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.
In this paper, the bandwidth enlargement method of the conventional λ/4 monopole antenna on finite ground plane is investigated for utilization in IFF (Identification friend or foe) of the secondary radar the operating frequency 1.03–1.09 GHz. For the initial study, we have proposed the structure of the resonant holes on the surface of a sector of metallic cylinders covering such the monopole that...
This paper presents the application of metamaterial structure for improving the gain of antenna to extend the reading distance of UHF RFID reader without any modifying of the original reader. The proposed structure of metamaterial is designed on the theory of Spilt Ring Resonator (SRR), which located in front of such the RFID reader, while the back side of reader is blocked with a metallic sheet as...
This paper presents the performance improvement of rectangular waveguide to coaxial adapter of horn antenna for radar system at L-band frequency by using metamaterial structure based on a wire medium. The main point is to utilize a split ring resonator (SRR) as bandpass filter and the wire medium metamaterial placed on the waveguide's aperture for gain increment. This idea has been insisted by CST...
This paper proposes the gain enhancement of base station antenna for mobile phone by using the metamaterial structure associated with conventional slot array antenna. The new technique of cavity of curved-woodpile metamaterial on Electromagnetic Band Gap (EBG) structure has been utilized to improve the gain instead of increasing the number of slots on such an array. The proposed technique has the...
This paper proposes the new technique of the metamaterial on the structure of the curved-woodpile Electromagnetic Band Gap (EBG) for gain improvement of a conventional rectangular horn antenna without its construction enlargement. The curved-woodpile EBG, which is the 3D volumetric structure, has been utilized to enhance the gain instead by transferring the electromagnetic fields from aperture of...
This paper proposed a design of the wire medium structure for the conical horn antenna at the 10 GHz for radar applications. The main idea of this research is to the suitable wire medium structure and distance between apertures to such structure for gain improvement. We found that this proposed antenna with the wire medium structure provided the higher gain (20.9 dB) when compared to the gain of conventional...
This paper proposed the technique for reducing the dimension of conventional conical-horn antenna for C-band frequency (∼5 GHz) by using metamaterial technique on the structure of mushroom-like electromagnetic band gap (EBG). The main idea of this research is the modified EBG structure for improve conical horn antenna, which is gouged in shape of square-ring slots on the outer surface of ground plane...
The new technique of the Electromagnetic Band Gap (EBG) for gain enhancement of a conventional circular horn antenna without its construction enlargement is presented. The gain enhancement synthesis method for woodpile EBG, which is the 3D volumetric structures, that has to transfer the electromagnetic fields from aperture of a circular horn antenna through woodpile EBG is presented by using the quadratic...
The conventional rectangular horns have been used for microwave antennas a long time. Its gain can be increased by enlarging the construction of horn to flare exponentially. This paper presents the new technique for improving its gain for conventional horn without construction enlargement. The quadratic-shaped of woodpile Electromagnetic Band Gap (EBG) and the mushroom-like EBG have been utilized...
This paper presents the study of the new exciting method for improving gain of the conventional conical horn at C-band frequency by using mushroom-like Electromagnetic Band Gap (EBG). The important technique of this paper is to use the basic mushroom-like Electromagnetic Band Gap (EBG) on circular plate and connected to waveguide/coaxial adapter. From the study, we found that such technique can provide...
This paper presents the design and experiment of band-notched printed dipole antenna with the mushroom-like electromagnetic band gap (EBG) reflector plane operating at the frequency bandwidth for digital television (DTV) signal reception, 470∓862 MHz. The proposed antenna consists of a band-notched printed dipole antenna that can provide the wider bandwidth and the EBG reflector that can suppress...
This paper proposes an omnidirectional high-gain slot array antenna for mobile phone base station. The advantages of this proposed antenna are low profile, light weight, and easy fabrication and installation. Moreover, it provides not only the moderately high gain but also the omnidirectional pattern, which more appropriate for mobile phone base station. The half-power beamwidths in E-plane is around...
This paper presents the study of new technique for exciting the 4×4 rectangular microstrip patches antenna (MSA) array by using a single patch, which is surrounded with metallic plate. The objective of this research is to explore the new technique for exciting any microstrip array instead of the conventional phasing line that have energy loss and narrow bandwidth occurred inside it. From many literatures,...
Gain improvement of a sector antenna of base station for mobile phone using microstrip antenna (MSA) array with curved woodpile Electromagnetic Band Gap (EBG) is presented. The advantages of this proposed antenna are easy fabrication and installation, high gain, and light weight. Moreover, it provides a fan-shaped radiation pattern and wider in the horizontal direction, which appropriate for mobile...
This paper presents the optimum shape of a curved strip dipole antenna for maximum directive gain, which is used for excitation source of the circularly polarized resonator antenna. The proposed antenna consists of three main components, a curved strip dipole, conductor plane, and electromagnetic band gap (EBG). A curved strip dipole is constructed of a metallic sheet and bended to be a half of annular...
This paper presents the design and experiment of wideband using band-notched printed dipole antenna operates covering frequency band for digital television (DTV) signal reception in the 470–862 MHz. Besides this proposed antenna is required to be compact, light-weight, and easy to fabricate. The antenna is of rectangular shape of width (W) 35 mm and length (L) 223 mm, and comprises two asymmetric...
This paper presents the design and experimental of dual wideband coplanar waveguide (CPW)-fed using stub split-ring rectangular slot antenna operates in WLAN applications. This antenna is designed for dual frequency used in WLAN system coverage IEEE 802.11b/g (2.4–2.4835 GHz) and IEEE 802.11a (5.15–5.35 GHz). The results of the return loss (S11), gain and radiation pattern of the proposed antenna...
This paper presents a quadratic-shaped reflector antenna by using backscattering technique useful for point-to- multipoint communications to achieve efficient coverage of service areas on the earth for low-earth orbit satellite or inside very large hall for WLAN access point. Physical optics (PO) is used to analyze the radiation pattern of proposed reflector antenna and verified with experimental...
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.