Whakawhiti Ataata Ahokore RF Auautanga Mamati Raro Kaihuri COFDM Whakawhiti auau 2.4G ki te 600Mhz BDC iti

Digital Raro Converter

Whakawhiti Ataata Ahokore RF Auautanga Mamati Raro Kaihuri COFDM Whakawhiti auau 2.4G ki te 600Mhz iti

Piro hoko

1. iarere Tāuru i 24000 ki 600MHz (1800Mhz raro)
2. hōkaiipurangi High
3. haruru wāhanga iti
4. pūmautanga High-auau

Whakapūtātanga

Awhe Auautanga RF: 2400 MHz
IF Awhe Auautanga: 600 MHz
Ngaronga Hoki:-12 DB
Tika auautanga: ± 10 ppm
taliteke'í image: 60 DBC
Flatness: ± 0.5 DB (8MHz hōkaiipurangi)
Conversion whai: 25 DB
Noise wāhanga (DBC / Hz)
DBC / Hz @ 1KHz ≤-80
DBC / Hz @ 10KHz ≤-90
DBC / Hz @ 100KHz ≤-100
supply Ngaohiko: 10~ 15V
Power nāianei: 100 mA
Awhe Temperature Whakahaere: +25 ℃

Port

RF IN: SMA-50k
IF OUT: SMA-50k
Power + 12V: rakau
GND: lug whakapiringa

tuhipoka

1. Karekau te kaitahuri e hiahia ki te taapiri i te whakakaha haruru iti ki te pito o muri.
2. Test tūturu: whakamātautau kati-koropiko i raro i te auau o te 2.4GHz / hōkaiipurangi 4MHz, Ka taea e te tūtohutanga te fariiraa tae -105dBm.
3. tautoko Tāuru auau 1 ~ 3GHz. (Ka taea e matou te awhina ki te whakarite).
4. Ko te auau putanga e tautoko ana i te 300~700MHz. (Ka taea e tatou te tautoko Whakaritea).

About the above video:

Our most popular products are wireless video transmitters and receivers. Heoi, 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. Hei tauira,

• 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, hei tauira, 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. e hiahia taku whānuitanga auau tāuru ki te hei 2.0GHz ki 2.7Ghz, need a downconverter to 200 Mhz to 900Mhz. Te faafariuraa taonga tano e kia 30db kore 25db. E tenei kia ngāwari hoki ki a koutou mahi?

Ae, 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.

Ae, our professional engineer confirms that we can re-design and modify some key components to do that. Pono, 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 ki 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?

pātai: 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 rohe 1800 MHz.

Ae, Here is our specification for your references.

Frequency Down Converer Block specification sheet

Te nama take	Whakapūtātanga
input frequency	950 MHz ～1550 MHz
auau putanga	350 MHz ～850 MHz
Local frequency	1800 MHz
whanganga a	500MHz
Figure Noise	≤1.5dB
taonga	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
Atanga RF	SMA-50KFD
rahi	108*48*15mm
Power supply mode	Socket power supply

Frequency Up Converer Block specification sheet

Te nama take	Whakapūtātanga
input frequency	350 MHz ～850 MHz
auau putanga	950 MHz ～1550 MHz
Local frequency	1800 MHz
whanganga a	500MHz
Figure Noise	≤1.5dB
taonga	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
Atanga RF	SMA-50KFD
rahi	108*48*15mm
Power supply mode	Socket power supply

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

Whakautu: 0 dBm

7. I’m searching for a specific down converter, to be used with our own OFDM RF link.

I’m searching for a specific downconverter, to be used with our own OFDM RF link:

50ohms RF input: 1.435 ki 1.525 GHz

75 ohms IF output: tetahi roopu auau, i waenga i te 100Mhz me te 900MHz

Ko te auau LO pai ake: 1846MHz

Te whiwhinga iti: āhua 28dB

Hua teitei: āhua 43dB

DC powered i IF tauranga putanga, 12-24awhe vDC

Ae, we can customize it for you.

He aha te mea DDC

I roto i te tukatuka tohu mamati, he mamati-pūtahuri iho (DDC) tahuri te āmati, tohu here-iti ki te tohu auau iti i te reiti whakatauira iti hei whakangawari i nga waahanga reo irirangi ka whai ake. Ko te tukanga tiakina ana te mōhiohio katoa i roto i te tohu taketake iti e ngaro nei te ki hapa whakaawhiwhi i te tukanga pāngarau. Ka taea e te tohu kōkuhu me te whakaputa kia tauira tūturu ranei matatini. E mea pinepine te DDC tahuri i te auau irirangi raw auau takawaenga ranei ki raro, ki te tohu baseband matatini.

architecture

Kei te DDC o toru Mōteteroto: he tukutahi mamati tika (DDS), he tātari iti-haere (LPF), and a down sampler (e kia kia ngātahi ki te tātari iti-haere). Ka hangaia e te DDS he sinusoid matatini i te auau takawaenga (IF). Whakarea o te auau takawaenga ki te tohu tāuru hanga whakapakoko faatumuhia i te moni me te rerekētanga auau (e whai ana i nga ahuatanga rereke-rere o te huringa Fourier). The low-pass filters pass the difference (i.e.. baseband) auau i te pato'iraa i te whakapakoko moni auau, hua i roto i te kanohi baseband matatini o te tohu taketake. Ma te whakaaro he pai te kowhiringa o te IF me te LPF bandwidth, Ko te pāngarau ōrite ki te tohu taketake te tohu baseband matatini. I roto i tona puka hou, it can readily be down-sampled and is more convenient to many DSP algorithms. Ka taea te whakamahi i nga tātari iti-paahi tae atu ki te FIR, IIR, me nga whiriwhiringa CIC. Ko te whiriwhiringa noa he tātari FIR mo te iti o te whakahekenga (iti iho i te kotahi tekau) or a CIC filter followed by an FIR filter for larger down-sampling ratios.

Momo i runga i te DDC

He maha nga rereketanga o te DDC he awhina, tae atu e rave rahi e wāhi te tohu urupare ki te DDS. Ko ētahi o ēnei:

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, ka tātari i te hua hapa tohu te ka whangai hoki ki te DDS
2. He koropiko Costas i nei e whakanuia te ahau me Q, ka tātari haere iti hei wāhanga o te BPSK / QPSK kawe whakaora koropiko

whakatinanatanga
Kei te tino nuitia whakatinana DDCs i arorau i roto i ngā huānga kuwaha mara-programmable iahiko integrated tono-motuhake ranei. Ahakoa ka taea hoki implementations pūmanawa, ngā mahi i roto i te DDS, whakarea, and input stages of the low-pass filters all run at the sampling rate of the input data. Kei te tangohia nuitia tenei raraunga tika i tairitenga ki pūtahuri mamati (ADCs) te whakatauira i te tekau, rau ranei o 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.

Pikitia tuku downconverter Haina Shenzhen kaiwhakarato， Whakaritenga auau

ingoa: Kaihurihuri whakaahua
tauira: LWDC-248258I
Te tatau: 1805001
RF +12V IF
ingoa: RF Raro Converter
tauira: LWDC-3000I
tauira: LWDC-1400
Tāuru auau 2G~2.7G(2000~2700Mhz)
Raro: 1800MHz
Putanga auau: 200Mhz-700Mhz
SN2405002

Customize Frequency Specification Sheet Download

OF 1750Mhz Down