Digital Down Ntụgharị
Nbufe vidiyo ikuku ikuku RF Frequency Digital Down Converter COFDM Nyefe ugboro 2.4G ruo 600Mhz dị ala.
Tebulu ọdịnaya
n'ire Points
- Input frequencies si 24000 ka 600MHz (Lower 1800Mhz)
- High bandwit
- Low-adọ mkpọtụ
- Elu ugboro kwụsie ike
nkọwapụta
RF Frequency iche: 2400 MHz
Ọ BỤRỤ na Frequency iche: 600 MHz
laghachi Loss:-12 dB
Frequency Accuracy: ± 10 ppm
Image Jụrụ Ajụ: 60 dBc
Flatness: ± 0,5 dB (8MHz bandwit)
Nchigharị Ga: 25 dB
adọ Noise (dBc / Hz)
dBc / Hz @ 1KHz ≤-80
dBc / Hz @ 10KHz ≤-90
dBc / Hz @ 100KHz ≤-100
Tụkwasịnụ voltaji: 10~ 15V
ike Ugbu A: 100 mA
Operating okpomọkụ nso: +25 ℃
Port
RF IN: Sma-50K
ọ bụrụ na: Sma-50K
Power + 12V: Stick
GND: jikọtara lug
Note
- Onye ntụgharị ahụ adịghị mkpa ịgbakwunye ụda mkpọtụ dị ala na njedebe azụ.
- Ojiji Test: mechiri emechi-akaghị ule n'okpuru ugboro nke 2.4GHz / bandwit 4MHz, ndibọbọ uche nwere ike iru -105dBm.
- Ọsọ ọsọ ugboro na-akwado 1 ~ 3GHz. (Anyị nwere ike inye aka hazie).
- Output frequency supports 300~700MHz. (Anyị nwere ike na-akwado hazie).
About the above video:
Our most popular products are wireless video transmitters and receivers. Otú ọ dị, 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.
Ajụjụ
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. Ọmụmaatụ,
- 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.
Ka ịgbanwee ugboro ọrụ nke nnyefe na nnata, down-conversion or up-conversion is required. Gbaa mbọ hụ na mgbasa ozi na-adabere na iwu na ụkpụrụ mpaghara.
Enwekwara ikpe ebe a na-edozi ugboro ole ọkachamara na-anata, ọmụmaatụ, n'etiti 300-800Mhz.
In order for the transmitter's frequency to be paired, tugboro ugboro nke 1.2G transmitter ga-ebelata.
Ihe ndị a niile na-achọ ka iji ihe ntụgharị ugboro ugboro maka nnyefe vidiyo ikuku.
Ee, our professional engineer replied, we can do it. And, before delivery, we will show you the test video.
Ee, our professional engineer confirms that we can re-design and modify some key components to do that. Chọpụta, before delivery, we will show you the test video.
Daalụ maka ajụjụ gị, I will check with our engineer.
Daalụ maka ajụjụ gị. We can customize for you.
Please tell us the specification details of your transmitter and receiver modules.
ajụjụ: 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. Oscillator mpaghara 1800 MHz.
Ee, Here is our specification for your references.
Frequency Down Converer Block specification sheet
item |
nkọwapụta |
input frequency |
950 MHz ~1550 MHz |
output frequency |
350 MHz ~850 MHz |
Local frequency |
1800 MHz |
adịru |
500MHz |
Noise Ọgụgụ |
≤1.5dB |
nweta |
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 |
size |
108*48*15mm |
Power supply mode |
Socket power supply |
Frequency Up Converer Block specification sheet
item |
nkọwapụta |
input frequency |
350 MHz ~850 MHz |
output frequency |
950 MHz ~1550 MHz |
Local frequency |
1800 MHz |
adịru |
500MHz |
Noise Ọgụgụ |
≤1.5dB |
nweta |
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 |
size |
108*48*15mm |
Power supply mode |
Socket power supply |
ajụjụ: If a signal of -25 dbm enter, what level has the coverterd output?
Azịza: 0 dBm
Gịnị bụ DDC
Na digital mgbaàmà nhazi, a digital ala-Ntụgharị (DDC) atọghata a digitized, Mgbama nwere oke bandwit gaa na mgbama ugboro dị ala na ọnụego nlele dị ala iji mee ka usoro redio na-esote dị mfe.. The usoro na-echebe ndị niile na ozi na mbụ mgbaàmà obere na nke na-efu ka ịchịkọta na njehie na mgbakọ na mwepụ usoro. The ọsọ ọsọ na-mmepụta n'ókè nwere ike ịbụ n'ezie ma ọ bụ mgbagwoju samples. Ọtụtụ mgbe, ndị DDC atọghata si raw radio ugboro ma ọ bụ n'etiti ugboro ala a mgbagwoju baseband mgbaàmà.
