Investigation on wideband eshaped microstrip patch antenna with. In this paper we are going to enhance gain and bandwidth of microstrip patch antenna. Abstractwe present microstrip patch antenna loaded with multiple split ring resonator substrate and superstrate. Proper design of the superstrate layer and the correct orientation of its polarization layer enable broader bandwidth capabilities for a given antenna. Srr superstrate for gain and bandwidth enhancement of microstrip patch antenna array chirag arora1, shyam s. The gain of the antenna for the single element is found to be above 6. The directivity of a patch can be estimated quite easily. Pdf this article presents a microstrip fed patch antenna array, loaded with metamaterial superstrate. Rectangular patch antennas are notoriously narrowband. The microstrip antenna is meandered at the edges to increase the bandwidth of simple patch antenna.
Pdf effect of dielectric constant on the design of. Investigations on wideband uslot microstrip patch antenna. The substrate between patch and ground plane plays important role in design it decides the bandwidth as well as size of the microstrip antenna. To give some concrete examples of bandwidth, here is a table of the bandwidths for common antenna types. This aperturecoupled antenna is fed by a conventional power divider. Broadband compact microstrip patch antenna design loaded. An air cavity has been embedded in the quartz glass stack to improve antenna bandwidth and radiation efficiency. The proposed metasurface superstrate loaded antenna shows inphase reflection of the incident. Microstrip antenna, artificial and patch antenna researchgate, the.
The goal is to understand the radiation mechanism, polarization, patterns, impedance and bandwidth. Apr 01, 2017 the substrate between patch and ground plane plays important role in design it decides the bandwidth as well as size of the microstrip antenna. The effect of changing substrate material and thickness on. A new metasurface superstrate structure mssloaded dual band microstrip linefed small patch antenna is presented in this paper. Jun 03, 2015 the effect of changing substrate material and thickness on the performance of inset feed microstrip patch antenna. Broadband compact microstrip patch antenna design 5 c s. The antenna with mss loading has substantially enhanced bandwidth and gain at the lower and upper bands, respectively, with a minimal increase in the overall size. The proposed antenna was designed on a ceramicfilled bioplastic sandwich substrate with a high dielectric constant. Pdf a superstrate patch antenna for 60ghz applications. What is the effect of a substrate in a microstrip antenna. The patch antenna without superstrate has a bandwidth of 0. The impedance bandwidths of a single patch with and without a superstrate for vswr superstrate produces a 350% increase in 3db ar bandwidth and a 7db increase in the broadside gain relative to the conventional cp patch antenna.
Broadband compact microstrip patch antenna design loaded by. Metamaterial superstrate for performance enhancement of. Us6946995b2 microstrip patch antenna and array antenna. The proposed antenna is modeled using ansys high frequency structure simulator using fdtd method. If the antenna had a 100% radiation efficiency, all directivity would be converted to gain.
The basics of patch antennas, updated orban microwave. The above equation says that the microstrip antenna should have a length equal to one half of a wavelength within the dielectric substrate medium. Broadband compact microstrip patch antenna design loaded by multiple split ring resonator superstrate and substrate. The microstrip patch antenna using a dielectric superstrate for having high gain and wide bandwidth, includes. As shown in figure 2, the patch antenna consists of one ring slot at the center and smooth bevel and bevel at the edge of the patch antenna to enhance the. Gain enhancement of patch antenna integrated with metamaterial. Lenghtheffective wavelength2under root of relative permitivity of substrate. The combined metasurface and the prsbased patch antenna is designed on a lowcost substrate fr4. Study of the dielectric superstrate thickness effects on microstrip.
When microstrip antennas are covered with protective dielectric superstrate, the antenna resonant frequency, bandwidth, gain and other parameters are altered. This will answer such questions as what is the bandwidth of a dipole antenna. It consists of a lower patch with an optimised dimension of 1. Pdf performance enhancement of array antennas using. This paper experimentally investigates the effect of a superstrate layer for high gain on microstrip patch antennas.
Physically connected stacked patch antenna design with 100%. A superstrate patch antenna for 60ghz applications ieee xplore. A dielectric superstrate layer above a microstrip patch antenna has remarkable effects on its gain and resonant characteristics. The proposed patch antenna is printed on a of fr4 substrate with thickness of 1. Superstrate antennas for wide bandwidth and high efficiency. So to improve the performance, there was a need to modify the design and optimize patch antenna for high value of gain and bandwidth with. The paper investigates single band planar resonant antenna inspired by phi shaped slotted metamaterial superstrate and a square patch antenna is used as a. Srr superstrate for gain and bandwidth enhancement of microstrip.
