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Testing Low-Loss Microstrip Materials with MKIDs for Microwave Applications

Journal Article · · Journal of Low Temperature Physics
 [1];  [2];  [3];  [2];  [3];  [4];  [4];  [4];  [4]
  1. Vanderbilt Univ., Nashville, TN (United States); Univ. of Chicago, IL (United States)
  2. Univ. of Chicago, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
  3. Argonne National Laboratory (ANL), Argonne, IL (United States)
  4. Univ. of Chicago, IL (United States)
+ Show Author Affiliations
Future measurements of the millimeter-wavelength sky require a low-loss superconducting microstrip, typically made from niobium and silicon-nitride, coupling the antenna to detectors. Here, we propose a simple device for characterizing these low-loss microstrips at 150 GHz. In our device we illuminate an antenna with a thermal source and compare the measured power at 150 GHz transmitted down microstrips of different lengths. The power measurement is made using Microwave Kinetic Inductance Detectors (MKIDs) fabricated directly onto the microstrip dielectric, and comparing the measured response provides a direct measurement of the microstrip loss. Our proposed structure provides a simple device (4 layers and a DRIE etch) for characterizing the dielectric loss of various microstrip materials and substrates. We present initial results using these devices. We demonstrate that the millimeter wavelength loss of microstrip lines, a few tens of millimeters long, can be measured using a practical aluminum MKID with a black body source at a few tens of Kelvin.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
2329399
Journal Information:
Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 5-6 Vol. 209; ISSN 0022-2291
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

References (11)

Equivalence of the Effects on the Complex Conductivity of Superconductor due to Temperature Change and External Pair Breaking journal January 2008
Kinetic Inductance Detectors journal January 2012
Advanced ACTPol Multichroic Polarimeter Array Fabrication Process for 150 mm Wafers journal March 2016
Fabrication of Detector Arrays for the SPT-3G Receiver journal May 2018
Low-loss single-photon NbN microwave resonators on Si journal August 2019
ANTENNA-COUPLED TES BOLOMETERS USED IN BICEP2, Keck Array , AND SPIDER journal October 2015
Two-level states in glasses journal December 1987
Two Level System Loss in Superconducting Microwave Resonators journal June 2011
Multichroic dual-polarization bolometric detectors for studies of the cosmic microwave background conference October 2012
Detector architecture of the cosmology large angular scale surveyor conference September 2012
CMB-S4 Science Book, First Edition report October 2016

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Related Subjects

47 OTHER INSTRUMENTATION
CMB
MKIDs
dielectric
loss