First Stage Cryogenic IF Amplifier

19/04/04 HIFI Consortium Meeting UTRECHT

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Centro Astronómico de YebesObservatorio Astronómico Nacional HIFI

CAY

First Stage Cryogenic IF First Stage Cryogenic IF AmplifierAmplifier

Prepared by: Carmen Diez


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OUTLINEOUTLINE• QM Program (Alcatel)

– Amplifiers IF1 High (4-8 GHz) IF1 Low (2.4-4.8 GHz)

– Isolators – Qualification Boards

• FM Program (Alcatel)– Amplifiers

IF1 High (4-8 GHz) IF1 Low (2.4-4.8 GHz)

– Isolators • CDR Status/Management Meeting• Programmatic/financial concerns • Planning• Open Issues & Summary


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QM PROGRAM: Amplifiers: IF1 High (I)QM PROGRAM: Amplifiers: IF1 High (I)

• 2 units delivered December 2003 (EQM2 & EQM4)

• 2 units being qualified (EQM1 & EQM3) – Baseline tests done


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QM PROGRAM: Amplifiers: IF1 High (II)QM PROGRAM: Amplifiers: IF1 High (II)


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QM PROGRAM: Amplifiers: IF1 High (III)QM PROGRAM: Amplifiers: IF1 High (III)


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IF1 High (QM2): Gain & NoiseIF1 High (QM2): Gain & Noise


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IF1 High (QM2): S ParametersIF1 High (QM2): S Parameters

S22 < -15dB → Goal


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IF1 High (QM4): Gain & NoiseIF1 High (QM4): Gain & Noise


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IF1 High (QM4): S ParametersIF1 High (QM4): S Parameters

S22 < -12dB → Baseline


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IF1 High QM: Gain StabilityIF1 High QM: Gain Stability

0.01 0.1 1 101 10

5

1 104

1 103

0.01MODULE SPECTRUM

0.01

105

spn_G calk

h f k cal_g f k

2.160.011 f k


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QM PROGRAM: Amplifiers: IF1 LowQM PROGRAM: Amplifiers: IF1 Low

• Structures and Substrates being fabricated


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QM PROGRAM: IsolatorsQM PROGRAM: Isolators: Measurements: Measurements• 4 isolators measured


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QM PROGRAM: Isolators: ResultsQM PROGRAM: Isolators: Results


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QM PROGRAM: Qualification Boards

Qualification boards done and qualified

Resistors, Capacitors and

Transistors glued

Resistors and Capacitors soldered

Capacitors glued


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FM PROGRAMFM PROGRAM

• IF1 High– Structures being fabricated (problems with type of aluminium)

– Substrates being fabricated

• IF1 Low – Structures and Substrates to be fabricated once the QM units

are tested

• Isolators – To be received and measured (18 units Yebes+18 units SRON)


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CDR Status/Management Meeting (I)

• CDR held on the 9th of December 2003

• Management Meeting held on the 18th of February 2004

• Actions from CDR:

# Action Who When Status Remark

AI-1 CAY to change cryo cycle number in IF-1 specifications to 30 (Sec. 5.4.2.1)

CAY 31 Jan 04 Done

AI-2 SRON and CAY to sign IF-1 specifications CAY / SRON

31 Jan 04 Pending SRON action needed

AI-3 Alcatel to provide a manufacturing flow with enough detail to see the exact sequence of manufacturing steps including all inspection points

AEO 31 Jan 04 Done

AI-4 Alcatel to include the JPL recommended HEMT device burn-in in the manufacturing flow and to update the PID accordingly

AEO 31 Jan 04 Pending SRON to answer the Yebes proposal

AI-5 CAY to check availability and delivery dates for IF-1 low components, and to inform Alcatel

CAY 31 Jan 04 Done

AI-6 Alcatel to demonstrate compliance of bonding connections

AEO 31 Jan 04 Done


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CDR Status/Management Meeting (II)# Action Who When Status Remark

AI-8Alcatel to demonstrate component mounting with air-free Epotek

AEO 31 Jan 04 Done

AI-9 Alcatel to demonstrate mounting with air-free Ablefilm AEO 31 Jan 04 Done

AI-10 Alcatel to update the document “Thermal cycling test procedure” (doc. ref. 30007009/931).

