ANALYSIS MODEL FOR THE MICROSTRIP (°), D. Amandt, SLOT ANTENNA J. Hermans (°°) A. Van de Capelle ABSTRACT In this paper we present an analysis model for the microstrip slot antenna excited by a non terminated microstripline. The model is an extension of the well-known method for the analysis of the radiation by a slot in a waveguide. By application of the Lorentz reciprocity theorem we find a

A TWIN LINE OMNI-DlRECTIONAL AERIAL CONFIGURATION R. Hill* ABSTRACT Omni-directional aerials are required extensively for a variety of microwave systems such as in aircraft distance measuring equipment, sidelobe suppression of aerials for radar and radar transponders. The omni-directional aerial described in this paper provides extremely constant azimuth coverage with E vertical polarisation

A NEW TRAVELLING WAVE ANTENNA IN MICROSTRIP Wolfgang Menzel ABSTRACT: The radiation characteristics of the first higher order mode of microstrip lines are investigated. As a result, a simple travelling wave antenna element is described, having a larger bandwidth compared with resonator antennas. A method to excite the first higher order mode is shown. A single antenna element is treated theo

A NEW METHOD OF EXCITING AXIAL SLOTS CUT ON A CIRCULAR CYLINDER M. Calvo, IE J.S. Minana ~ IE ABSTRACT. A new number along slots method of exciting The interior waveguides excited its axial volume of the can the slots of the the by cylinder cut on a circular required cross the number section. by changing curved slot wall. in on an beacons more or the admittance cylinder up of slots Ea

DIFFRACTION OF A PLANE CYLINDRICAL WAVE BY A FINITE SET OF CONDUCTORS SCANNING ANTENNA. APPLICATION TO AN ELECTRONIC Yves MICHEL:' ABSTRACT. - Robert PAUCHARD:' - Paul VIDAL:' This paper describes a mathematical solution to the problem of the diffraction of an electromagnetic wave by a finite set of conductors having the form of thin wires and which are parallel to the electrical c

ELECTROMAGNETICALLY ANTENNA ELEMENTS H. George Oltman ABSTRACT COUPLED MICROSTRIP DIPOLE An electromagnetically Coupled (EMC) member of the microstrip dipole antenna family is described. Several configurations differing in the dipole location and in the amounts of electric and magnetic coupling to the microstrip feed line yield different bandwidths, efficiencies and construction simplicity. Th

BROADBAND YIG TUNED FET OSCILLATORS Y. LE TRON - S. BARVET - J. OBREGON ABSTRACT The association of a Ga As Field Effect Transistors (FET) and a Single Crystal Ferrimagnetic Garnets (YIG) has brought about the realization of oscillators electronically tunable in very broad bands. This paper presents the theoretical conception and the first experimental results of two types of FET-YIG oscill

VERY HIGH-Q, TORS DIELECTRIC RESONATOR VOLTAGE-CONTRO,LLED OSCILLA S. Watanabe, N. Kusama and K. Sakamoto ABSTRACT A new technique for frequency modulation by a dielectric resonator microwave oscillator is described here. To modulate with a very high-Q dielectric resonator oscillator, a microwave ferrite is attached to the dielectric resonator. Results of experiments showed that this VCO

STABLE FET LOCAL OSCILLATOR CONTROL* Paul LESARTRE, AT 11 GHz WITH ELECTRONIC AMPLITUDE Rene DESSERT, John MAGARSHACK** ABSTRACT An 11 GHz FET oscillator with a stable Ba2Ti 02 resonator has been developed for the local oscillator of a satellite TV front-end. It has excellent frequency and amplitude stability, low noise and high efficiency. An original amplitude control provides the means for

A COAXIAL GaAs FET OSCILLATOR AND ITS STABILIZATION BY A TEMPERA TURE-COMPENSA TED MIC DISCRIMINATOR J. P. Cantle*, D. S. James* & P. Lawson ABSTRACT + This paper describes a low-Q GaAs FET oscillator design in coaxial form around a pill-packaged commercial device. Bias variation can provide tuning ranges of lGHz in Xand Ku-bands. At X-band 60mW is obtainable at almost 30% efficiency. Tem