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Frequency extension
Frequency extension TX/RX radio front-ends for VHF/UHF range
RF
IN

FEU
FEU
FEU
FEU

LO1
LO1
LO1
LO3

IF
OUT

FCU
FCU
FCU
FCU

LO1
LO1
LO1
LO2

LO1
LO1
LO1
LO1

From the universal
common structure
specialized font-end
tuners could derive

RF
IN

Embedded
controller

FCU

LO2

IF
OUT

LO1

VHF TX/RX
front-end

RF
OUT

FEU
FEU
FEU
FEU

FCU
FCU
FCU
FCU

IF
IN

The main function of the frequency extension radio front-end is the
frequency conversion between the radiated (RF) and digitally
processed (IF) frequency domain

UHF multi-channel
RX front-end

RF
IN

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.

FCU

RF
OUT

FEU
FEU
FEU
FEU

LO3

FCU
FCU
FCU
FCU

LO2

IF
IN

IF
OUT

LO1

Performance of the local synthesizers
The local frequency
synthesizers of our tuners
are optimized for wide
tinning bandwidth for fast
frequency changing
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

Analysis of 4Mcps wideband DSSS signal
using DCU-214 based spectrum analyser

4 channel coherent
VHF/UHF
(20-3000MHz)
RX front-end

Tuner control software as Windows based GUI

www.sagax.hu

UHF (20-3000MHz) single ch. RX

Microwave 24GHz) single ch. RX/TX

Sagax, Ltd.
Ltd.
Haller u. 11-13.
111096 Budapest, HUNGARY

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Poster frontends-070624

  • 1. Frequency extension Frequency extension TX/RX radio front-ends for VHF/UHF range RF IN FEU FEU FEU FEU LO1 LO1 LO1 LO3 IF OUT FCU FCU FCU FCU LO1 LO1 LO1 LO2 LO1 LO1 LO1 LO1 From the universal common structure specialized font-end tuners could derive RF IN Embedded controller FCU LO2 IF OUT LO1 VHF TX/RX front-end RF OUT FEU FEU FEU FEU FCU FCU FCU FCU IF IN The main function of the frequency extension radio front-end is the frequency conversion between the radiated (RF) and digitally processed (IF) frequency domain UHF multi-channel RX front-end RF IN 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. FCU RF OUT FEU FEU FEU FEU LO3 FCU FCU FCU FCU LO2 IF IN IF OUT LO1 Performance of the local synthesizers The local frequency synthesizers of our tuners are optimized for wide tinning bandwidth for fast frequency changing 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 Analysis of 4Mcps wideband DSSS signal using DCU-214 based spectrum analyser 4 channel coherent VHF/UHF (20-3000MHz) RX front-end Tuner control software as Windows based GUI www.sagax.hu UHF (20-3000MHz) single ch. RX Microwave 24GHz) single ch. RX/TX Sagax, Ltd. Ltd. Haller u. 11-13. 111096 Budapest, HUNGARY