AEO 31 Jan 04 Done

AI-11 CAY / Alcatel to provide a Design Verification Matrix to SRON.

CAY / AEO 31 Jan 04 Done

AI-12 Alcatel to include the schedule in the CDR documentation (with corresponding doc. nr.).

AEO 31 Jan 04 Done

AI-13 The HIFI Signal Chain Manager to contact Alcatel and ask for a management meeting to discuss resources and planning at Alcatel.

HIFI SCM 31 Jan 04 Done

AI-14 SRON to provide info on bake out to CAY SRON 15 Feb 04 Done

AI-15 AEO to check availability of Helicoils AEO 06 Feb Done


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Programmatic/financial concerns

2 QMs (Qual) (4-8 GHz)

2 QMs (Accep) (4-8 GHz)

7 FMs (4-8 GHz)

5 FSs (4-8 GHz) 2 FSs (2.4-4.8 GHz)

2 QMs (2.4-4.8 GHz)

4 FMs (2.4-4.8 GHz)

3 FMs (4-8 GHz)

• 2 Contracts signed:

• 1 Contract to be signed:


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CRYO IF1 (4-8 GHz) AMPLIFIER-HIFI PLANNINGCRYO IF1 (4-8 GHz) AMPLIFIER-HIFI PLANNING (I)(I)


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CRYO IF1 (4-8 GHz) AMPLIFIER-HIFI PLANNINGCRYO IF1 (4-8 GHz) AMPLIFIER-HIFI PLANNING (II)(II)


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CRYO IF1 (4-8 GHz) AMPLIFIER-HIFI PLANNINGCRYO IF1 (4-8 GHz) AMPLIFIER-HIFI PLANNING (III)(III)

Important delivery dates:

QM1 low: 19 May 2004

QM2 low: 21 May 2004

FM1 low: 14 July 2004

FM4 low: 21 July 2004

FM1 high: 7 May 2004

FM10 high: 16 June 2004


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OPEN ISSUES & SUMMARYOPEN ISSUES & SUMMARY 2 QM IF1 high units delivered December 2003 (EQM2 & EQM4) 2 QM IF1 high units being qualified (EQM1 & EQM3) QM IF1 low: Structures and Substrates being fabricated 4 QM isolators measured Qualification boards done and qualified FM IF1 High:

Structures being fabricated (problems with type of aluminium) Substrates being fabricated

FM IF1 Low: Structures and Substrates to be fabricated once the QM units are

tested Uncertainties about the performance of the IF1 low fabricated by Alcatel Alcatel delays very difficult to recover


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QM & FM PROGRAMS (First Prototype)QM & FM PROGRAMS (First Prototype)


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QM & FM PROGRAMS (First Prototype)QM & FM PROGRAMS (First Prototype)


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Industry: TTI

• Bonding machine

• Experience in cryostats

• Complete receiver with S/X cryogenic amplifiers delivered to Finland

• 8.4 K @ 8.4 GHz with Fujitsu devices

(20 h k)

7 8 9 100

5

10

15

20

10

20

30

40YTX 001

Tn

(K)

F (GHz)

Noise

Gai

n (d

B)

Gain


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Microwave Capacitors at Cryogenic Temperature


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3 4 5 6 7 8 90

5

10

15

20

25

30

YCF 2 InP devices comparisonOptimum noise bias

ETH T-35 TRW T-45 TRW T-42

Ga

in (

dB

)

Freq. (GHz)

0.0

2.5

5.0

7.5

10.0

12.5

15.0

Tn

(K

)

ETH T-35 TRW T-45 TRW T-42

TRW T-42 CRYO3 200×0.1 μm gate Best performance

TRW T-45 CRYO4 200×0.1 μm gate Used in DMs Space qualifiable, to be used in FMs CHOP developed

ETH T-35 200×0.2 μm gate Experimental transistor Design by request Used in MPAs

0.22 mm

0.19

mm Transistors

First Stage Cryogenic IF Amplifier

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