Cavendish Astrophysics Publications for author : S Withington

  1. Withington, S., 1983. Cryogenic performance of microstrip substrates. Electronics Letters, 19, 887. Link

  2. Withington, S., 1984. Cryogenic GaAs FET Amplifier. Electronics Letters, 20, 506. Link

  3. Barker, R.W., Bly, D.W.J., Cox, M.J., Hills, R.E., Murphy, J.A., Padman, R., Wilson, D.M.A., Withington, S., Vizard, D. Millimetre and submillimetre receivers for the United Kingdom Infrared Telescope. Proc. of the SPIE Conf. on Instrumentation for Submillimetre Astronomy, 598, 203-208.

  4. Withington, S., 1989. Scattering noise waves in microwave and millimetre-wave networks. Microwave J., 32, 169-178. Link

  5. Withington, S., 1988. On the feasibility of measuring transistor noise parameters with an interferometer. 18th European Microwave Conf., 713-718.

  6. Withington, S., Kollberg, E., 1989. Spectral-domain analysis of harmonic effects in superconducting quasiparticle mixers. IEEE Trans. on Microwave Theory & Techniques, MTT-37, 231-238.

  7. Withington, S., 1989. A discussion of interferometric noise-parameter measurement. Proc. of MIOP 89 Conf.

  8. Withington, S., Kennedy, P.R., 1989. An overview of superconducting nonlinear-circuit simulation. IEE Colloq. on the Microwave Applications of High Tc Superconductors, Digest No. 116., 4/1-4/3.

  9. Withington, S., Kennedy, P.R., 1991. A numerical procedure for simulating the large-signal quantum behaviour of superconducting tunnel-junction circuits. IEE Proc-G. CIrcuits, Devices ,Systems, 138, 70-76. Link

  10. Withington, S., Kennedy, P.R., 1990. Nonlinear modelling of superconducting devices and circuits. IEE Colloq. on "The Nonlinear Modelling of Microwave Devices & Circuits", Digest no. 113, 10/1-10/4.

  11. Withington, S., Kennedy, P.R., 1990. CAD of superconducting non linear circuits. Proc. 20th European Microwave Conference, Microwave Exhibitions & Publishers Ltd, 183-188.

  12. Withington, S., Murphy, J.A., 1992. Analysis of diagonal horns through Gaussian-hermite modes. IEEE Trans. on Antennas & Propagation, 40, 198-206. Link

  13. Withington, S., Murphy, J.A., Egan, A., Hills, R.E., 1992. On the design of broadband quasioptical systems for submillimetre-wave radio astronomy receivers. Int J. Infrared & Millimetre Waves, 13, 1515-1537.

  14. Murphy, J.A., Withington, S., Egan, A., 1992. Mode conversion at diffracting apertures in millimetre and submillimetre wave optical systems. IEEE Trans. on Antennas & Propagation, MTT-41, 1700-1702.

  15. Kerr, A.R., Pan, S.K., Withington, S., 1992. Embedding impedance approximations in the analysis of SIS mixers. Proc. 3rd International Symposium on Space Terahertz Technology, 394-407. Link

  16. Kerr, A.R., Pan, S.-K., Withington, S., 1993. Embedding impedance approximations in the analysis of SIS mixers. IEEE Trans. on Microwave Theory & Techniques, 41, 590-594.

  17. Murphy, J.A., Egan, A., Withington, S., 1993. Truncation in millimeter and submillimeter-wave optical systems. IEEE Trans. on Antennas & Propagation, 41, 1408-1413.

  18. Murphy, J.A., Withington, S., Gear, W.K.P., 1992. Receivers for the James Clerk Maxwell Telescope. Irish Astronomical Journal, 20, 264-269. Link

  19. Prince, J.D., Deaver, B.S., Withington, S., 1992. Detection at FIR frequencies with superconducting devices. Applied Superconductivity Conference.

