EMBRACE receiver 8th SKADS Board Meeting Château de Limelette, Belgium, 3 November 2009 DS5 EMBRACE IRA&ASTRON DS5 Eng. Group Presentation by Jader Monari
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.
Final Control & Downconversion Unit Down conversion 48V DC BiasControlFilter
Conclusion All the specifications have been fulfilled All the tasks (i.e. LO noise phase measure and distribution chain design) and test have been accomplished Special efforts have been devoted to lower the costs. Final integration respects all the performances measured for the prototypes