Title :
Analysis and design of active antenna arrays
Author :
Liu, K. ; El-Ghazaly, S.M. ; Nair, V. ; Deshpande, M. ; El-Zein, N. ; Goronkin, H.
Author_Institution :
Telecommun. Res. Center, Arizona State Univ., Tempe, AZ, USA
Abstract :
In this paper, the FDTD method is extended successfully to analyze active antennas using Z-transform method for small signal model and by a stable scheme for large signal model. The two approaches are validated by comparison with analytical impedance expression in frequency domain. Through these approaches, we analyze active antennas and antenna arrays containing tunnel diodes. Effects of various device parameters are investigated in order to find desired oscillations. Single and array active antennas are designed and tested. Experimental and simulated results are given and compared.
Keywords :
Z transforms; active antenna arrays; antenna theory; finite difference time-domain analysis; frequency-domain analysis; microwave antenna arrays; FDTD method; Z-transform method; active antenna arrays; analytical impedance expression; device parameters; frequency domain; large signal model; small signal model; tunnel diodes; Antenna arrays; Circuit simulation; Diodes; Electromagnetic scattering; Equations; Finite difference methods; Impedance; Resistors; Time domain analysis; Voltage;
Conference_Titel :
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6538-0
DOI :
10.1109/MWSYM.2001.967154
