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

RFOUT

IFOUT

IFIN

LO1

FCU

LO2

FCU

RFIN

RFOUT

IFOUT

IFIN

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