Biomedical Engineering Reference
In-Depth Information
(a)
Analog Amplifier
LPF (DC-100 MHz)
FPGA and ADC
(Altera Stratix II
FPGA board)
RS 232 to PC
Mixer
VCO (4 GHz)
LNAs
Narrow band
transmitter
and antenna
BPF (3.5-4.5 GHz)
UWB Rx. ANT
(b)
Top
Bottom
Fig. 5.28 a Components of the coordinator node with UWB receiver front-end made out of plug-
in RF components b UWB receiver front-end implemented on a PCB
Table 5.4 Components for UWB RF front-end designs
Functional block
Design 1
Design 2
Mixer
ZX05-63LH-S+ [
15
]
MACA-63H+ [
15
]
BPF
VBFZ-4000-S+ [
15
]
BFCN-4440+ [
15
]
LPF
VLF-105+ [
13
]
LFCN-1400+ [
15
]
VCO
ZX95-4100-S+ [
15
]
HMC391LP4 [
16
]
LNA
MGA-665P8 [
27
]
ZX60-5916 M-S+ [
15
]
Analog amplifier
THS4508 [
19
]
AD8000 [
11
]
band transmitter module directly receives data from FPGA and transmits using the
433 MHz ISM band. This is mainly used to transmit beacon messages and control
messages to the sensor nodes. The data rate of the transmitter can be varied from
19.2 kbps down to 4 kbps; hence, it is suitable for the transmission of low data rate
beacon and control messages.
