In this article, A Sierpenski based octagonal carpet fractal antenna is introduced for quad‐band applications. The proposed antenna developed with FR‐4 substrate material with relative permittivity of 4.4, thickness chosen is 1.6 mm and co‐planar waveguide feed is used in this design. The antenna is designed, simulated with computer simulation technology studio suite, printed and tested. The measurement results of proposed antenna resonates at 2.4, 4.45, 9.1, 10.24, 12.46 GHz and are well suited for C‐band(2.4 GHz), L‐band (4.45 GHz), X‐band (9.1 GHz, 10.24 GHz), Ku‐band (12.46 GHz) applications. Good agreement between the results of simulation and measurement is observed with applications.
In this article, broadband substrate‐integrated waveguide (SIW) venus‐shaped slot antenna for V‐band applications was proposed. The size of the antenna is 13 × 9 × 0.381 mm and printed in a 5880 RT‐Duriod substrate with a dielectric constant of 2.2. The antenna is designed, simulated, tested, and validated in terms of reflection coefficient and voltage standing wave ratio. The impedance bandwidths of the simulated and measured results are 5.4 GHz (ranging from 57 GHz to 62.4 GHz) and 5.3 GHz (ranging from 57.15 GHz to 62.45 GHz) and also good bidirectional radiation patterns are obtained. Finally, the Resistor, Inductor, Capacitorleave (RLC) equivalent circuit model is introduced to match the reflection coefficient of an antenna, implemented with the help of MATLAB and validated.
The substrate‐integrated waveguide (SIW)‐based slot antenna is proposed for millimeter wave applications that is 60 GHz applications. The proposed design uses a microstrip feed for excitation, the crown‐shaped slot is used, and dimensions are 14 mm × 8.4 mm × 0.381 mm. The genaralized parameters of the antenna are reported, those are voltage standing wave ratio (VSWR), reflection coefficient, farfield patterns, efficiencies, and surface current. It has impedance bandwidth of 3.64 GHz by proper alignment of slot that is crown, and resonant frequency is 60 GHz and also included antenna prototype. The reflection coefficient, VSWR of measurement results are reported, and the percentage of impedance bandwidth of simulation and measurement results is 6.06% and 6.02%.
In this article, a compact SIW‐based H‐spaced head‐shaped slot antenna is proposed, and slot is etched into the top, proposed design printed by RT‐Duriod 5880 substrate (εr = 2.2), which is accountable for achieving millimeter‐wave wireless applications, small size, and broadband operation. The SIW‐based slot antenna with a compacted dimension of 14 × 8 × 0.381 mm3 is fabricated and tested. The testing results show that the design proposed, having occupied frequency range from 58.5 to 61.72 GHz, respectively, covers V‐band (millimeter wireless communications applications). The testing and simulation result bandwidth range of a proposed design is 4.22 and 4.19 GHz. It has fine radiation characteristics for both E‐field and H‐field in all the preferred operational bands and generates superior performances compared to the existing design antenna in the reviews.
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