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Low-Noise Wide-Band Cooled amplifiers with InP Transistors

Low-Noise Wide-Band Cooled amplifiers with InP Transistors. Juan Daniel Gallego Puyol Francisco Colomer Isaac López Fernández Alberto Barcia. OUTLINE. Previous experience Technical details Deliverables Schedule Manpower. Experience in Cryogenic Amplifiers (1).

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Low-Noise Wide-Band Cooled amplifiers with InP Transistors

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  1. Low-Noise Wide-Band Cooled amplifiers with InP Transistors Juan Daniel Gallego Puyol Francisco Colomer Isaac López Fernández Alberto Barcia Oxford

  2. OUTLINE • Previous experience • Technical details • Deliverables • Schedule • Manpower Oxford

  3. Experience in Cryogenic Amplifiers (1) • More than 150 cryogenic LNAs for different applications: • IRAM: Grenoble, PdB interferometer, 30m (IF amplifiers) • HERSCHEL: • DMs for mixer groups (CALTECH, DEMIRM, IRAM, JPL, KOSMA, SRON) • DMs Delivered (QMs, FMs, FSs in ALCATEL) • ALMA: Development of 4-8 and 4-12 GHz amplifiers • CFA: Harvard, USA SMA • ARECIBO, Puerto Rico • BORDEAUX Observatory • EMCOR (Atmospheric sensing) • CAY: VLBI receivers (X and K band) • ESOC: X-band for Deep Space Antennas Oxford

  4. Experience in Cryogenic Amplifiers (2) • Wide experience with HEMT devices • More than 30 batches of commercial GaAs transistors tested • Several models of InP transistors measured • JPL-TRW (CHOP program): 14 batches, 9 models • ETH Zurich: 7 batches, 4 models • HRL: 2 batches, 3 models • Chalmers University: 1 batch Oxford

  5. TRW T-42 CRYO3 • 200×0.1 μm gate • Best performance TRW T-45 CRYO4 • 200×0.1 μm gate • Used in DMs • Space qualified, to be used in HIFI • CHOP developed ETH T-35 • 200×0.2 μm gate • Experimental transistor • Design by request Transistors 0.19 mm 0.22 mm Oxford

  6. MICROTECH DC connector 1 2 3 Output matching circuit SMA connector Input matching circuit Interstage matching circuits Transistor area detail.See source inductive feedbackand drain resistive loading ETH transistorwith bonding wires Bias cavity with biasing circuits Oxford

  7. YCA 2000 (4-8 GHz) Oxford

  8. YCA 2000 (4-8 GHz) Oxford

  9. AMSTAR Deliverables • Amplifier for 2.1.1 80-116 GHz 3mm mixers (IRAM) • One unit • IF=4-8 GHz, 3 stages • Due mid 2005 • Amplifier for 2.1.3 0.5 mm mixer (SRON-TuD) • One unit • IF=4-8 GHz, 3 stages • Due mid 2005 • Amplifier for 2.4.1 4-pixel 3 mm test array (IRAM-RAL) • One unit ? (re-use of 2.1.1) Oxford

  10. AMSTAR Schedule and Milestones Oxford

  11. AMSTAR Manpower Oxford

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