Band notched UWB circular monopole antenna with inductance enhanced modified mushroom EBG structures

Self Cite

Abstract-A MIMO/Diversity antenna with triple notch characteristics is proposed in this article. The proposed antenna has triple notches in the WiMAX band (3.3-3.6 GHz), WLAN band (5-6 GHz), and X-band satellite communication (7.2-8.4 GHz) band. Defected Ground Compact Electromagnetic Band Gap (DG-CEBG) is a design used to accomplish band notches. Defected ground planes are utilised so as to achieve compactness in conventional EBG structures. The proposed WiMAX band, WLAN band, and X-band satellite communication band DG-CEBG structures show a compactness of around 46%, 50%, and 48%, respectively, over a conventional EBG structure. In these structures, decoupling strips and a slotted ground plane are used to enhance the isolation between two closely spaced UWB monopoles. The individual monopoles are 90 • angularly separated with a stepped structure which helps to reduce mutual coupling and also contributes towards impedance matching by increasing the current path length. |S 21 | or mutual coupling is found to be less than 15 dB over the whole UWB frequency range. The Envelope Correlation Coefficient (≤ 0.5) is within the acceptable limits over the whole UWB frequency range. Notched frequency depends on the parameters of DG-CEBG structures; when there is a change in these parameters notch frequency is also changed. A low cost FR-4 substrate with thickness (h) = 1.6 mm, permittivity (ε) = 4.4 and loss tangent (δ) = 0.02 is used for the proposed antenna, and it has a compact size of 58 × 45 × 1.6 mm 3 .

Section: Selective Band Gap Creation By Means Of Ebg Structures For Cmentioning

confidence: 99%

Triple Band Notched Dg-Cebg Structure Based Uwb Mimo/Diversity Antenna

Jaglan¹,

Gupta²,

Kanaujia³

et al. 2018

Self Cite

“…Various techniques have been employed to realise UWB antennas with band-notch characteristics [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Slots of different shapes, such as U shape slot, U shape slot with parasitic strip, three C shape slot, and inverted U slots, have been introduced in the radiating patch and ground plane in [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, EBG structures have been used in various antenna designs since they reduce surface waves, spurious response and improve the antenna efficiency [11]. EBG structures are used to design a compact UWB antenna with band notches in [12][13][14][15][16][17]. In [12], a single band notch circular shape UWB antenna is designed using four centre located via (CLV) EBG structures on a 39 × 35 mm 2 substrate.…”

Section: Introductionmentioning

confidence: 99%

Compact Ultra-Wideband Antenna With Triple Band Notch Characteristics Using Ebg Structures

Trimukhe¹,

Hogade²

2019

A compact ultra-wideband (UWB) antenna with triple band-notch characteristics is proposed. The proposed antenna employs fractal and two via edge located (TVEL) electromagnetic band gap (EBG) structures near the feed line to cause triple frequency band notch characteristics over WiMAX (3.3 to 4.0 GHz), WLAN (5.1 to 5.8 GHz), and satellite downlink communication (7.2 to 7.8 GHz) frequency bands. The proposed antenna is designed and fabricated on a 24×24×1.6 mm 3 FR4 substrate. It offers impedance bandwidth (VSWR < 2) from 2.9 to 11.2 GHz except over the notched bands. The antenna has nearly omnidirectional radiation patterns and steady gain over the desired UWB. The measured results agree with the simulated ones.

“…To avoid such potential interferences from these unwanted narrowband signals, band rejection features are required. In recent years, various design methods of UWB antenna with band-notch characteristic have been investigated [8][9][10][11][12][13][14][15][16][17]. Some conventional approaches carve differently shaped slots on radiating patches and adding stubs [8,9], insertion of resonator structures such as split ring resonator (SRR), CSRR, and electric ring resonator (ERR) [10][11][12], using parasitic strips [13] and Electromagnetic Band Gap Structures (EBG) [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…However, UWB antenna's band-notched frequency [8][9][10][11][12][13][14][15][16][17] needs to be controlled and should be tunable to avoid fabrication errors and to meet the real-time reconfigurability. Thus, the reconfigurable technique has received considerable attention in wireless communications field.…”

Section: Introductionmentioning

confidence: 99%

Compact Uwb Antenna With Tunable Band-Notch Characteristics Using Varactor Diode

Trimukhe¹,

Hogade²

2019

A compact ultra-wideband (UWB) antenna with tunable band notched characteristics is proposed. Varactor loaded, two via edge located (TVEL) and fractal electromagnetic band gap (EBG) structures are designed for tunable band-notched characteristics. The varactor diode near the TVEL EBG tunes the band-notch frequency for WiMAX (2.8-4.0 GHz) band, while another varactor near fractal EBG structure tunes band-notch frequency for WLAN (4.7-6.2 GHz) band. The varactors are independently controlled to achieve WiMAX and WLAN notched band. Notch frequencies can be continuously tuned by varying the bias voltage across the varactors. The proposed antenna of 24 × 24 mm 2 dimensions is fabricated on an FR4 substrate. A good agreement between simulation and measurement results is obtained. A continuous band notch tuning from 2.8-4.0 GHz and 4.7-6.2 GHz is obtained using varactor diodes having capacitance in a range of 0.497-2.35 pF.