Abstract
In wireless communication system, one of the unique challenges is the requirement for smaller and cheaper antenna design that becomes an important aspect in the deployment of wireless enabled products. To meet this challenge, we developed a simple, small, compact, low cost, and practical antenna targeted for 2.4 GHz (ISM Band) application. A detailed investigation on miniaturized microstrip planar new antenna design using a combination of proposed shorted patch and meandering method are presented. All design and simulations were done using Agilent’s Advanced Design System (ADS) Momentum. To ensure the precision, verification has been done, designs were fabricated, and measurements on return loss and impedance bandwidth were performed by using FieldFox RF Analyzer. In realizing the design, a study on the surface current is conducted by simulation in order to maintain the target resonance frequency, 2.45 GHz. The designs have resulted in 86.5% and 95.5% size reduction, in comparison with a conventional rectangular patch antenna which is used as benchmark in this work. The performance of the proposed antenna is proven to be better than other existing miniaturization techniques such as the meandered line antenna (MLA) at the same size. Further improvement on radiation characteristic is also achieved by implementing Suspended Plate Antenna (SPA) approach. From the significant size reduction obtained, the concept used in this work would be suitable for cost centric products requiring small sized wireless module.
Highlights
Wireless feature implementations have rapidly evolved over the past decades
A few miniaturized antenna designs were attempted in this work to observe the working principle of proposed shorted patch and meandering
The first design is based on shorting wall concept where a series of vias are added in the middle of the patch where current is set maximum and voltage is zero
Summary
Wireless feature implementations have rapidly evolved over the past decades. Driven by this rapid progress, requirement for smaller and cheaper antenna design becomes an integral factor in the deployment of wireless enabled products. It is well known that the microstrip antennas have been widely used in the past decade for wireless enabled devices This is mainly due to its attractive characteristics such as small size, low profile, low cost and good repeatability, among others. In ensuring this work is relevant to a practical implementation of a wireless module commonly used in the industry, a few limitations are set. The following describes these limitations and its reasoning:. The antenna design and analysis in this work utilizes Agilent’s Advanced Design System (ADS) Momentum simulator (Hansen, R., 2005), and the results were verified with actual fabricated antenna
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