  20. Withington, S., Kennedy, P.R., 1992. Recent advances in superconducting mixer simulations. 3rd International Symposium on Space Terahertz Technology, 494-501. Link

  21. Murphy, J.A., Withington, S., 1993. Truncation in millimetre and submillimetre-wave optical systems. 4th International Symposium on Space Terahertz Technology, 184-198.

  22. Withington, S., Yassin, G., 1993. Spectral domain analysis of submillimetre-wave microstrip filters. Int. J. Infrared & Millimetre Waves, 14, 1975-1984.

  23. Withington, S., Isaak, K.G., 1993. Phase retrieval at submillimetre wavelengths using Gaussian-Hermite modes. 4th International Symposium on Space Terahertz Technology, 199-210.

  24. Withington, S., Murphy, J.A., 1993. Gaussian mode analysis of "thin" mirrors. 4th International Symposium on Space Terahertz Technology, 211-222.

  25. Withington, S., Murphy, J.A., 1993. Multimode analysis of submillimetre-wave optical systems. 18th International Conference on Infrared & Millimetre Waves.

  26. Blamire, M.G., Barber, Z.H., van der Stadt, H., Wezelman, J.J., Withington, S., 1993. High quality NbN-based junctions for 500 GHz waveguide mixers. 18th International Conference on Infrared & Millimetre waves.

  27. Yassin, G., Padman, R., Withington, S., 1995. Finline mixers for imaging arrays. Multifeed systems for radio telescopes, ASP Conf. Ser. 75, D.T. Emerson, J.M. Payne, ASP, 358-362.

  28. Murphy, J.A., Withington, S., van der Stadt, H., 1995. Dammann gratings for local oscillator beam multiplexing. Multifeed systems for radio telescopes, ASP Conf. Ser. 75, D.T. Emerson, J.M. Payne, ASP, 238-244.

  29. Kennedy, P.R., Withington, S., 1990. Computer-aided modelling of superconducting devices for millimetre-wave astronomy. URSI Colloquium, NR7SC.

  30. Withington, S., Kennedy, P.R., 1990. CAD techniques for submillimetre nonlinear circuits. URSI General Assembly.

  31. Blamire, M.G., Bly, D.W.J., Padman, R., Withington, S., 1990. Submillimetre-wave receiver developments at Cambridge. URSI General Assembly.

  32. Withington, S., Murphy, J.A., Isaak, K.G., 1995. Representation of mirrors in beam waveguides as inclined phase-transforming surfaces. Infrared Physics & Technology, 36, 723-734.

  33. Murphy, J.A., Withington, S., 1996. Perturbation analysis of Gaussian-beam-mode scattering at off-axis ellipsoidal mirrors. Infrared Physics & Technology, 37, 205-219.

  34. Yassin, G., Withington, S., 1995. Electromagnetic models for superconducting millimetre-wave and sub-millimetre wave microstrip transmission lines. J. Phys. D: Appl. phys., 28, 1983-1991.

  35. Isaak, K.G., McMahon, R., Hills, R.E., Withington, S., 1994. Observations of high-redshift objects at submillimetre wavelengths. MNRAS, 269, L28-L32. Link

  36. Barker, R., Withington, S., et al. Millimetre and submillimetre receivers for the United Kingdom Infrared Telescope. Proceedings, Instrumentation for Submillimetre Spectroscopy, 598, 203-208.

  37. Withington, S., 1985. S-parameter approach to characterising noise in FETs. Proc. of CAD 85, IEEE MTT-AP in the Swedish Chapter.

  38. Prince, J.D., Deaver, B.S., Withington, S., 1993. Direct detection at FIR frequencies with niobium tunnel junctions. IEEE Trans. on Applied Superconductivity, 3, 2259-2260. Link

  39. Withington, S., Isaak, K.G., Kovtonyuk, S.A., Panhuyzen, R.A., 1994. A horn-reflector SIS mixer for 450-500 GHz. Workshop on SIS Mixers.