Architecture
A DDC mejupụtara atọ subcomponents: a kpọmkwem digital synthesizer (DDS), a ala-ngafe nyo (LPF), and a down sampler (nke nwere ike ike n'ime ala-ngafe nyo). DDS na-ewepụta sinusoid dị mgbagwoju anya na oge etiti (Ọ BỤRỤ na). Multiplication nke etiti ugboro na input mgbaàmà emepụta ihe oyiyi hiwere na nchikota na dị iche ugboro ole (nke na-esote site na njirimara na-agbanwe ugboro ugboro nke Fourier transform). The low-pass filters pass the difference (i.e.. baseband) ugboro ole mgbe jụrụ nchikota ugboro image, n'ihi na a mgbagwoju baseband onodi nke mbụ mgbaàmà. Na-eche na nhọrọ ziri ezi nke IF na bandwit LPF, mgbagwoju baseband mgbaàmà bụ mathematically Ẹkot mbụ mgbaàmà. Ya ọhụrụ ụdị, it can readily be down-sampled and is more convenient to many DSP algorithms. Enwere ike iji nzacha dị ala ọ bụla dabara adaba gụnyere FIR, IIR, na CIC nzacha. Nhọrọ a na-ahụkarị bụ nzacha FIR maka obere mbelata (na-erughị iri) or a CIC filter followed by an FIR filter for larger down-sampling ratios.
Ọdịiche na DDC
Ọtụtụ ọdịiche dị na DDC na-enyere aka, tinyere ọtụtụ ihe ndị input a nzaghachi mgbaàmà n'ime DDS. a na-agụnye:
- 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, na n'ihi njehie mgbaàmà na-ẹdụk na nri azụ n'ime DDS
- A Costas loop nke m na Q na-uba na ala ngafe ẹdụk dị ka akụkụ nke a BPSK / QPSK ụgbọelu mgbake loop
mmejuputa iwu
DDCs na-akacha emejuputa atumatu mgbagha na ubi-programmable ámá arrays ma ọ bụ ngwa-kpọmkwem integrated na sekit na sekit. Mgbe software implementations bụ na-ekwe omume, arụmọrụ ke DDS, ndị na-ebuwanye ibu, and input stages of the low-pass filters all run at the sampling rate of the input data. Nke a data na-ọtụtụ ndị na-e kpọmkwem site analọg na digital converters (ADCs) nlele na iri ma ọ bụ narị narị 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.
Foto nnyefe downconverter China Shenzhen soplaya, Nhazi ugboro ugboro
aha: Ihe ngbanwe onyonyo
ihe nlereanya: LWDC-248258I
Ọnụọgụgụ: 1805001
RF +12V Ọ BỤRỤ
aha: Ntụgharị RF Down
model: LWDC-3000I
model: LWDC-1400
Ntinye ugboro ugboro 2G~2.7G(2000~ 2700Mhz)
Ala: 1800MHz
Mbupute ugboro ugboro: 200Mhz-700Mhz
SN2405002
MIN | Ụdị | VW Crafter ọkụ breeki igwe eji eme ihe | ||
Ugboro ugboro na-arụ ọrụ (MHz) | 1300 | – | 1400 | Ugboro ugboro na-arụ ọrụ (MHz) |
Oscillator mpaghara (MHz) | 1000 | Oscillator mpaghara (MHz) | ||
na ngwaọrụ ndị ọzọ maka H.264 decoding na playback (MHz) | 300 | – | 400 | Ugboro etiti (MHz) |
Uru ntughari(dB) | 18 | 20 | 22 | Uru ntughari(dB) |
Nweta flatness (dB) | ±1 | – | Nweta flatness(dB) | |
Ọnụ ọgụgụ mkpọtụ (dB) | 1.5 | – | Ọnụ ọgụgụ mkpọtụ(dB) | |
Oke Port Standing Wave Ratio VSWR | 1.5 | 1.8 | 2 | Oke Port Standing Wave Ratio VSWR |
Port Impedance(ohm) | 50 | – | ọdụ ụgbọ mmiri impedance(ohm) | |
Ike ntinye kacha (dBm) | -5 | Ike ntinye kacha (dBm) | ||
Ike mmepụta kacha (dBm) | 15 | Ike mmepụta kacha (dBm) | ||
na-arụ ọrụ voltaji (V) | 10 | 12 | 15 | Voltaji arụ ọrụ (V) |
operating ugbu a (mA) | 130 | 150 | 180 | Ugbu a na-arụ ọrụ (mA) |
operating okpomọkụ (° C) | -25 | 55 | Okpomọkụ arụ ọrụ (°C) | |
nchekwa okpomọkụ (° C) | -45 | 65 | Okpomọkụ nchekwa (C) | |
Akụkụ mm (enweghị njikọta) | 62x32x14mm | Akụkụ mm (enweghị njikọ) |
Nyocha
E nweghị ndị na reviews ma.