- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄373540 > TA0321 (意法半導(dǎo)體) TECHNICAL ARTICLE PDF資料下載
參數(shù)資料
| 型號(hào)： | TA0321 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | TECHNICAL ARTICLE |
| 中文描述： | 技術(shù)文章 |
| 文件頁(yè)數(shù)： | 2/12頁(yè) |
| 文件大?。?/td> | 170K |
| 代理商： | TA0321 |
1 What is a Low Noise Block (LNB)
TA0321
2/12
1
What is a Low Noise Block (LNB)
An LNB is a low noise block module, placed on the focus of the satellite dish antenna (parabola)
that provides the following functions:
Down conversion of the incoming signal from GHz range to the 910 MHz - 2150 MHz (for
Europe) range called “first conversion signal”. This conversion allows the signal to be
carried by an inexpensive coaxial cable towards the receiver.
Signal amplification with good noise figure. The LNB improves the first conversion signal
level through the use of a built-in low noise amplifier.
Selection of Vertical or Horizontal polarization.
Selects operating band by switching its internal oscillator from Low band to High band
when the LNB “receives” a 22kHz tone. Specifically, the local oscillator (LO) frequency
changes from 9.75 GHz to 10.6 GHz.
–
C Band - LO frequency 9.75 GHz
–
Ku Band - LO frequency 10.6 GHz
Miscellaneous functions based on 22kHz tone PPM encoding, as discussed later in this
paper.
●
●
●
●
●
Figure 1.
OMNI-LNB architecture
Waveguide
transition
and
Depolarizer
Antenna
feed
system
Power supply
and
control
LNA and
Polaraization
matrix
Polarization
switch
LNB
Back-end
IF Output
H
RHCP
LHCP
V
X
Y
RF Input
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TA041F | SOUND FIELD REPRODUCTION IC |
| TA2041F | SOUND FIELE REPRODUCTION IC |
| TA2041 | SOUND FIELE REPRODUCTION IC |
| TA075-180-24-12 | 7.5 - 18 GHz 12 dBm Amplifier |
| TA1101B | Stereo 10W (4з) Class-T⑩ Digital Audio Amplifier using Digital Power Processing⑩ Technology |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TA032160BBJ0G | 制造商:FCI 功能描述:505-5BJF-WIRE PROTECTOR SYSTEM - Bulk 制造商:FCI 功能描述:OEM ITEM 505-5BJF-WIRE PROTECTOR SYSTEM |
| TA0321A | 制造商:TAI-SAW 制造商全稱:TAI-SAW 功能描述:SAW Filter 881.5MHz SMD 2.5×2.0 mm |
| TA0322A | 制造商:TAI-SAW 制造商全稱:TAI-SAW 功能描述:SAW Filter 433.92MHz SMD3.0X3.0mm |
| TA0326A | 制造商:TAI-SAW 制造商全稱:TAI-SAW 功能描述:SAW Filter 611MHz SMD 9.1×7.1mm |
| TA0327A | 制造商:TAI-SAW 制造商全稱:TAI-SAW 功能描述:SAW Filter 941.5MHz For EGSM SMD 3.0×3.0 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。