  40. Withington, S., Isaak, K.G., Kovtonyuk, S.A., Panhuyzen, R.A., Klapwijk, T.M., 1994. Precise beam pattern measurements at submillimetre wavelengths using superconducting tunnel-junctions. 2nd European Workshop on Quasioptics, N.J. Keene, J.W. Lamb, G.A. Ediss, Max Planck Inst. fuer Radioastronomie.

  41. Withington, S., Isaak, K.G., Kovtonyuk, S.A., Panhuyzen, R.A., Klapwijk, T.M., 1995. Direct detection at submillimetre wavelengths using superconducting tunnel junctions. Infrared Physics & Technology, 36, 1059-1075.

  42. Yassin, G., Withington, S., 1996. Losses in normal and superconducting millimetre-wave and submillimetre wave microstrip transmission lines. Third International Conference on Computational Electromagnetics, IEE, 149-154.

  43. Withington, S., Yassin, G., Buffey, M., Norden, C., 1996. A horn-reflector antenna for high-performance submillimetre wave applications. Seventh International Symposium on Space Terahertz Technology, 389-399.

  44. Yassin, G., Withington, S., Padman, R., Goodchild, M.S., Blamire, M.G., 1996. A Broad band 230 GHz antipodal finline mixer for array receivers. Seventh International Symposium on Space Terahertz Technology, 409-416.

  45. Withington, S., Yassin, G., 1996. Theoretical analysis of superconducting submillimetre-wave microstrip transmission lines. Seventh International Symposium on Space Terahertz Technology, 379-387.

  46. Withington, S., 1996. Submillimetre-wave technology for extragalactic spectral line astronomy. High-Sensitivity Radio Astronomy, Cambridge University Press.

  47. Yassin, G., Withington, S., 1996. Analytical expression for the input impedance of a microstrip probe in waveguide. Int. J. Infrared & Millimetre Waves, 17, 1685-1705.

  48. Withington, S., Yassin, G., Buffey, M., Norden, C., 1997. A Horn-Reflector Antenna for High-Performance Submillimetre-Wave Imaging Arrays. Int. J. Infrared & Millimetre Waves, 18, 341-358.

  49. Murphy, J.A., McCabe, M., Withington, S., 1997. Gaussian Beam Mode Analysis of the Coupling of Power Between Horn Antennas. Int. J. Infrared & Millimetre Waves, 18, 501-518.

  50. Yassin, G., Padman, R., Withington, S., Jacobs, K., Wulff, S., 1997. A Broadband 230 GHz Finline Mixer for Astronomical Imaging Arrays. Electronics Letters, 33, 498-500.

  51. Yassin, G., Withington, S., Padman, R., 1997. Electromagnetic analysis of tapers for finline mixers. Eighth International Symposium on Space Terahertz Technology, 344-354.

  52. Withington, S., Murphy, J.A., 1995. Multimode Gaussian Optics. 3rd International Workshop on Terahertz Electronics.

  53. Withington, S., Murphy, J.A., 1997. Modal Analysis of Partially-Coherent Submillimetre-Wave Quasioptical Systems. Eighth International Symposium on Space Terahertz Technology, 446-465.

  54. Murphy, J.A., Withington, S., 1997. Gaussian Beam Mode Analysis of Imaging Arrays. Eighth International Symposium on Space Terahertz Technology, 466-481.

  55. Withington, S., Yassin, G., 1997. An Investigation of the Input Impedance of a Microstrip probe in Waveguide. Eighth International Symposium on Space Terahertz Technology, 326-343.

  56. Murphy, J.A., Withington, S., 1998. Gaussian beam mode analysis of multi-beam quasi-optical systems. SPIE Conference on Advanced Technology MMW, Radio, and Terahertz Telescopes, T.G. Phillips, SPIE, 3357, 97-104.

  57. Withington, S., Murphy, J.A., 1998. Modal Analysis of Partially Coherent Submillimetre-Wave Quasioptical Systems. IEEE Trans. on Antennas & Propagation, 46, 1651-1659.

