TECHNICAL PROGRAM SUMMARY Room MOl'i'DA Y, MAY 7 TUESDAY, MAY 8 WEDNESDAY, MAY 9 THL'RSDAY, MAY 10 MORNING SESSIONS ***** 8:15AM · 12:00 Noon ***** ........................................................................***** l .....................................................'I ..................................................... , ................................................... .. • . i26 Numerical Methods . i i . W107 H~ Numerical Methods I ; A & s· . ; ,64 Numerical Methods III ; ; ntennas cattermg ; ; ................. .; ..................................................... i···· .. ······· ........................................ ;..................................................... i .................................................... Wl0 i T. D . M h d I i27 Numerical Methods i i"65 Numerical Methods 3 ; 2 1me omam et o s ; G I ; ; PDE/MOM J. ................. i ..................................................... !......... en era ................................. ~ ..................................................... : W116 !3M. t . A t !28 Analysis of Microstrip j ! 1 1cros rip n ennas i Antennas ! 1:~::11:Jw.~ij~fi~j:p~~ ii ==,,,. ::~~~i::::: :[~?.:~~~~~~:~~~!.::~:~~~~:::::::::-r· Wl09 !5 Freq Selective Surfaces j30 Chiral Media ........................................................................ ,; .................................................... W102 ~6 Transients 131 Guiding Structures I ~~1111,1~ri~ey[iji~@) ................. 1..................................................... .,,==========""' 2 70 WlOS !7 Reflector Antennas I ij···········-~-;_:_:_.:~_;~_::_;:_;:_~_::_;_;_••.:.••.••.ijijM~~{ f :t;ua:iu~::'ysis & ................. i..................................................... !;! ..................................................... W106 !8 Adaptive Arrays I j33 Antenna Analysis II 71 Beam WG & Reflectors ................. .; ..................................................... i..................................................... ................................................... .. w § . !34 Ray & Asymptotic jn Rough Surface Scat 108 :9 Electromagnetic Scattering: M h els I ·73 s tt · d D.tT ................. !..................................................... ).......... et. o ................................... ~ ..................................................... j. ....... ca .. er1ng an....... •.............. ho Compact Range and i35 TD Numerical Methods i i T . M t W115 § NF Measurements 136 Device & Mtl Meas.II ! !74 rans1ent easuremen s ................. .; ...................................................................................................................................................................................................................... W104 ht Wire Antennas !37 EM Coupl.& Shielding ! !75 Asymptotic Techniques ....................................................................... i··· .................................................. ,i ..................................................... i .................................................... !12 Microwave Imaging and !38 Polarimetric ! !76 Polarimetric Probing of WllO i Holography i Measurements ! ! Distributed Media ......................................................................................................................................................................................................................................... WlOl i13 Electromagnetic Topics ! ! ! NATIONAL ACADEMIES OF SCIENCE AND ENGINEERING NATIONAL RESEARCH COUNCIL OF THE UNITED ST ATES 1990 RADIO SCIENCE MEETING PROGRAM AND ABSTRACTS SPONSORED BY THE UNITED STATES NATIONAL COMMITTEE FOR URSI DALLAS, TX MAY 6-11, 1990 WELCOME TO DALLAS On behalf of the symposium steering committee, I extend a wann welcome to big 'D'. This year, the AP-S and URSI organizations join with the Microwave Theory and Techniques Society (MTT-S) for the AP-SNRSI/MTT-S Joint International · Symposium. More than one-third of the AP-S and URSI members are also members of the MTT society and likewise more than one-third of the AP-S chapters worldwide are joint MTT-S/AP-S chapters. The societies share a common heritage and continue to benefit from the advances occurring in shared technologies. It is therefore natural for the societies to have a "get together" once a decade (last one held at Los Angeles in 1981) to assess the state of common technologies. A record of 850 papers, evenly split between APS and URSI, were submitted for review by the Technical Program Committee. As in the past, papers will be presented on a wide range of topics with the strongest concentration in EM theory, numerical methods, scattering and diffraction, microstrip antennas, reflectors, antenna theory, and phased arrays. Special