Title :
Hybrid analysis/design method for active integrated antennas
Author :
Erturk, V.B. ; Rojas, R.G. ; Roblin, R.
Author_Institution :
ElectroSci Lab., Ohio State Univ., Columbus, OH, USA
fDate :
4/1/1999 12:00:00 AM
Abstract :
The paper presents a new hybrid analysis/design scheme where electromagnetic full wave and nonlinear circuit solvers are used in conjunction with an improved Kurokawa (1969) analysis. The full wave solver is the finite-difference time-domain (FDTD) method and is used to extract the scattering parameters (S-parameters) of all passive components and to predict the radiation patterns. The extracted S-parameters are then used in a CAD nonlinear circuit solver to characterise the device line and find an operation point. Note that the effects of the higher order harmonics on the operation point of this active antenna are taken into account by means of the harmonic balance algorithm. To validate the proposed method, an oscillator-type active antenna working at 2.019 GHz is fabricated and tested. It is shown that the calculated and measured results, such as operation frequency and radiation patterns, agree very well
Keywords :
S-parameters; UHF antennas; UHF oscillators; active antennas; antenna radiation patterns; antenna testing; circuit CAD; electrical engineering computing; finite difference time-domain analysis; harmonic analysis; nonlinear network synthesis; 2.019 GHz; CAD nonlinear circuit solver; FDTD method; S-parameters; UHF; active integrated antennas; electromagnetic full wave; finite-difference time-domain; harmonic balance algorithm; higher order harmonics; hybrid analysis/design method; improved Kurokawa analysis; measured results; operation frequency; operation point; oscillator-type active antenna; passive components; radiation patterns; scattering parameters;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:19990208
