Design of Rectangular Microstrip Patch Antenna Incorporated with Innovative Metamaterial Structure for Dual band operation and Amelioration in Patch Antenna Parameters with Negative � and ?

Abstract

In this work a dual band rectangular microstrip patch antenna along with the innovative metamaterial structure is proposed at a height of 3.2mm from the ground plane, which consists of a rectangular geometry incorporated with c shaped structure. This work is mainly focused on increasing the potential parameters of microstrip patch antennas and analyzing the dual band operation of proposed antenna. The proposed antenna is designed to resonate at 2.478GHz and 2.919GHz frequency. The impedance bandwidth of the patch antenna along with the proposed metamaterial structure at 2.478GHz is improved by 20.4MHz and return loss is reduced by 20.128dB. At 2.919GHz the impedance bandwidth is improved by 25.4MHz and return loss is reduced by 19.564dB. For verifying that the proposed metamaterial structure possesses Negative values of Permeability and Permittivity within the operating frequency ranges, Nicolson-RossWeir method (NRW) has been employed. For simulation purpose CST-MWS Software has been used.

A Stretchable Radio-Frequency Strain Sensor Using Screen Printing Technology

“…Its dielectric constant ( ε r ) and loss tangent were determined using a T-resonator method [19,20]. The resonant frequency of the rectangular patch can be calculated as follows [21,22]: $f_0=\frac{c}{2\sqrt{{\epsilon }_{\mathrm{eff}}}\left\{L_p+0.824H_s\left[\frac{\left({\epsilon }_{\mathrm{eff}}+0.3\right)\left(\frac{W_p}{H_s}+0.264\right)}{\left({\epsilon }_{\mathrm{eff}}-0.258\right)\left(\frac{W_p}{H_s}+0.8\right)}\right]\right\}}$ ${\epsilon }_{\mathrm{eff}}=\frac{{\epsilon }_r+1}{2}+\frac{{\epsilon }_r-1}{2}\left[\frac{1}{\sqrt{1+12\left(\frac{h_s}{W_p}\right)}}\right]$ where ε eff is the effective dielectric constant resulting from the fringe fields and H s is the thickness of the substrate. The values of ε r and loss tangent of the PDMS were determined to be 3 and 0.02, respectively.…”

A Stretchable Electromagnetic Absorber Fabricated Using Screen Printing Technology

“…The bottom of the absorber was designed to have the same width and length as the PDMS substrate, as shown in Figure 1b. The resonant frequency ( f 0 ) of the unit cell is given by the following equation [31]: $f_0=\frac{c}{2\sqrt{{\epsilon }_{eff}}\left\{L_p+0.824H_s\left[\frac{\left({\epsilon }_{eff}+0.3\right)\left(\frac{W_p}{H_s}+0.264\right)}{\left({\epsilon }_{eff}-0.258\right)\left(\frac{W_p}{H_s}+0.8\right)}\right]\right\}}$ ${\epsilon }_{eff}=\frac{{\epsilon }_r+1}{2}+\frac{{\epsilon }_r-1}{2}\left[\frac{1}{\sqrt{1+12\left(\frac{H_s}{W_p}\right)}}\right]$ where f 0 and ε eff are the resonant frequency and dielectric constant, respectively.…”

Silicon CPW Fed Slotted Antenna for Realization of Integrated Sar System Front-End

“…W and L are calculated based on standard equation for rectangular antenna and CPW properties as in [21,22] at centre frequency, f c (6.1 GHz), where L = λ/2 and W = λ/3. The antenna also consists of a rectangular slot and a combination of a triangular and trapezoidal patch shape with CPW feed.…”