Sessions honor the contributions of Professors Leopold Felsen of the Polytcclmic University and Y.T. Lo of the University of Illinois. In addition there arc focused Special Sessions on polarimetrics, superconductivity, digital beamfonning, scattering from antennas, innovations in EM education, fiber optic applications to phased arrays, millimeter wave components and phased arrays, time domain analysis of planar circuits, the role of analysis in the age of computers, and reducing the operation count in EM modeling. A highlight of the technical program will be the plenary session held jointly with the MTT Society. Our plenary speakers; Dr. Harold Sobol of the University of Texas at Arlington, Dr. Robert Mailloux of Rome Air Development Center and Mr. Richard Mathison of Jet Propulsion Laboratory will give their views on how different technologies will be merging in the coming decade to influence systems of the next generation. Eight short courses and workshops will be held on Friday. They include, Application of Lightwave Technology to Microwave Antennas, Computer Application in EM Education, EM Modeling Software Validation: Benchmark Solutions, Broadband Low-Profile Antennas, Analysis and Design of Microstrip Antennas, Finite Element Methods, State of the Reflector Antenna Art in the l 990's, and Fundamentals of Microwave Radomes. The social program is packed with both daytime and evening evenL~. The kick-off event will be the AP-SNRSI reception at the Dallas Convention Center on Sunday evening. On Monday there will be a Horizon House reception at Longhorn Ballroom. The awards banquet will be on Tuesday night. Finally on ·Wednesday, you will have an opportunity to spend an evening at a Texas Ranch. This outstanding program is possible only by the contributions of the authors and the dedicated work of several steering committee members I want to express my thanks to all of them. Shashi Sanzgiri Chainnan, Steering Committee 1990 AP-S/URSI SYMPOSIUM STEERING COMMITTEE From left to right, back row Dave Townsend (Data Base), Tom Dover (Workshops and Short Courses), Jeff Vann (Local Arrangements), Robert Voges (Vice-Chairman), William Kermedy (Finance), Doug Fowler (Local Arrangements), Sam Buchmeyer (Publications), front row Kurt Hollenbeck (Publicity), Shashi Sanzgiri (Chairman), Eldon Gordon (Secretary), Oren Kesler (Technical Program). Nol Pictured Charles Rhoads (Registration), Don Wilton (URS! Liaison), Stuart Long (Member at Large), Lee Allen (Symposium Secretary) .i 1990 AP-S/URSI SYMPOSIUM STEERING COMMITTEE General Chairman Shashi Sanzgiri Vice Chairman Secretary Technical Program J,'inance Robert Voges Eldon Gordon Oren Kesler William Kennedy Publicity Publications Local Arrangements Member at Large Kurt Hollenbeck Sam Buchmeyer Doug Fowler Stuart Long Registration URSI Liaison Symposium Secretary Charles Rhoads Donald Wilton Lee Allen TECHNICAL PROGRAM COMMITTEE Oren B. Kesler, Chairman Tom Dover Don Wilton Doug Fowler Robert Voges Shashi Sanzgiri Reviewer Subcommittee Constantine Balanis R. M. Bevensee Andrew Blanchard Wolfgang M. Boerner David G. Burks Ahay Chakrabarty Kai Chang Tom Dover' Henry Eilts Allen Glisson K. C. Gupta Jeffrey Herd W. J. R. Hoefer D. R. Jackson W. A. Kennedy Oren Kesler Jacob J. Kim S. J. Kubina Sharad Laxpati Randall E. Lehmann Charles S. Liang Stuart A. Long Paul E. Mayes K. K. Mei E. K. Miller Pat Montgomery Bob Nevels L. Wilson Pearson Jim Prewitt Charles Rhoads F. M. Tesche Robert Voges John L. Volakis Don Wilton Hung Yee Amir L. Zaghloul Joseph R. Zinecker Dusan Zrnic Database Subcommittee Dave Townsend Lee Allen Carol Turpin Jean Costley Doris Krehmeyer URSI Digest Table of Contents Session Title Page 1 Numerical Methods I . 1 3 Microstrip Antennas . 13 6 Transients ............................................ 25 9 Electromagnetic Scattering ................................ 35 12 Microwave Imaging And Holography ......................... 47 13 Topics In Electromagnetics ................................ 55 14 Numerical Methods -II ................................... 65 19 Green's Functions ...................................... 77 21 Antenna Analysis I ...................................... 89 22 Rough Surface Scattering ................................. 93 23 Device, Material And Medium Measurements - I . 105 25 Polarization Radar Theory . 117 26 Numerical Methods - Antennas And Scattering ................. 121 30 Chiral Media . 133 31 Guiding Structures I . 145 32 Superconductive Material Characterizations And Applications . 157 33 Antenna Analysis II .................................... 161 34 Ray And Asymptotic Methods - I .......................... 171 35 Time Domain Numerical Techniques ........................ 183 36 Device, Material, And Medium Measurements IIA