  58. Isaak, K.G., Hills, R.E., Withington, S., McMahon, R.G., 1996. Submillimeter observations of QSOs at redshifts z>4. Westerbork Telescope 25th Anniversary Workshop: Cold Gas at High Redshift, ASSL 206, M.N. Bremer, P.P. van der Werf, et al., Kluwer, ASSL 206, 325-329.

  59. Withington, S., 1996. Submillimetre-wave technology for extragalactic spectral line astronomy. High-Sensitivity Radio Astronomy, CUP.

  60. Murphy, J.A., Murray, K., Withington, S., 1997. Horn coupling in quasi-optical systems. 20th ESTEC Antenna Workshop on Millimetre Wave Antenna Technology, 129-136.

  61. Withington, S., Murphy, J.A., 1997. Partially coherent submillimetre-wave quasioptical systems. 5th International Workshop on Terahertz Electronics.

  62. Withington, S., Yassin, G., Buffey, M., 1997. Submillimetre-wave technology for high-redshift extragalactic spectral line astronomy. 5th International Workshop on Terahertz Electronics.

  63. Buffey, M., Yassin, G., Withington, S., 1998. A horn-reflector mixer for 350 GHz. ESA Workshop on Millimetre Wave Technology and Applications, 248-253.

  64. Lanigan, W., Colgan, R., Murphy, J.A., Withington, S., 1998. Theoretical and experimental investigation of phase gratings. International Conference on infrared and millimetre Waves.

  65. Yassin, G., Withington, S., Buffey, M., Jacobs, K., Wulff, S., 1998. A 350 GHz finline mixer fed by a horn-reflector antenna. Ninth International Symposium on Space Terahertz Technology, 205-214.

  66. Withington, S., Yassin, G., Leech, J., Isaak, K.G., 1999. An accurate expression for the input impedance of a one-sided microstrip probe in wave-guide. Tenth International Symposium on Space Terahertz Technology, 508-518.

  67. Withington, S., Yassin, G., Murphy, J.A., 1999. Propagation of submillimetre-wave beams through optical components on a reflecting table. Tenth International Symposium on Space Terhertz Technology.

  68. O'Sullivan, C., Lanigan, W., Murphy, J.A., Withington, S., 1999. Binary phase gratings for LO injection. Tenth International Symposium on Space Terahertz Technology, 358-37.

  69. Withington, S. THz technology for astronomy. J. of High-Speed Electronics and Systems, in press.

  70. Dent, W., Duncan, W., Ellis, M., Harris, J., Lightfoot, J., Wall, R., Gibson, H., Hills,. R., Smith, H., Richer, J., Withington, S., Burgess, T., Casorso, R., Dewdney, P., Hovey, G., Redman, R., Force, B., Pain, I., 1999. HARP and ACSIS on the JCMT. Imaging at Radio through Submillimeter Wavelengths, J. Mangum, S. Radford, ASP, in press.

  71. Murphy, J.A., Withington, S., Trappe, N., Colgan, R., 2000. Gaussian beam mode analysis of standing waves in quasioptical systems. Millennium conference on Antennas and Propagation AP2000, ESA-ESTEC Publications Division, SP-444.

  72. Withington, S., Yassin, G., Murphy, J.A., O'Sullivan, C.O., Atad, E., Duncan, W., Henry, D., Van de Stadt, H., Armandillo, E., De Maagt, P., Ulbrich, G., 2000. Submillimetre-wave and far-infrared optical design and analysis techniques. Millennium Conference on Antennas and Propagation AP2000, ESA-ESTEC Publications Division, SP-444.

  73. Yassin, G., Withington, S., Buffey, M., Jacobs, K., Wulff, S., 2000. A 350 GHz SIS Antipodal Finline Mixer. IEEE Trans. on Microwave Theory and Techniques, 48(4), 662-669.

  74. Isaak, K., Priddey, R., McMahon, R., Omont, A., Cox, P., Withington, S., 2000. The SCUBA -bright quasar survey (SBQS): the z>4 sample. UMASS/INOE Deep millimetre Surveys, J. Lowenthal and D. Hughes.

