Reconfigurable Notch Band Monopole Slot Antenna for WLAN/IEEE-802.11n Applications

Abstract

This article presents a compact dual band antenna for WLAN/IEEE-802.11n applications with frequency reconfigurability nature. The resonant modes are achieved through slots incorporated in the radiating structure and tunability in the band is achieved by PIN diodes switching. The proposed monopole slot antenna with dimensions of 55 X 52 X 1.6 mm placed on Rogers RT-duroid substrate of permittivity 2.2 and loss tangent 0.0009. The changes in first and second resonant frequencies are attained with switching of diodes connected between slot gaps. The switching properties of the diodes are utilized in optimum way to notch certain frequencies and to choose operation frequencies. Low cross polarization with stable radiation pattern and average gain of 2.8 dB are the key elements for this novel antenna. The designed antenna is showing good impedance bandwidth of 68% and peak realized gain of 4.86 dB at 5.6 GHz WLAN band. A good matching between measured results and simulation studies are obtained from the current antenna design.

Analysis of Conformal Triple Notch Antenna for C, X and Ku Band Communication

“…Attaining notch bands for blocking unnecessary bands and making them adoptable to communication applications with conformability needs novel structures [10][11][12][13][14]. People designed notch band antennas, conformal antennas and compact antennas for various applications [15][16][17][18][19][20][21][22][23][24][25][26]. This article is the combination of all these attributes for attaining best possible solution to modern communication systems.…”

A frequency reconfigurable antenna with Bluetooth, Wi-Fi and WLAN notch band characteristics

“…To miniaturize and achieve reconfigurability, PIN/varactor diodes are introduced in the design. Further, by adding PIN diodes strategically placed on the CPW loaded with SSRRs, the band stop behavior of the overall structure can be reconfigured to a bandpass behavior [17][18]. Another way to introduce the reconfigurable technique to design a continuously tunable dual notched-band UWB antenna is by cutting two u-shaped slots in the radiation patch to generate dual band-notched characteristics at the central frequency at 3GHz and 5GHz, respectively and two varactor diodes are placed in the middle of the u-shaped slots which control the notched-band frequency [19][20].…”

Design and analysis of stepped reconfigurable rectangular patch antenna for LTE, vehicular and ultra wideband applications

“…In [4] compact Dual band antenna for GSM 1800/1900/UMTS/LTE/UWB is designed for ultra-wide band applications with the frequency band of 3.1 GHz to 10.6 GHz. Reconfigurable antennas are designed in [5][6][7][8][9][10][11][12][13][14]. Reconfigurable antenna changes the characteristics of the original antenna through mechanical, electrical or other means.…”