Abstract
Characteristic Mode Analysis of Circular Microstrip Patch Antenna and Its Application to Pattern Diversity Design
Highlights
Microstrip patch antennas (MPAs) are popular in various wireless applications due to the merits of low profile, low cost, and planar structure [1]
To the best of the authors’ knowledge, the effect of shorting pins on circular patch model has not been analyzed with theory of characteristic modes (TCMs)
During the measurement, when one port is connected with the VNA, the other port is terminated with 50Ω load
Summary
Microstrip patch antennas (MPAs) are popular in various wireless applications due to the merits of low profile, low cost, and planar structure [1]. It is easy to excite the TM modes of MPA to produce broadside or conical (or omnidirectional) radiation patterns. The TM10 mode of rectangular patch and the TM01 mode of circular patch are often used to generate broadside and conical radiation patterns [2]-[3]. The electric field in the cavity is perpendicular with the cavity This method provides a simple way to observe the mode behavior of MPA, but has difficulty in analyzing shorting pins, because the number of shorting pins in practical model is discrete. To the best of the authors’ knowledge, the effect of shorting pins on circular patch model has not been analyzed with TCM. Multiple eigenmodes of circular patch are used to design wideband highly-isolated pattern diversity antenna.
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