STAR Light PDR 3 October 2001 STARLight RF

STAR Light PDR – 3 October 2001 STARLight RF RECEIVER Line van Nieuwstadt 734 -615 -2252, linevn@umich. edu Objective To design, build and test RF front end receiver as small as possible, meeting requirements and within budget. Strategy Parts search and noise budget iterations STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 1

STAR Light PDR – 3 October 2001 STARLight Outline: • Requirements & Noise Budget • Block Diagram • Component Selection and Trade-offs • Component Testing and Summary • Test plan for 2 -channel propotype STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 2

STAR Light PDR – 3 October 2001 STARLight Requirements (from Noise Budget) Frequency NF Gain Pdc Size Weight Temp STARLight PDR 3 Oct ‘ 01 : 1. 4135 GHz +/- 10 MHz : 2. 5 d. B : ~ 90 d. B : < 8. 5 Watts : ~ 5” x 1. 5” (12. 5 cm x 4 cm) : < 300 gr. : – 30 C to +40 C (operating) L. van Nieuwstadt Receiver - Page 3

STAR Light PDR – 3 October 2001 STARLight Block Diagram Cold Cal Load SP 4 TSwitch IRF LNA AMP IRF AMP Antenna AMP PSF A/D 8 -way Power Divider A Noise Diode A 8 -way Power Divider B STARLight PDR 3 Oct ‘ 01 Noise Diode B L. van Nieuwstadt Receiver - Page 4

STAR Light PDR – 3 October 2001 STARLight DC Power Summary: STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 5

STAR Light PDR – 3 October 2001 STARLight Selected parts specs: AMP: MAAM 12000 -A 1 Freq. Gain NF VSWR P 1 d. B Pdc Temp. : 1. 2 – 1. 75 GHz : 26 d. B +/- 0. 8 d. B : 1. 35 d. B : 1. 4: 1 : 14 d. Bm : 5 V @ 85 m. A (0. 43 W) : -55 C to +125 C Power Divider: MECA 808 -2 -1. 400 Frequency Insertion Loss Ampl. Imbalance Phase Imbalance VSWR Port-to-port isol. Temperature Size STARLight PDR 3 Oct ‘ 01 : 0. 8 - 2 GHz : 0. 8 d. B (above 9 d. B) : 0. 2 d. B : 8 degrees : 1. 2: 1 : 22 d. B, adjacent : -55 C to +70 C : 4. 5” x 4” x 0. 44” LNA: Miteq AFSM 2 Freq. Gain NF VSWR Pdc Temp. : 1. 0 – 2. 0 GHz : 25 d. B +/- 1 d. B : 0. 8 d. B : 1. 4: 1 @ 1. 5 GHz : 12 V @ 90 m. A (1. 1 W) : -55 C to +85 C PSF: IMC 930307 ceramic Freq I. L. VWSR Rejection Temp. : 1413. 5 MHz +/- 10 MHz : 3 d. B : 1. 75: 1 : 1393. 5 MHz, 32 d. B min. 1433. 5 MHz, 30 d. B min : -30 C to +40 C Noise Diode: NC 302 L Frequency : 10 Hz - 2 GHz Pdc : 6 – 8 V @ 6 m. A Output ENR : 30 – 35 d. B L. van Nieuwstadt Receiver - Page 6

STAR Light PDR – 3 October 2001 STARLight Test Plan/Procedure/Fixtures - Components: • Procure selected components (LNAs, filters, power dividers) • Design and fabricate test fixtures • Assemble engineering test devices (Miteq and Ma/Com LNAs, PSF filters) • Test components over temperature: -30 C to +40 C STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 7

STAR Light PDR – 3 October 2001 STARLight Test Plan/Procedure/Fixtures: STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 8

STAR Light PDR – 3 October 2001 STARLight Test Plan/Procedure/Fixtures: STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 9

STAR Light PDR – 3 October 2001 STARLight Test Results Summary - Components: • Miteq LNA: Good NF (<0. 7 d. B), burn-in is necessary, requested pricing/delivery info from vendor • Ma/Com LNA: Linear gain vs. temperature curves, purchased fifty amplifiers for instrument built • PSF Filters: Mounting and test fixture problems solved, very small filter-to-filter variation • 8 -way Power Dividers: Selected MECA power divider STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 10

STAR Light PDR – 3 October 2001 STARLight Test Results Summary - Components: STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 11

STAR Light PDR – 3 October 2001 STARLight Test Results Summary - Components: STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 12

STAR Light PDR – 3 October 2001 STARLight Test Results Summary - Components: STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 13

STAR Light PDR – 3 October 2001 STARLight Test Results Summary - Components: STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 14

STAR Light PDR – 3 October 2001 STARLight Test Plan for 2 -Channel Prototype Radiometer: • Implement RF test ports in the receiver box • Measure NF of RF front ends (switches, IRF, LNA) • Measure S-parameters of RF front ends and gain block, at Troom and over operating temperature • Test fringe-washing function over temperature STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 15

STAR Light PDR – 3 October 2001 STARLight PDR 3 Oct ‘ 01 L. van Nieuwstadt Receiver - Page 16