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E-shaped microstrip patch antenna is proposed here with two additional rectangular slots. The effects two additional rectangular slots at different locations are presented and analyzed the variation of parameters i.e. return loss, impedance bandwidth and gain. The size of E-shaped patch antenna is reduced up to 8%. This E-shaped patch antenna gives enhanced impedance bandwidth up to 27% and gains...
A band notch applications based coplanar waveguide (CPW)-fed printed monopole UWB antenna is proposed. The CPW fed antenna has band notched attribute for UWB antenna. The proposed band notch UWB antenna consists of stepped like feed line, ground plane and rectangular patch, U-slot and C-slot to magnify the bandwidth of an UWB antenna. By removing C shaped slot and a U shaped slot from stepped rectangular...
This paper presents a broadband, dual-polarized substrate integrated waveguide cavity-backed slot antenna. In this design, high-order cavity resonances are used to generate arbitrary levels of inclined linear polarization. The antenna can provide an adjustable inclined linearly polarized with an aspect ratio of Ex/Ey ranging from 0.11 to 0.69. The proposed antenna provides fractional impedance bandwidth...
In this paper, Coaxial feed dual band circular Microstrip patch antenna (CMPA) for ISM (2.4–2.5GHz) and WLAN (5.150–5.350GHz) application is proposed. Dual frequency bands are obtained by inserting a circular slot in the circular radiator as well as bandwidth enhancement is obtained by modifying the ground plane. FR-4 substrate having dielectric constant of 4.4 and thickness of 1.6 mm is used to simulate...
In this paper, a very small broadband circularly polarized planar antenna fed by coplanar waveguide is designed and fabricated. The antenna is composed of a beveled rectangular radiator patch, a square patch, two inverted L-shaped grounded strip lines, and two semicircles etched on ground. Additionally, to realize the circular polarization a new structure including two semicircles etched on ground...
In this paper, a kind of Ka-band Planar broadband slot-coupled antenna is introduced. In order to broaden the bandwidth, use E-shaped patch on the basis of the copper axial feed antenna. These two parallel slots is equivalent to two LC resonant circuits which has coupling effects. Meanwhile, slot on the ground. Through the simulation, the center frequency of the antenna is 29 GHZ and its relative...
The microstrip wideband antenna has attracted much attention due to the applications of multiple wireless communication systems, such as the global positing system (GPS at 1.575 GHz), the digital communication system (DCS at 1.8 GHz), the international mobile telecommunications-2000 (IMT-2000 at 2.1 GHz), the wireless local area network (WLAN at 2.45 GHz), the long term evolution-2600 (LTE2600 at...
In this paper, a compact multiple-input-multiple-output (MIMO) antenna is proposed for Ultra-wideband (UWB) applications. The proposed MIMO antenna is comprised by two symmetrically placed half slot antenna elements which one side of the slot is open to the air. Two antenna elements share the same ground plane, and each opening of the half slot gapes to the opposite directions. For covering the entire...
The advantages of broad band and high efficiency make CBSA (cavity-backed slot antenna) a potential alternative for modern SAR (Synthetic Aperture Radar) systems. Therefore, a broadband CBSA is proposed for dual-polarization SAR system. By adopting double-layer wide slots and strip-lines feed, dual-polarization is achieved while still maintaining broad bandwidth. To enhance the antenna integration,...
This paper presents planar modified circular slot antenna with asymmetric Y-shaped feeding technique. The CPW asymmetric Y-shaped feeding structure is electromagnetically coupled to the modified circular shaped radiating patch. The proposed antenna is made circularly polarized by innovative Y-shaped asymmetric arm feeding structure. The antenna covers the impedance bandwidth of 2.04GHz–4.38GHz with...
In this paper, we present an offset microstrip-fed ultrawideband antenna with band notched characteristics. The antenna structure consists of rectangular radiating patch and ground plane with rectangular shaped slot, which increases impedance bandwidth upto 123.52%(2.6–11GHz). A new modified U slot is etched in the radiating patch to create band-notched properties in the WiMAX (3.3–3.7GHz) and C-band...
In this paper, a single-feed arrow-shaped circularly polarized (CP) antenna is presented for GNSS application. Two orthogonally placed dipoles connected by phase delay lines are printed on both sides of a substrate to realize circular polarization. Further, an unbalanced slotted artificial magnetic conductor (AMC) is proposed to reduce profile of the antenna, enhance impedance bandwidth and CP bandwidth...
A simple E-shaped patch array antenna with low profile and high gain is proposed for the millimeter-wave wireless communication system. The proposed antenna can achieve the impedance bandwidth from 56.6 GHz to 64.5 GHz, which covers the unlicensed frequency of 60 GHz (57–64 GHz). The peak gain of the proposed array antenna is 17.92 dBi. The results show that the proposed antenna has great potential...
Planar antenna with U-shaped Slot on Radiating Patch and Conductor-Backed Plane for UWB Applications is presented in this paper. The basic planar antenna is modifying by cutting a U-shaped slot on the radiating patch. A U-shaped conductor-backed plane is add on the ground plane and acts as parasite resonator. By inserting an optimized triangular slits and multi-slotted ground plane, the antenna produced...
Multiple Input Multiple Output (2x2MIMO) patch antenna for multiband applications has been proposed in this paper. The proposed design has reduced the mutual coupling and enhance the bandwidth and efficiency. The proposed 2x2 MIMO patch antenna is simulated using Computer Simulation Technology (CST). The isolation, bandwidth and efficiency are enhanced by using groups of rings around the stepped cut...
We present a millimeter wave slot coupled Vivaldi antenna (SCVA) for the 5th generation wireless communication systems. The performance of proposed SCVA is studied with contoured platted via holes introduced along the radiating tapered slots. The designed SCVA is compact with a size of 19.3×73.45 mm2. The simulation results show that the reflection coefficient (S11) is less than −10 dB from 24 GHz-40...
In this paper, a simple wideband electromagnetic bandgap (EBG) resonator antenna (ERA) with an all-dielectric superstructure is presented to operate at 60 GHz. The antenna superstructure consists of two circular dielectric slabs with different relative permittivity values. A waveguide-fed slot antenna is used to excite the antenna's cavity and is placed about half a wavelength from the superstructure...
In the present paper, a novel coplanar wiveguide (CPW)-fed printed fractal-shaped slot antenna for bandwidth enhancement is presented. The proposed antenna is composed of a wide fractal-shaped slot and an hexagonal parasitic patch fed by a CPW Feed. The combination of the fractal concept and CPW-fed technique allows to improve the characteristics of the proposed antenna significantly. The simulation...
In this paper, a novel configuration of longitudinally slotted waveguide antenna array, which has a single waveguide cavity, is presented. To broaden the bandwidth of the array, a novel feeding structure is introduced. A 16-elements uniform linear array at X-band was designed. The simulated bandwidth of S11 ≤ −10dB is 10.5%, and the antenna has good radiation pattern in the bandwidth. The design considerations...
With the development of high-speed integrated circuit, the Ultra Wideband (UWB) communication system has been developed toward the direction of miniaturization, integration, which will necessarily promote UWB antenna also be developed toward the direction of miniaturization, integration, etc. This paper proposes an improved structure of Vivaldi antenna, which loads resistance at the bottom of exponential...
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