  75. Isaak, K.G., Withington, S., Yassin, G., 2000. An accurate method for determining the IF noise contribution to SIS heterodyne receivers. Int. J. of Infrared Millimetre waves, 21, 1427-1439.

  76. Withington, S., 1989. Near millimeter-wave techniques. Electron. Wireless World, 95, 800-804.

  77. Withington, S., and Yassin, G., 1995. A comparison of electromagnetic models for millimetre and submillimetre-wave microstrip transmission lines. Proc. 3rd International Workshop on Terahertz Electronics.

  78. Withington, S., and Murphy, J.A., 1995. Binary phase gratings for submillimetre wavelengths. Proc. 3rd International Workshop on Terahertz Electronics.

  79. Withington, S. THz Technology for astronomy. Proc. IEEE Colloquium on Terahertz Technology.

  80. Withington, S., and Murphy, J.A., 1996. Theoretical models for submillimetre-wave cameras. URSI General Assembly, (Invited Review).

  81. Withington, S., 1997. Submillimetre-wave technology for high-redshift extragalactic astronomy. In High Sensitivity Radio Astronomy, Jackson, N., and Davis, R., Cambridge Univ. Press.

  82. Yassin, G., Withington, S., 1997. Design of a broadband finline SIS mixer at 350GHz. Proc. 5th International Workshop on Terahertz Electronics.

  83. Kittara, P., Yassin, G., and Withington, S., 1999. Theoretical analysis of the Pickett Potter horn-reflector antenna for submillimetre-wave applications. Fourth High-Frequency Postgraduate Student Colloquium.

  84. Leech, J., Withington, S., and Yassin, G. A 16 element 345GHz SIS imaging array for HARP. Fourth High-Frequency Postgraduate Student Colloquium.

  85. McMahon, R.G., Priddey, R.S., Omont, A., Snellen, I., and Withington, S., 1999. Submillimetre observations of luminous z>4 radio-quiet quasars and the contribution of AGN to the submm source population. MNRAS, 309, L1-L5. Link

  86. Yassin, G., Withington, S., Kittara, P., Isaak, K.G., 1999. Theoretical analysis of the Potter horn-reflector antenna for submillimetre-wave applications. Proc. Tenth International Symposium Space Terahertz Technology, 347-357.

  87. Murphy, J.A., O'Sullivan, C.,Trappe, N., Lanigan, W., Colgan. R., and Withington, S., 1999. Modal analysis of the quasioptical performance of phase gratings. Int. J. Infrared and Millimetre Waves, 20, 1469-1486.

  88. Leech, J., Withington, S., Yassin, G., Smith, H.,Jackson, B.D., Gao, J.R., Klapwijk, T.M., 2000. A 350GHz SIS imaging module for the JCMT heterodyne array receiver programme(HARP). Proc. 11th International Symposium on Space Terahertz Technology, 105-115.

  89. Lanigan, W., Trappe, N., Murphy, J.A., Colgan, R., O'Sullivan, C., Withington, S., 2000. Quasi-optical multiplexing using reflection phase gratings. Proc. 11th International Symposium on Space Terahertz Technology, 616-625.

  90. Kittara P., Yassin, G., Withington, S., and Smith, H., 2000. A Pickett Potter horn-reflector antenna for submillimetre-wave applications. Proc. 11th International Symposium on Space Terahertz Technology, 598-607.

  91. Dicker, S., Yassin, G., and Withington, S., 2000. A two-element horn-reflector antenna for cosmic microwave background astronomy. IEEE Trans. Antennas and Propagation, in press.

  92. Withington, S., and Yassin, G., 2001. The future of superconducting microcircuits for widefield imaging at submillimetre wavelengths. Astronomical Society Pacific Conference Series: The New Era of Wide-Field Astronomy.

  93. O'Sullivan, C., Withington, S., and Murphy, J.A., 2000. Coherent and incoherent phase retrieval using Gaussian beam modes. Proc. 8th International Conference on THz Electronics, 153-156.

