The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Properties of a novel broadband printed antenna element, printed counterpart of the conventional TV UHF panel antenna with very large bandwidth, has been studied. A design method and realization is presented in the paper. More than one octave measured bandwidth with VSWR less then 1.8 and directivity between 9.0 and 11.0 dBi has been achieved. Properties of the radiator as an array element have also...
The dual-polarized patch element is useful in indoor wireless networks for broad bandwidth and modest gains. The focus of this paper is placed on an inset matching network used with a patch element. The purpose of the design is to increase the bandwidth of a microstrip patch by using a thicker substrate with low dielectric constant. However, with such a combination, the input impedance of the antenna...
A new ring coupled triangular microstrip antenna has been investigated experimentally. The measured bandwidth of the proposed antenna is obtained 309 MHz (7.14% at fo = 4.33 GHz), which is 4 times the band width of the corresponding triangular patch antenna. The gain of the antenna is 3 dB and cross polar level is better than 12 dB within the impedance bandwidth of 7%.
A Broadband Microstrip U-slot antenna with improved impedance bandwidth has been presented. The measured impedance bandwidth of a reflection coefficient in −10dB ranges from 1.22 to 3.77 GHz and thus covers most of the commercial wireless communication systems, such as SDAR(2.32–2.35) GHz, WLAN(2.4–2.5) GHz, PCS(1.8–2.0) GHz. To achieve compact size the square patch is embedded with a U-slot, and...
In this paper, the design of circular microstrip patch antenna with sandwiching the substrates has been proposed for bandwidth enhancement. The proposed antenna is designed at 2.7GHz (S-band) using High Frequency Structural Simulator. The circular patch antenna is designed on two different substrates, FR4_epoxy and RT Duroid 5880™ and fabricated on the three layer FR4-epoxy substrate. The effect of...
The design of high antennas for wireless communication is very essential. The main drawback of the microstrip patch antenna is the low gain. The Metamaterial superstrate layer along with antenna structure improves the antenna performance parameters like gain and bandwidth. Due to Ultra refraction phenomenon, radiation is concentrated normal to the patch so that unwanted sidelobes can be avoided. This...
Modern communication devices supports higher bandwidth applications. So the antenna required for such applications should have wider bandwidth and should be smaller in size. Being easy to fabricate, low volume and inexpensive microstrip patch antenna is widely used for wireless communication applications. But disadvantages like low gain, narrow bandwidth, etc. limits the performance of microstrip...
In this paper a new antenna design using coplanar waveguide (CPW) suitable for Ultra Wide band (UWB) communication. It consists of two ground planes etched on the both side of the radiator. A ground plane having the slot structure. i.e. partial ground. By using a circle shaped radiator with rectangular cut provides much impedance bandwidth. This antenna has a better return loss less than -10 dB for...
This paper presents a U Shaped micro strip antennas with improved bandwidth operate at 3.8GHz. The proposed antenna will be in light weight, smart and compact unit compare with consists of metallic patch and ground between which is a dielectric medium called the substrate. The Proposed antenna also presents the detail steps of designing the U shaped micro strip antenna and the simulated result. U...
Bandwidth reconfigurable microstrip rectangular patch antenna with operating frequency (ƒc), 5.8 GHz has been presented in this paper. Network morphing method has been used to achieve reconfigurability. The bandwidth (BW) of the antenna varies from 107 MHz to 153 MHz i.e. a bandwidth variation of 46 MHz at almost constant frequency is observed. The VSWR achieved in this structure is 1.19. All this...
A microstrip patch antenna array with low-side lobe level, high gain and broadband is presented in this paper. A microstrip patch with one parasitical patch is proposed as a radiation element, and the antenna array is composed of 8×8 radiation elements. Then Chebyshev current distribution is used to design the feeding network on H-plane. The simulated results by CST Microwave Studio software indicate...
Gain characteristics improvement of a broadband circularly polarized patch antenna using artificial ground structure is studied. The antenna has a simulated S11 bandwidth of 48.6% and axial ratio bandwidth of less than 3dB of 21.2%. However, gain characteristics of boresight direction decreases in the frequency range of 5.5GHz. In this paper, by modifying shapes of the ground plane, we attempted to...
Low profile zeroth-order resonant antennas with monopole-like omnidirectional radiation in the horizontal direction with vertical polarization is proposed. It is composed of a rotationally symmetric mushroom structure including multiple metal patches and vias, a microstrip loop outside the patches, and a feed line connected to the outer loop. For comparison, conventional mushroom antennas with the...
Microstrip patch antennas are widely used in various wireless applications such as Wireless local area network (WLAN). WLAN is capable of providing maximum data transfer rate of 600 Mbps. The proposed antenna design has a slotted H-shaped patch and dumbbell (H) shaped Defected Ground Structure (DGS) on Flame Retardant-4 (FR-4) substrate with the microstrip feeding technique which radiates at 2.4GHz...
The modern wireless communication systems require large bandwidth, high gain and small size antenna's with the purpose of providing enhance the performance over a broad range of frequencies. Due to this requirement direct to design a Microstrip rectangular patch antenna. The proposed design of microstrip antenna is reported, which is increased the bandwidth of microstrip patch antenna by cutting part...
Improvement in gain as well as bandwidth of microstrip antenna using reactive impedance surface and Fabry Perot cavity resonator is proposed. Suspended microstrip antenna (MSA) is designed on reactive impedance surface (RIS) backed FR4 substrate. RIS improves bandwidth, gain and efficiency of antenna due to reduced coupling between MSA and ground plane. This MSA backed RIS is placed in a FPC resonator...
The microstrip antennas with symmetrical comb-shaped radiator are considered. The influence of depth of the cuts on main electrical characteristics of four- and eight-comb antennas is researched. The resonance frequency, the bandwidth and reflection coefficient are chosen as characteristics. The graphs of unknown dependencies are constructed for the two basic frequencies.
A simple design of single-feed polarization-reconfigurable microstrip antenna is presented in this paper. The antenna includes a circular radiating patch, a probe feed, and two parasitic pins. Through tuning the reactive loads between the parasitic pins and the ground plane, the antenna's polarization can be reconfigured among linear polarization, right hand circular polarization, and left hand circular...
A dual-band ultra-wide band (UWB) antenna forradar applications is presented in this paper operated at Ku bandand K band frequencies. The proposed antenna is performedwith Rogers RT5880 dielectric substrate material with thicknessof 1.2mm and designed different rectangular slots. It is fed bycoaxial feeding techniques to achieve the wider characteristics. The most of element area the current is distributed...
A slotted fan shaped microstrip patch antenna with three operating frequencies for radar application is presented. The design model is made to resonate at three frequencies in X-band. The X-band frequency range falls between 8 to 12 Gigahertz and are extensively used in radar applications. The dielectric substrate material used by the antenna is of low cost FR4 (Flame Retardant — Grade 4) Epoxy. To...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.