CST – Computer Simulation Technology

A Compact Multi-Frequency, High Power Radiating System Combining Dual-Band, Electrically Small Magnetic EZ Antennas and Multi-Frequency Standing Wave Oscillator Sources

Title:
A Compact Multi-Frequency, High Power Radiating System Combining Dual-Band, Electrically Small Magnetic EZ Antennas and Multi-Frequency Standing Wave Oscillator Sources
Author(s):
Eric S. Ramon, J. Scott Tyo,Richard W. Ziolkowski, Michael C. Skipper, Michael D. Abdalla, Joshua M. Martin, Larry L. Altgilbers
Source:
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Vol./Issue/Date:
VOL. 62, NO. 6, JUNE 2014
Year:
2015
Page(s):
pp 3281 - 3289
Keywords:
Electrically small antennas, high power microwave generation, mesoband sources, multifrequency antennas
Abstract:
High power microwave (HPM) sources are typically bulky and massive in order to be able to radiate the extremely high source powers with a good impedance match and low losses. For this reason, it is sometimes difficult to incorporate an HPM antenna onto a desired platform when the available space is small. In previous work, we have adapted an electrically small EZ antenna to operate with a mesoband, quarter-wave oscillator source. The EZ antenna operates over a ground plane, but is conformal and low profile in that the electrical size is on the order of ?/12, making it attractive for applications where there is sufficient internal space to place a full source, but only limited space outside the platform for the radiating subsystem. Here we extend the capabilities of the oscillator/EZ antenna combination by introducing a dual band design for the antenna and altering the oscillator to produce multiple resonant frequencies. Designs are shown here that operate in the UHF (500-800 MHz) and L-band (1.5-1.8 GHz), but the operation frequencies are essentially arbitrary. This paper shows modeling results that predict high antenna efficiency with electrical sizes of at Ka <; f = 500 MHz.
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