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A modified square patch antenna, for WiFi applications, operating at 5.5 GHz, is proposed in this article. A complementary square open loop resonator, having the resonance frequency at the upper 3 dB frequency of the patch resonance, is introduced on the patch to enhance the bandwidth more than twice that of the conventional square patch antenna operating at the same frequency. The concept of introducing...
In circularly polarized radiation, the rotational orientations of the transmitter and the receiver antennas are unimportant in relation to the received signal strength. In this paper, a center square slot cut elliptical patch microstrip antenna to realize a tunable circular polarization in 1000 MHz frequency band is proposed. It yields axial ratio bandwidth of nearly 1.2% over tunable range. A rectangular...
In this paper, a novel wide band stacked segment microstrip patch antenna (MPA) with two layered RT/Duroid is proposed. Multi-layered stacked patches are designed with rectangular dimensions, and square slots are entrenched with first patch to excite them. A parametric study of dielectric thickness and stacked center is carried out to enhance the impedance bandwidth of the proposed antenna. The antenna...
A compact, tuning-fork, microstrip-fed monopole antenna and a classical triangular patch antenna operating at 5.5 GHz for WiMAX and 5.2/5.8 GHz for WLAN and ISM are presented. The antenna fork features an arm with a slit, which improves the gain by 12% compared with fork antenna without slit. The antenna offers 1 GHz, 2:1 VSWR bandwidth. The proposed antenna has a compact size of 21 mm × 13 mm, resulting...
This work investigates microstrip patch antennas on composite printed circuit boards in terms of their radiating performance, manufacturing techniques and tolerances, structural and thermal properties. The objective is to validate that the designs are capable of offering stable performance, whilst providing high structural strength with significantly low mass. The results are compared with the ones...
Planar antenna array on a Femtosat is used to establish inter-satellite communication link using V-band with very high bandwidth. In this paper, the results are presented for a compact metamaterial inspired coaxial fed microstrip antenna which is designed to work at 60GHz with an impedance bandwidth of 6.5GHz. Beam steering for 7×1 array is also presented. A 7×7 planar array of the same is designed...
Microstrip patch antenna has extensive applications in areas requiring light weight and low profile antenna sub system. Differential Evolution (DE) algorithm and Cuckoo Search (CS) algorithm are modern optimization algorithms used here for determining the design parameters of microstrip antenna. In literature, there does not exist any direct relation between the bandwidth of a microstrip patch antenna...
In this paper a microstrip patch antenna of size 35 × 55 × 1.6 mm3 is proposed for INSAT and military requirements. The suggested antenna has a bandwidth of 2.31 GHz from 6.66 GHz to 8.97 GHz (27.5%). The antenna is designed and simulated using HFSS (High Frequency Structure Simulator).
This paper focuses on the bandwidth enhancement of a traditional circular patch antenna by introducing a diamond-shaped slot surrounded by a diamond-shaped ring in the center of the patch with a defected ground technique. The enhanced bandwidth of 506 MHz ranging from 9.872 GHz to 10.378 GHz is achieved with the proposed design method. Unlike other methods of bandwidth enhancement of a circular patch...
This paper presents a high gain wearable metamaterial antenna for biomedical applications. The wide band antenna is designed such that it mimics the electrical properties of the human skin. The proposed antenna operating in the X-band (8–12 GHz) allows sensing of varying differences in dielectric properties among skin tissues over a wide band of frequency and thus, can be used for skin cancer detection...
This paper proposes a three stage optimized design of microstrip swastik patch antenna for wireless communications. A FR4 epoxy substrate of dielectric permittivity 4.4 and loss tangent .0002 is used. The design uses coaxial feeding technique. The simulation software used is HFSS. Each of the design is analyzed and then compared at its best resonant frequencies in terms of return loss, bandwidth,...
A Microstrip Patch antenna for radar application is presented. There is a variety of shapes available for Microstrip patch antenna. In this paper, conventional shapes like Rectangular, Triangular and Circular Microstrip patch antenna are designed and analyzed. The antenna is designed to resonate at X-band frequency. The X-band frequency range lies between 8 to 12 Gigahertz and are widely used in radar...
This paper demonstrates the design and performance analysis of the star shaped microstrip patch antenna. The proposed antenna design employs substrate of FR4 material having thickness and dielectric constant of 1.6 mm and 4.4 respectively. The proposed antenna design consists of a FR4 substrate, star shaped radiating copper patch and slotted ground forming star shaped microstrip patch antenna configuration...
This paper is aimed to present a very small sized patch antenna for UWB applications. The antenna used microstrip feed-line. This antenna is very small in dimension. The total size of the antenna is 20×18mm2. Triangular slots in the partial ground plane, are used to get a better bandwidth. The antenna has VSWR<2 over the bandwidth. The whole designing and simulation process of the antenna is done...
A new kind of water patch antenna for omnidirectional radiation pattern is proposed and designed. Different from the previous water patch antenna model, this kind of water patch antenna is completely made of distilled water except for the feeding probe. Results show that an impedance bandwidth of 40.5% for SWR < 2, a gain up to 4.8 dBi at maximum radiation direction and omnidirectional conical...
The wide beam radiated in the broadside direction from a patch antenna is transformed into a narrow tilted beam using three loop-based plates. The loops are made of strip conductors and have the same outer circumference and different strip widths. A tilted beam of approximately 60 degrees from the broadside direction is realized. A VSWR bandwidth of 8% is obtained.
For CNSS applications, this letter presents a square patch antenna loaded with a pair of wrench-shaped tuning rings on the diagonal position. The loaded tuning ring, which can apparently enhance the bandwidth and gain of the proposed antenna by adjusting orthogonal radiation arrays, consists of a triangle corner cut, a rectangular arm slot and a C-shaped groove. The simulation of the designed antenna...
This paper presents a design of Y-shaped patch microstrip antenna, which has been achieved by inserting Y-shaped strip in circular hole in square patch microstrip antenna and it has been excited by using microstrip line feed technique. Y-shaped microstrip patch antenna is designed on a FR4 substrate of thickness 1.524mm with relative permittivity of 4.4 and mounted above the ground plane. The measured...
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...
In this paper microstrip antenna with different defected ground structures are compared on the basis of their bandwidth, gain and radiation properties. It is observed that these antennas can operate in ultra wide band frequency range with different notches. Comparison of these antenna structures reveals that these antennas show multiple band operation with different number of pass bands and bandwidths...
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