Abstractthis article presents a microstrip fed patch antenna array, loaded with metamaterial superstrate. This aperture coupled antenna is fed by a conventional power divider. Improving bandwidth rectangular patch antenna using different. Typical half wave patches have efficiencies well above 90%. A metamaterial superstrate loaded microstrip patch antenna array has been proposed in this paper.
Srr superstrate for gain and bandwidth enhancement of. Sarwar hosain 2, sohag sarker 2, makhluk hossain prio 3, monir morshed 4, ajay krishno sarkar 3. However, microstrip patch antennas have some shortcomings compared to non planar antennas, such as their narrow bandwidth, low gain and. Under unloaded conditions, the conventional patch antenna array resonates at ieee 802. We analyze how the loading of split ring resonator superstrate and substrate can improve the bandwidth compared to the simple microstrip patch antenna and microstrip patch antenna loaded with split ring resonator superstrate. The realised 3 db axial ratio bandwidth arbw of the antenna is 1. Microstrip patch antenna design the design of simple microstrip patch antenna and its results is presented in this section. A superstrate patch antenna for 60ghz applications.
High gain superstrate loaded membrane antenna based on. Paper open access related content silicone rubber superstrate. Kumarswamy published on 20928 download full article with reference data and citations. This paper presents design and simulation of a rectangular micro strip patch array antenna at 2. Pier c online effects of superstrate layer on the resonant. The presence of superstrate produces a 350% increase in 3db ar bandwidth and a 7db increase in the broadside gain relative to the conventional cp patch antenna. A superstrate patch antenna for 60ghz applications ieee. When a microstrip antenna is covered with a superstrate dielectric layer, its properties like resonance frequency, gain and bandwidth are changed which. A superstrate patch antenna for 60ghz applications duixian liu, johannes akkermans and brian floyd t. The resonant characteristics of superconducting rectangular microstrip patch antenna with a superstrate layer are investigated using a fullwave spectral analysis in conjunction with the complex resistive boundary condition. The antenna q also relates to bandwidth higher q is lower bandwidth, and vice versa. When microstrip antenna covered with a dielectric superstrate radome its properties like resonance frequency, gain, bandwidth and beam width are changed.
Study of the dielectric superstrate thickness effects on. Radiation pattern simulation and measurements are carried out at the center. The performance parameters of the patch antenna with superstrate material are degraded slightly i. The percentage bandwidth of the rectangular patch microstrip antenna in terms of patch dimensions and substrates parameters is given as follows. Baral3 abstractthis article presents a microstrip fed patch antenna array, loaded with metamaterial superstrate.
Pdf axialratio bandwidth and gain enhancements of patch. Watson research center, ibm, yorktown heights, ny 10598, usa email protected email protected abstract this paper presents a balancedfed aperturecoupled patch antenna suitable for broadband millimeterwave communications. The proposed metasurface superstrateloaded antenna shows inphase reflection of the incident. Design of high gain, wideband microstrip resonant cavity. A patch antenna radiates power in certain directions and we say that the antenna has directivity usually expressed in dbi. A dielectric superstrate layer is utilized to enhance the antenna gain. The frequency of operation of the patch antenna of figure 1 is determined by the length l. Dielectric superstrate thickness variationon the characteristics of circular patch antenna written by v. Ar bandwidth and gain enhancements of patch antenna using. A novel fss superstrate has been presented in which improves the gain of proposed antenna about 6. Gain enhancement of microstrip patch antenna using dielectric. A new metasurface superstrate structure for antenna. We measured the gain of antennas with and without a superstrate and found that the gain of a.
The effect of changing substrate material and thickness on the performance of inset feed microstrip patch antenna. The antenna is realized in a lowcost pcb technology and can. But this antenna when compared with other antennas has some drawbacks like narrow bandwidth, low efficiency and low gain. Design of multidielectric layer microstrip antenna and superstrate effects the multilayer microstrip antenna structure involves addition of a superstrate layer over the substrate. The photonic crystal is used as a superstrate which has a thickness of 1. The impedance bandwidths of a single patch with and without a superstrate for vswr superstrate layer that can be placed over an existing patch antenna as a retrofit or incorporated into new systems. The center frequency will be approximately given by. Another wideband fss constructed from two metal surfaces separated by a substrate has been developed in 29 providing 5. Here is the link page to the various patch antenna and microstrip antenna topics. In order to use this dng slab as a superstrate, the rectangular microstrip patch antenna has been designed to resonate at 31. Superstrate antennas for wide bandwidth and high efficiency for 60 ghz indoor communications 95 of the microstrip fed stacked patch antenna with superstrate. Gain enhancement of the patch antenna using tsrr nri superstrate.
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