Upper Wlan Band Notched Uwb Monopole Antenna Using Compact Two via Slot Electromagnetic Band Gap Structure

Abstract

Electromagnetic Band Gap (EBG) structures can be employed near the feed line of a UWB monopole antenna, to reject the already existing narrowband radio signals operating within the spectrum of an Ultra Wide Band (UWB) antenna. Multiple EBG structures are required to reject multiple interfering bands. However, since the ground plane of a monopole antenna is limited, there is a need for compact EBG structures. This paper presents the application of a Two Via Slot (TVS) EBG to reject the interfering upper Wireless Local Area (WLAN) band (5.725 GHz-5.825 GHz) from the spectrum of a fork-shaped UWB monopole antenna. The simulated results demonstrate that the TVS EBG gives better performance in terms of higher and sharper Voltage Standing Wave Ratio (VSWR) value at the rejection band while occupying least ground plane area than Conventional Mushroom Type (CMT) EBG, Edge Located Via (ELV) EBG, slotted-patch ELV EBG, and semi-circular EBG. The proposed design is fabricated and measured. The measurement results prove that the antenna successfully achieves wide impedance bandwidth from 3 GHz to 12 GHz while rejecting the frequencies from 5.4 GHz to 5.9 GHz.

High Gain Array Antenna Using Electromagnetic Band Gap Structures for 5g Applications

“…In recent years, there has been considerable interest in high-impedance surfaces for enhancement of antennas [17][18][19][20]. HIS structures are periodic and widely used, especially for antenna applications [21][22][23], and they may be realized by etching or drilling on the metal or dielectric substrates to improve the performance of antennas, especially the gain/radiation patterns by putting an end to the problems created by surface waves [11,[24][25][26].…”

Design of Triple Band-Notched Uwb Mimo/Diversity Antenna Using Triple Bandgap Ebg Structure

“…Another technique that has been recently used by the authors to obtain band rejection is placing Electromagnetic Band Gap (EBG) structures close to the microstrip feedline of the monopole antenna [18][19][20][21][22][23][24][25][26]. EBG structures perform band-notch in the UWB spectrum at their bandgap resonant frequency [18].…”

“…For a compact UWB antenna, the ground plane area is further reduced. It would be very difficult to accommodate in the limited ground plane area, the unit cells of three/four different sized EBG structures to design triple/quad band-notched UWB antenna [22]. Hence recently many authors have proposed UWB antennas integrated with dual/triple bandgap EBG structures [23][24][25][26][27][28] so that a single cell of EBG structure may suffice the requirement.…”

Eight-shaped polarization-dependent electromagnetic bandgap structure and its application as polarization reflector

“…This arrangement holds distinctive properties, such as prohibiting the propagation of surface waves (surface wave bandgap) and reflecting incident waves with zero degree reflection phase for a particular band of frequencies (reflection phase bandgap) [2]. For these distinctive properties, EBG structures have been exploited by microwave and antenna engineers for variety of applications [3][4][5][6][7][8]. An EBG structure with asymmetric/anisotropic unit cell behaves as a polarization-dependent EBG (PDEBG) structure.…”