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Integrated Submillimeter and Terahertz Receivers with Superconducting Local Oscillator. V.P. Koshelets , S.V. Shitov, P.N. Dmitriev, A.B. Ermakov, L.V.Filippenko, O.V. Koryukin, A.S. Sobolev, M.Yu. Torgashin Institute of Radio Engineering and Electronics (IREE), Moscow, Russia

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integrated submillimeter and terahertz receivers with superconducting local oscillator
Integrated Submillimeter and Terahertz Receivers with Superconducting Local Oscillator

V.P. Koshelets, S.V. Shitov, P.N. Dmitriev, A.B. Ermakov, L.V.Filippenko, O.V. Koryukin, A.S. Sobolev, M.Yu. Torgashin

Institute of Radio Engineering and Electronics (IREE), Moscow, Russia

T. de Graauw, W. Luinge, R. Hoogeveen, P. Yagoubov

National Institute for Space Research (SRON), the Netherlands

Björkliden, Sweden

integrated submillimeter and terahertz receivers with superconducting local oscillator outline
Integrated Submillimeter and Terahertz Receivers with Superconducting Local OscillatorOutline

·       Superconducting Integrated Receiver (SIR) – Introduction

·        SIR - State of Art

·        FFO Phase Locking; Phase Noise

·        SIR with Phase Locked FFO – First Implementation

·        TErahertz LImb Sounder (TELIS)

·        Optimization of the FFO for TELIS

·        1 THz SIR - Prospects and Limitations

·        Conclusion

Björkliden, Sweden

integrated submm wave receiver
Integrated Submm Wave Receiver
  • Single chip SIS receivers with superconducting FFO has been studied at frequencies from 100 to 700 GHz
  • A DSB receiver noise temperature as low as 90 K has been achieved at 500 GHz
  • 9-pixel Imaging Array Receiver has been successfully tested
  • Phase Locking (PLL) up to 700 GHz

POSSIBLE APPLICATIONS

  • Airborne Receiver for Atmospheric Research and Environmental Monitoring; Radio Astronomy
  • Large Imaging Array Receiver
  • Laboratory General Purpose MM & subMM Wave Receiver

Björkliden, Sweden

integrated receiver microcircuits

LO feeder

(4 μm wide

microstrip line)

Antenna tuner

Antenna - 1

LO injector

(1 μm wide /4

microstrip line)

SIS junction

1 μm x1 μm

DC bias/IF output & control line for Josephson noise suppression

Antenna - 2

Antenna tuner

Integrated Receiver Microcircuits

20 m

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replaceable module of the 500 ghz imaging array superconducting integrated receiver
Replaceable Module of the 500 GHz Imaging Array Superconducting Integrated Receiver

Björkliden, Sweden

sir noise temperature
SIR Noise Temperature

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flux flow oscillator
Flux Flow Oscillator

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ffo sis frequency control

FFO frequency

265 GHz

437 GHz

570 GHz

670 GHz

FFO + SIS; Frequency Control

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ffo sis power control
FFO + SIS; Power Control

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example of ffo spectrum
Example of FFO Spectrum

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phase noise of the pl ffo
Phase Noise of the PL FFO

Björkliden, Sweden

slide18

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Microcircuit of the superconducting integrated receiver with phase-locked Josephson oscillator.The chip size is 4 mm by 4 mm.

Björkliden, Sweden

spectral line of so 2 at 326 867 ghz detected by sir with phased locked ffo and processed by aos
Spectral line of SO2 at 326.867 GHzdetected by SIR with phased-locked FFO and processed by AOS

Björkliden, Sweden

telis
TELIS
  • Acronym:TErahertz LImb Sounder
  • Balloon instrument on board the MIPAS gondola, IMK Karlsruhe
  • Threeindependent frequency channels, cryogenic heterodyne receivers:
    • 500 GHz by RAL
    • 500-650 GHz by SRON-IREE
    • 1.8 THz by DLR (PI)

Björkliden, Sweden

telis objectives
TELIS Objectives
  • Measure many species (together with MIPAS-B), for atmospheric science
  • Serve as a test platform

for new sensors

  • Serve as validation tool

for future satellite missions

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telis sir main parameters
TELIS-SIR Main Parameters

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flux flow oscillator1
Flux Flow Oscillator

RdB = V/ IBRdCL = VFFO/ICL

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r d cl as a function of r d
RdCL as a function of Rd

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normalized ffo linewidth
Normalized FFO Linewidth

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normalized ffo linewidth1
Normalized FFO Linewidth

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ffo linewidth on r d r d cl
FFO Linewidth on (Rd + RdCL)

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ffo linewidth design issue
FFO Linewidth (Design issue)

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free running ffo linewidth and spectral ratio of the pl ffo as a function of the ffo frequency
Free-running FFO linewidth and spectral ratio of the PL FFO as a function of the FFO frequency

Björkliden, Sweden

1 thz nb alox nb sis mixer with double dipole antenna and nbtin sio 2 al tuning microstrip
1 THz Nb-AlOx-Nb SIS-mixer with Double-dipole Antenna and NbTiN/SiO2/Al Tuning Microstrip

Björkliden, Sweden

nb aln nbn junctions
Nb-AlN-NbN Junctions

Björkliden, Sweden

thz sir possible implementations ffo mixer
THz SIR – Possible Implementations FFO Mixer
  • NbN-MgO/AlN-NbN NbN-MgO/AlN-NbN

Vg up to 6 mV (1.5 THz) PLO 2 (1 W at 1 THz)

  • NbN-MgO/AlN-NbN Phonon Cooled NbN HEB

PLO0.1 W ( independent)

TR  700 K at 1.5 THz

  • Stacked NbN-MgO-NbN Phonon Cooled NbN HEB

frequency up to 3 THz

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conclusion
Conclusion
  • Optimization of of a Nb-AlOx-Nb Flux-Flow Oscillator design along with a development of the wide-band PLL system allow us to realize a FFO phase locking to a reference oscillator in the frequency range from 250 to 715 GHz. The measured absolute FFO phase noise is as low as –93dBc/Hz at 1 MHz offset below the 450GHz carrier. This fits the requirements for most practical applications.
  • The first implementation of a Superconducting Integrated Receiver (SIR) with phased locked FFO has been tested with a resolution better than 10 kHz. The phased locked SIR has been tested successfully as a laboratory spectrometer. This study provides an important input for future development of a balloon-based 500-650 GHz integrated receiver for the Terahertz Limb Sounder (TELIS) scheduled to fly in 2005-2006.
  • Receiver DSB noise temperature below 300 K has been achieved in the frequency range 850-970 GHz. Phase locking of a FFO with NbN electrodes has been demonstrated. Possible implementations of a SIR for operation at frequencies above 1 THz have been proposed.

Björkliden, Sweden

sron iree and ral receivers
SRON-IREE and RAL Receivers

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ratio of pl and total ffo power
Ratio of PL and total FFO power

Eff. PLL BW (MHz)

FFO LW (MHz)

Björkliden, Sweden

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