Patch size reduction of rectangular microstrip antennas by means of a cuboid ridge

Abstract

An effective approach to reduce the patch size in rectangular patch microstrip antennas is presented. The proposed approach is based on inductively loading the patch using a cuboid ridge. A theoretical background of the approach using the transmission line model has been provided. A prototype of the proposed antenna is fabricated and measured. The results, advantages and limitations of the proposed approach are presented and discussed.

Miniaturization of a Circular Patch Microstrip Antenna Using an Arc Projection

“…It is also observed that the arc projection is more effective in reducing the resonant frequency for the thinner substrates. In other words, similar to the phenomenon that occurs for the cuboid ridge in a rectangular patch microstrip antenna [11], it is the ratio of the projection height to the substrate thickness (h r /h) that determines how effective the projection is.…”

“…As mentioned in Section I, the idea of arc projection inspired from the impressive effect of a cuboid ridge on the miniaturization of the rectangular patch antenna with its theoretical explanation has been explained in [11] in detail. The role of cuboid ridge is basically like a short stub in transmission line model of the antenna that loads the antenna inductively and reduces the resonance frequency.…”

“…2. The flange on the partial element reduces the length of the each partial element based on the theory explained in [11], and this leads to a reduction of radius in the resulting circular structure.…”

“…Recently, an effective method for the miniaturization of the rectangular patch antenna has been reported in [11] that is based on inductively loading the patch using a cuboid ridge. In this letter, the idea of using nonuniform patches has been utilized to miniaturize circular patch antennas.…”

Miniaturized Rectangular Slotted Nameplate Antenna Design for Satellite and Radio Determination Applications

“…8 and 9, the simulated directivity [13] values include 0.38 dB at 6.07 GHz, 0.91 dB at 9.25 GHz, 2.9 dB at 15.79 GHz, and 3.72 dB at 23.41 GHz. 8 and 9, the simulated directivity [13] values include 0.38 dB at 6.07 GHz, 0.91 dB at 9.25 GHz, 2.9 dB at 15.79 GHz, and 3.72 dB at 23.41 GHz.…”