Dual-Band Printed Inverted-F Antenna With a Nested Structure

Abstract

Abstract-A dual-band printed inverted-F antenna with a nested structure is proposed. In this antenna, matching can be controlled for both frequency bands by changing element lengths. The measured and calculated frequency characteristics of the antenna's reflection coefficient match very well, if the measurement cable connector is considered in the simulation. The measured −10 dB relative bandwidths of the reflection coefficient are 4.7% at 2.45 GHz (2.5 GHz to 2.62 GHz), and 9% at 5.5 GHz (5.28 GHz to 5.78 GHz). The calculated radiation efficiencies are 92% and 88%, at 2.45 GHz and 5.5 GHz, respectively, with calculated peak realized gains of 1.07 dBi and 3.36 dBi, respectively.

Related Reviews: Multiband Planar Inverted Antenna for Mobile Communication

“…A dual-band PIFA [10] shows the measured and validated reflection coefficient on HFSS is S11¡-10dB with a relative impedance bandwidth of 10 dB as measured by the reflection coefficient is 4.7% at 2.45 GHz (2.5 GHz to 2.62 GHz), and 9% at 5.5 GHz (5.28 GHz to 5.78 GHz). In addition, the calculated radiation efficiency is 92% and 88% at 2.45 GHz and 5.5 GHz, respectively, with calculated peak, and realized gains of 1.07 dBi and 3.36 dBi, respectively.…”

“…Some of the techniques used to design the planar inverted-L/inverted-F antenna reported so far include a quarter-circle sector with an inverted L-shaped monopole antenna for tri-band applications [6], Multiple bands are generated using a cactusshaped patch, consisting of inverted L-shaped slots and L-shaped branches [7], A miniaturized Rectangular Monopole Antenna (RMA) integrated with T-shaped stub, inverted long and short L-shaped stub resonators based on the application of Characteristic Mode theory (CM) were investigated for multiband operation [8], a compact Ultra-Wideband (UWB) antenna with an antenna structure, i.e. two open-ended inverted L-shaped slots carved into a square ground plane [9], then in [10], a proposed an inverted-F-printed dual-band antenna with a nested structure, and a dual-band capacitive paired planar inverted F antenna [11].…”

“…A dual-band PIFA antenna is proposed [10] to cover the frequency bands of 2.50-2.62 GHz and 5.28-5.78 GHz for WLAN applications, and the antenna is designed by selecting the parameters l1a,l1b,h1,l2a,l2b,h2 , and line width as shown in Figure 2(a). The antenna is designed on an FR-4 (Panasonic R-1705) substrate, and the antenna is fed through a 50 microstrip line with a signal line of 3 millimeters wide.…”

Investigation and Compatibility of a Low Profile Wideband Circular Ring Patch Antenna with Slotted Partial Ground Plane

“…There are several ways to feed microstrip patch antennas. The two types of these techniques are contacting and non-contacting [6]. In the contacting approach, a connecting component like a microstrip line is used to supply the direct RF power to the radiating patch.…”

Gain Enhancement and Miniaturization of Dual-Band Compact Patch Antenna

“…There have been numerous designs of multi-band PAs over the past decades, especially for wireless communications, 3.5 GHz WiMAX (3.3 -3.7) GHz, 5.5 GHz WLAN (5.150 -5.825) GHz and 10 GHz (8 -12) GHz radar applications. Some of those were planar multiple shaped strips with binomial curved conductor support [6], meander line and a patch in the form of a reverse toothbrush [7], miniaturization of a planar strip shaped monopole antenna for WLAN application [8], DGS with multi-strip monopole antenna [9], Inverted-F Antenna (IFA) structure [10], H-shaped antenna for GPS and Wi-Fi applications [11], microstrip antenna with improvement in performance using DGS [12], extended L-shaped multiband antenna for wireless applications [13]. Most of these designed antennas are physically large.…”