參數(shù)資料
型號(hào)： RF-3000PCBA
廠商： RF Micro Devices, Inc.
英文描述： SPREAD-SPECTRUM BASEBAND MODEM
中文描述： 擴(kuò)譜基帶調(diào)制解調(diào)器
文件頁數(shù)： 7/28頁
文件大?。?/td> 351K
代理商： RF-3000PCBA
11-327
RF3000
Rev A4 031216
General Description
Figure 4 shows the complete 2.4GHz chipset, and where the RF3000 fits into the system. Figure 5 shows a simplified
block diagram of the RF3000. The RF3000 is a complete spread-spectrum transceiver, allowing PSK system operation.
The RF3000 performs all of the functions necessary to modulate a digital data source for transmission in a wireless envi-
ronment. The RF3000: handles preamble and header generation and extraction; automatic gain control; clear channel
assessment; antenna diversity; and, implements an equalizer to handle multi-path events at high data rates.
RX
TX
IF Amp
Filter
Filter
Selectable
LPF
TX
PA
Driver
Base Band Amp.
Active Selectable LPF
(f
C
= 1 MHz to 35 MHz)
0-30 dB Gain
RF2948
+45°
-45°
÷
2
Σ
RFMD 2.4 GHz WLAN
System Block Diagram
Fc = 2442
MHz
IF
IF
VCO
RF
VCO
RX
SAW
Fc = 374 MHz
Fc = 2442
MHz
Gain
Select
LNA
Dual Gain Modes
RF
Filter
Fc = 2442
Mhz
Antenna 2
Antenna 1
T/R
Switch
Diversity
Switch
Mode Control
DATA CLK
RX DATA
TX DATA
RX RDY
CCA
LNA GS
SPI
TX RDY
Control
Port
RXVGC
DAC
CCA
RX
VGC
Tx Length
Tx Signal
Service
802.11
Preamble/
Header
802.11
Preamble/
Header
RF3000
ANT Select
RX VGC
RX Q DATA
RX I DATA
TX I DATA
TX Q DATA
TX VGC
VREF
D
DReference
M
Q-OUT
DAC
I-OUT
DAC
TXVGC
DAC
I-IN
ADC
Q-IN
ADC
RX PE
TX PE
MCLK
VREF_1
Figure 4. 2.4GHz IEEE802.11b Chipset Diagram
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