Frequency-Reconfigurable Bow-Tie Antenna for Bluetooth, WiMAX, and WLAN Applications

Abstract

A frequency-reconfigurable bow-tie antenna for Bluetooth, WiMAX, and WLAN applications is proposed. The bow-tie radiator is printed on two sides of the substrate and is fed by a microstripline continued by a pair of parallel strips. By embedding p-i-n diodes over the bow-tie arms, the effective electrical length of the antenna can be changed, leading to an electrically tunable operating band. The simple biasing circuit used in this design eliminates the need for extra bias lines, and thus avoids distortion of the radiation patterns. Measured results are in good agreement with simulations, which shows that the proposed antenna can be tuned to operate in either 2.2-2.53, 2.97-3.71, or 4.51-6 GHz band with similar radiation patterns.Index Terms-Bow-tie antenna, frequency-reconfigurable, p-i-n diode.

A Compact Flexible and Frequency Reconfigurable Antenna for Quintuple Applications

“…The gain is computed at discrete frequencies that are of particular interest. The gain requirement is fulfilled in our proposed antenna as compared to [2], [19]. In [2], pin diode diminishes the gain and efficiency of the bow-tie antenna because of insertion loss introduced by the resistance diodes.…”

“…Reconfiguration can be achieved by deploying switches within the radiating element of the antenna [1]. A reconfigurable antenna reduces interference from adjacent unused bands and minimizes the filter requirements of the front end circuits, thus making the design compact [2]. Frequency reconfigurable antenna with wide bandwidth is generally chosen because of its miniaturization, cost effectiveness and better tuning ability between different frequency bands without affecting the gain and stability of radiation pattern.…”

Dual Band Metamaterial Antenna For LTE/Bluetooth/WiMAX System

“…A circularly polarised square slot (CPSS) antenna array composed of 2 × 2 CPSS for operating over the frequency band from 1 to 4.34 GHz (L- and S-band) 4 . A reconfigurable antenna for Bluetooth, WiMAX, and WLAN operations was presented, where the operating bands (2.2 to 2.53, 2.97 to 3.71, or 4.51 to 6.0 GHz) could be tuned by embedding pin diode on the antenna arm 5 . A metamaterial loaded rectangle monopole antenna (size of 45 × 40 mm 2 ) showed resonance approximately, at 5.20 GHz for WLAN application and when an inverted-L slot was etched in antenna then the antenna produced a second resonance at around 4.10 GHz for WiMAX applications 6 .…”

Design and Development of Ferrofluid Based Reconfigurable Antenna

“…RF-MEMS, PIN diodes, Varactors etc. [4][5][6], optically controlled switches [7]and mechanically tuned structures [8]. However, these methods possess some disadvantages like non-linearity of the switching elements, high biasing voltages and interference due to the biasing lines, complicated activation mechanism and bulk design [3].…”