A compact miniature fractal planar antenna for RFID readers

Abstract

<p>This article presents a new miniature microstrip antenna in the ISM "Industrial Scientific and Medical" band, at 2.45 GHz. This microstrip antenna is designed for RFID reader system, by exploiting the fractal technique and the CPW fed; this antenna is printed on FR4 substrate with dielectric constant of 4.4. The validated antenna has a good matching input impedance range from 2.27 GHz to 2.68 GHz with a stable radiation pattern, a gain of 2.2 dBi, and a directivity of 1.91 dB. The total area of the final circuit is 21.22 x 32.05 mm2. A prototype of the proposed antenna has been fabricated and measured.</p>

Development of Laboratory Equipment Inventory System Using Radio Frequency and Internet of Things

“…In this system, we use RFID. Generally, RFID consists of a reader and a tag or more [20]. An RFID reader is used to authorizing access to the use of the tool cupboard.…”

Design of a miniaturized wideband disc monopole antenna used in RFID systems

“…In [30] an antenna operated at 2.45 GHz with the overall size of (35 26 1.67) produced gain of 2.5 dB at 2.415 GHz was presented. In [31] a new miniature microstrip antenna with size of (21.22 32.05) mm 2 and directivity of 1.91 dB. The bandwidth is equal to 327 MHz.…”

A new design of 5G multilayers planar antenna with the enhancement of bandwidth and gain

“…The fundamental drawback of microstrip patch antennas is their limited bandwidth characteristics. This disadvantage can be mitigated by employing several approaches such as etching slots on the radiating patch or a defected ground structure on the ground plane (DGS), the partial ground plane technique [2], [3], and the feeding technique of the coplanar waveguide line (CPW) [4], [5]. Li et al [6], the loaded slots in the ground plane have produced multiple resonant frequencies, and the return loss characteristics were enhanced by using a partial ground plane, generating a frequency band of 12, 4 GHz.…”