EMBRACE receiver 8th SKADS Board Meeting Château de Limelette, Belgium, 3 November 2009 DS5 EMBRACE IRA&ASTRON DS5 Eng. Group Presentation by Jader Monari

The EMBRACE RECEIVER is high performance MHz tunable double down conversion unit to MHz IF bandwidth. The architecture, LO frequencies and RF, IF amplifiers/ filters have been selected to provide optimal noise figure, intermodulation products, dynamic range and spurious free performance. An High Selectivity Filter bank is provided to avoid undesired interferences and increase the dynamic performances. To select the right filter a control signal TTL/Open collector/dip Switched must be provided. This receiver includes PAD attenuators and equalization stages to flat the received bandwidth as better as possible. General Description

RF MHz IF MHz LO MHz LO2 2850MHz Double Conversion Input ports ESD protected with inductor RF/IF1 equalizazion RF High Selectivity Filter bank TTL/OC/Dip Sw controls Low Power for driving LO Typ 2dBm No OL Phase Noise degradation High Reliability Substrate FR4, 1.6mm, 1Oz. Cu Eurocard Standard Dimension (160x100) Main Feature

3000/Bw100150/Bw100 LO:2850 LO: 2600…1400 HighBand 1300/Bw600 MidBand 1000/Bw600 LowBand 700/Bw600 WideBand 1000/Bw1200 INPUT 400…1600 OUTPUT 150 Functional Block Diagram

Schematic Diagram

ParametersUnitsMinimumTypicalMaximum RF FrequencyMHz Input noise density dBm/Hz-151 RF Return LossdB1115 LO1 FrequenciesMHz LO1 Return lossdB915 LO1 Drive PowerdBm025 LO2 FrequencyMHz2850 LO2 Return LossdB14 LO2 Drive PowerdBm026 ParametersUnitsMinimumTypicalMaximum VccV ImA Ripple Vcc=10V to 15V Vcc=10V to 15V DC Bias Input/Output Port Specifications

ParametersUnitsMinimumTypicalMaximum GaindB RippledB±1 NFdB8< 910 Output 1 dB Compression Point Image RejectiondB>80dB Central Frequency controlNotes RF1c=1000MHzRF1BW=1200MHzRF1c±750MHz=20dB(min)00Full Band RF2c=1300MHzRF2BW=600MHzRF2c±400MHz=20dB(min)01High Band RF3c=700MHzRF3BW=600MHzRF3c±400MHz=20dB(min)10Low Band RF4c=1000MHzRF4BW=600MHzRF4c±400MHz=20dB(min)11Mid Band Final Receiver General performances are: Characteristics of the Filter Bank

Noise Figure vs selected filter

Gain Vs. selected filter

Comparision Gain Vs. selected filter (4 prototypes)

Gain Vs. frequency (Fixed LO1, Swept RF)

RF, IF, LO1 and LO2 Return Loss

Layout

Shielded Box Outline

Dwingeloo April 2007 Test for connecting the Receiver to ADC

adc. sync 200MHz*3 Rx tuned at 600MHz No Spurs with shielding …tests shown that the GSM signals (1830MHz) can be received although out of band. In order to reject them an high selectivity filter after the tile combiner is suggested.

Conclusion