A NETWORK ANALYZER CALIBRATION USING REDUNDANCY H. B. Sequeira, M. W. Trippe, and R. Jakhete ABSTRACT A calibration procedure for phasor network measurements has been developed in which redundancy is exploited to: (i) provide integral calibration assurance, (ii) render the procedure tolerant to the measurement environment, and (iii) simplify the fabrication requirements on calibration sta

A COPLANAR WAVEGUIDE ANTENNA FOR MMICs D. H. Evanst and P. J. Gibsont ABSTRACT The coplanar patch antenna is a recent addition to the range of planar radiators. This paper presents some results for this type of antenna. It has good front to back ratio (15 dB) and low cross polarisation (-20 dB) performances and these have been achieved by exploiting the lens like effects of the high dielectric

A RADIAL LINE SLOT ANTENNA FOR DBS RECEPTION Makoto Ando*~ Hideo Naohisa Goto Sasazawa*, Satoshi Nishikata*, Yasuhide Oshima* and ABSTRACT A Radial Line Slot Antenna (RLSA) is a novel planar array. This paper discusses the key design of RLSA, that is, the suppression of reflection in the antenna and the slot coupling control. Excellent performances,the antenna gain of 36.3dBi and the efficiency

A NEW METHOD FOR COMPUTING PARAMETERS OF RADIATING WAVEGUIDE SLOTS G. Lodone :t: COUPLING AND ABSTRACT Waveguide slots are widely used as coupling and radiating structures of array antennas ([1],[4],[7]).In the design practice one usually has to cope with some strange behaviour that often arises from undesired coupling .In order to predict unwanted results, a computational tool aimed toward thi

A HIGH-EFFICIENCY FLAT PLATE ARRAY FOR DIRECT BROADCAST SATELLITE APPLICATIONS R. M. Sorbello,* A. I. Zaghloul,* J. E. Effland, and D. F. DiFonzo ABSTRACT The design and performance of a low-cost, lightweight, high-efficiency flat plate array for receive-only satellite applications are described. The design is based on work performed at COMSAT Laboratories that has led to the development of nove

THE PLANAR ARRAY ANTENNAS FOR ERS-1 THE EUROPEAN REMOTE SENSING SATELLITE Robert Petersson, * Per Ingvarson * ABS'.mACT '!be imaging and scatterometer radar systems for ERS-l require a total of four planar arrays. The arrays are of the slotted waveguide type and operate at 5.3 GHz. They have been electrically designed. and measured by ERICSSON RADAR ELECTRONICS AB. 

GaAs FET SAMPLING-PHASEDETECTORSPHASE LOCKINGDR AND YIG OSCILLATORS M. Amati, A. Bernasconi (*) ABSTRACT We developed four L-band Dielectric Resonator Oscillators (DRO) and a wide-band tunable YIG Oscillator (5 to 6 GHz), each phase-locked to VHF reference frequencies by means of a Sampling-Phase Detector (SPD), obtaining small size devices with good frequency stability and noise performances.

A LOW NOISE UHF SURFACE TRANSVERSE WAVE OSCILLATOR L. Eichinger, * B. Fleischmann, ** J. Hausner, * P. Russer *, R. Weigel * ABSTRACT A hybrid oscillator at 1.98 GHz has been developed using acoustic surface transverse wave (STW) delay lines operating at the third harmonic as the frequency controlling element. The STW delay lines were fabricated on 37.5° rotated Y-cut quartz substrates

NONLINEAR J. Hausner, APPROACH R. Olbrich, FOR THE OPTIMIZATION OF A DRO AT 10.4 GHz * G. * P. Russer * and A. A. Valenzuela * ABSTRACT This paper describes the design of a lO.4 GHz dielectric resonator stabilized oscillator. The DRO was designed using linear theory and then optimized for power and noise using nonlinear theory based upon the transistor's small signal S-parameters at the

NEW TYPE OF VC DRO Z.Golubicic* V.Stoiljkovic* ABSTRACT A new type of VC DRO is described. The electronic tuning of the resonant frequency is performed by perturbing the electromagnetic field above the DR. A frequency shift of 30 MHz at about 8 GHz has been obtained. The mechanically tuning bandwtdth ratio is greater than 8%. According to measured DR characteristtcs the performances of VC DRO ha