ARMSAAssociation of Regional Magistrates of South Africa
ARMSAAnnular Ring Microstrip Antenna
Copyright 1988-2018, All rights reserved.
References in periodicals archive ?
In this paper, we propose a new configuration of an ARMSA fed by a 90[degrees] branch-line hybrid coupler.
The configuration of the ARMSA fed by a 90[degrees] branch-line hybrid with the parasitic element is illustrated in Figure 1.
As we all know, when ARMSA operates at T[M.sub.11] mode, it is difficult to achieve good impedance matching because of the very large input-impedance.
Some literatures had reported the uses for the inner space of the ARMSA. In [5] the meandered impedance transformer lines are a good choice to adopt, but the impedance bandwidth of which is too narrow.
As we all know, the impedance of the ARMSA with T[M.sub.11] mode is large, and the ratio of a to b affects the impedance obviously.
So from Figure 3 and Figure 4 we can conclude that the ARMSA presents a feature of double resonant modes.
According to the design procedure for the stacked ARMSA, the required side length of the ground plane and the thickness of substrate are also considered.
The Confederation of Independent Trade Unions in Bulgaria (CITUB) has claimed that the armsA plant VMZ Sopot is being pushed towards bankruptcy aimed at change of ownership.