi(dB) |
| Yassilikka erishing (dB) | ±1 | – | Yassilikka erishing(dB） | |
| Shovqin figurasi (dB) | 1.5 | – | Shovqin figurasi(dB） | |
| Portda turgan to'lqinlar nisbati VSWR | 1.5 | 1.8 | 2 | Portda turgan to'lqinlar nisbati VSWR |
| Port empedansi(om) | 50 | – | port empedansi(om) | |
| Maksimal kirish quvvati (dBm) | -5 | Maksimal kirish quvvati (dBm) | ||
| Maksimal chiqish quvvati (dBm) | 15 | Maksimal chiqish quvvati (dBm) | ||
| ishchi kuchlanish (V) | 10 | 12 | 15 | Ishlash kuchlanishi (V) |
| operatsion oqimi (mA) | 130 | 150 | 180 | Ishlash oqimi (mA) |
| operatsion harorati (° C) | -25 | 55 | Ishlash harorati (°C) | |
| saqlash harorati (° C) | -45 | 65 | Saqlash harorati (C) | |
| Hajmi mm (ulagichlar holda) | 62x32x14mm | Olchamlari mm (ulagichsiz) |
Customize Frequency Specification Sheet Download
| buyum | parametr |
| input frequency | 2100 MHz ～2500 MHz |
| output frequency | 350 MHz ～750 MHz |
| Local frequency | 1750 MHz |
| Shovqin-rasm | ≤1.5dB |
| daromad | 15 dB |
| Carrier leakage | ≤-20dBm |
| Belt unevenness(8MHz) | ≤1.5dB |
| IIP3: | ≥15dBm |
| maximum input level | 0dBm |
| mos kelmasligi | ≤1.5 |
| operation temperature | -10～+60℃ |
| voltage current | ≤12V/240mA |
| RF interfeysi | N-50KFD |
| hajmi | 108*48*22mm |
| Power supply mode | Online power supply |
"Izohlari, siz bo'lingSimsiz video uzatish RF chastotali raqamli pastga konvertori COFDM uzatish chastotasi 2,4G dan 600 MGts gacha past BDC”
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