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

FEU
FEU
FEU
FEU

LO1
LO1
LO1
LO3

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Poster frequency exetnsion-080210

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frequency extension

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Poster frequency exetnsion-080210

  1. 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 FCU Embedded controller 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 FCU FCU FCU FCU LO3 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 Rev. 080210 Sagax, Ltd. Ltd. Haller u. 11-13. 111096 Budapest, HUNGARY

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