  94. Withington, S., Yassin, G., and Murphy, J.A., 2000. Dyadic analysis of partially coherent submillimetre-wave antenna systems. IEEE Trans. Antennas and Propagation, AP-49, in press.

  95. Kittara, P., Yassin, G., and Withington, S. The electromagnetic properties of the superconducting coplanar waveguide. Proc. 12th International Symposium on Space Terahertz Technology.

  96. Yassin, G., Jung, G., Dikovsky, V., Barboy, I., Kambara, M., Cardwell, D.A., Withington, S. Microwave propagation in high-temperature superconducting waveguides. International workshop on superconductivity and high magnetic fields.

  97. Yassin, G., Jung, G., Dikovsky, V., Barboy, I., Kambara, M., Cardwell, D.A., Withington, S., 2001. Investigation of the microwave propagation in high-temperature superconducting waveguides. IEEE Microwave and Wireless Components Letters, 11, 413-415.

  98. Withington, S., Leech, J., Yassin, G., Isaak, K.G., Jackson, B.D., Gao, J.R., Klapwijk, T., 2001. A 350GHz Radial-Probe SIS MIxer for Astronomical Imaging Arrays. Int J. Ir MM Waves, 22, In Press.

  99. Withington, S., Yassin, G., 2001. Power Coupled Between Partially-Coherent Vector Fields in Different States of Coherence. Optical Society America A, in press.

  100. Withington, S., Tham, C.Y., Yassin, G., 2002. Partially-Coherent Long-Wavelength Optical Simulation Techniques for Microwave Background Astronomy. 2K1BC Workshop Experimental Cosmology at MM Waves, Marco De Petris, Massimo Gervasi, American Institute of Physics, 616, 274-281.

  101. O'Sullivan, C., Murphy, J.A., Withington, S., Yassin, G., Atad-Ettedgui, E., Duncan, W., Henry, D., Jellema, W., van de Stadt, H., 2002. MM-Wave Optics Design and Verification. 2K1BC Workshop on Experimental Cosmology at MM Waves, Marco De Petris, Massimo Gervasi, American Institute of Physics, 616, 290-294.

  102. de Graauw, Withington, S., et. al. Heterodyne Instrument for FIRST (HIFI): Preliminary Design. The Physics and Chemistry of the Interstellar Medium, 3rd Cologne-Zermatt Symposium, V. Ossenkopf, Shaker-Verlag.

  103. Trappe, N., Murphy, J.A., Withington, S., Colgan, R. Modal Analysis of Standing Waves in Quasi-optical Systems fed by Horn Antennas. 9th International Conference on Terahertz Electronics.

  104. Kooi, J.W., Walker, C.K., Hesler, J., Withington, S. A Broadband Suspended Membrane Full-Height Waveguide Transition for THz Applications. 9th International Conference on Terhaertz Electronics.

  105. Tham, C.Y., Withington, S., Yassin, G. Computational method for partially-coherent fields in waveguide-horn bolometers. 9th Internaltional Conference on Terahertz Electronics..

  106. Withington, S., Yassin, G., 2002. Analysing the power coupled between partially coherent waveguide fields in different states of coherence. Journal Optical Society America A, 18.

  107. Withington, S., Kittara, P., Yassin, G., 2002. Non-linear Two-Frequency Analysis of SIS Mixers Through Harmonic Balance. Wolte 5, Journal De Physique IV, EDP Sciences, 12, 165-168.

  108. Yassin, G., Dikovsky, V., Barboy, I., Kambara, M., Cardwell, D., Withington, S., Jung, G., 2002. Microwave transmission through high-temperature superconducting waveguides. Physica C: Superconductivity and Applications, in press.

  109. Withington, S., Tham, C.Y., Yassin, G. Theoretical analysis of planar bolometric imaging arrays for THz imaging systems. SPIE Astronomical Telescopes and Instrumentation, spie.

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