poster frequency exetnsion-080210
DESCRIPTION
frequency extensionTRANSCRIPT
www.sagax.huwww.sagax.huSagax, Sagax, LtdLtd..
HallerHaller u. 11u. 11--13.13.
1096 Budapest, HUNGARY1096 Budapest, HUNGARY
Frequency extensionFrequency extension
FCUFEUFCUFEUFCUFEU
LO1LO1LO1LO1
FCU
Embeddedcontroller
LO1LO1LO1LO3
FEU
LO1LO1LO1LO2
FCUFEUFCUFEUFCUFEUFCUFEU
RFIN
RF
OUT
IFOUT
IF
IN
LO1
FCU
LO2
FCU
RF
IN
RF
OUT
IF
OUT
IF
IN
FCUFEUFCUFEUFCUFEU
LO1
FCU
LO3
FEU
LO2
RFIN
IFOUT
Performance of the local synthesizers
Frequency extension TX/RX radio front-ends for VHF/UHF range
The main function of the frequency extension radio front-end is the frequency conversion between the radiated (RF) and digitally
processed (IF) frequency domain
From the universal
common structure
specialized font-end
tuners could derive
The universal structure is based on a triple-conversion heterodyne
frequency translator with some receive and transmit channels with independent or phase coherent common local synthesizers and
embedded controller.
Analysis of 4Mcps wideband DSSS signal
using DCU-214 based spectrum analyser
The local frequency synthesizers of our tuners
are optimized for wide tinning bandwidth for fast
frequency changing
VHF TX/RX
front-end
UHF multi-channel
RX front-end
Typical frequency settling
time measurement result
(15us time for 2MHz step)
Typical phase noise
measurement result
(-100dBc/Hz @10KHz)
Typical physical implementations
VHF (20-520MHz)
single channel
TX/RX front-end
4 channel coherent
VHF/UHF
(20-3000MHz)
RX front-end
Tuner control software as Windows based GUI UHF (20-3000MHz) single ch. RX Microwave 24GHz) single ch. RX/TX
Rev. 080210