Corner Reflector Antenna Research Articles

High-gain H-plane SIW horn antenna loaded with dielectric slab for ku band low RCS applications

This article presents the design, simulation and experimental measurements of an H-Plane substrate-integrated waveguide (SIW) Horn Antenna Loaded with FR-4 Slab for Low RCS (radar cross section) applications like defence sector at Ku band (12-16 GHz). The design facilitates high gain and good impedance bandwidth (IBW). Also, the proposed structure has simple feed, planar structure with low-cost FR-4 substrate as dielectric material and decomposed into two parts. The former part of the antenna is the feeding part, which consists of two metallic plates filled with air substrate and a 90-degree corner reflector designed by shortening the metallic plates. The later part of the antenna is loaded with the FR-4 substrate that enhance the peak gain of the structure significantly. A simple coaxial probe is employed for the excitation of the corner reflector antenna. After the design is conferred by simulations, the same is fabricated and the performance measured experimentally. The experimental results are in close agreement with the simulated results. The design has yielded a 10 dB bandwidth of 30% (11.6–16 GHz), and a stable endfire radiation pattern over the entire bandwidth with a peak gain of 18.5 dBi at 14 GHz. Also, the design has F/B ratio > 20 dB over entire 10 dB bandwidth. Moreover, the antenna produced low RCS < 20 dB(m2) from −30° to +180° of elevation angle. Therefore antenna can’t easily detected from the radar system and suitable for defence applications.

Amplification of High Quality of Signal Strength Using Corner Reflector Antenna for Satellite Communications

The strengths of the corner reflector antenna (CRA) which spans space's dynamic pseudo-random phase wave-front, which can be used in frequency modulation of the echo, replacing doppler's typical style. Radiometric assumes that Imaging discoveries can change lives a kind of special geosynchronous in geostationary orbit for the extremely low SNR in this geometry, just have a very low signal to noise ratio (SNR) posit the use of such a matched filter to strengthen the SNR and enable the existence of good specificity. In this paper, the signal is amplified to send a high-quality signal to the transmitter for satellite communication using a corner reflector antenna. Apart from other antennas, the corner reflector antenna plays an important role in increasing the signal strength in satellite communication. Using this corner reflector antenna the system will be good and fast so that the transmitter or the receiver can transmit or receive the signal very fast. While transmitting the signal the noise or interference in the system can be eliminated for that reason the corner reflector antenna is used. The corner reflector antenna can reduce the system noise or interference so that the system will be in proper condition to transmit or receive the signal.

A New Corner-Reflector Antenna With Tunable Gain Based on Active Frequency Selective Surfaces

A new corner-reflector antenna with a tunable gain based on active frequency selective surfaces (AFSSs) is presented. The proposed design comprises a dipole antenna as a source of the electromagnetic (EM) waves, and three reconfigurable AFSS layers of different size arranged at the same side of the dipole. Each screen consists of two AFSS panels that connected in series and rotated towards the feed to form a V-shaped corner reflector. These AFSS layers are mainly used to control the transmission/ reflection characteristics of the proposed antenna. By applying different combinations for ON/OFF states of diodes, the proposed antenna can adjust its gain value. The antenna performance in terms of reflection coefficient, radiation pattern in the H-plane and gain is analyzed at 5.8 GHz. To validate the concept of the proposed antenna, the prototype of the proposed antenna is fabricated and measured. The measured results show a good agreement with the simulated ones.

Frequency-dependent radiation properties of negative permittivity metamaterial reflector antenna

This paper reports a novel type of microwave reflector antenna that uses the frequency-dependent properties of an epsilon negative (ENG) metamaterial medium. The frequency-dependent characteristics of this artificial plasma medium is analyzed using the dispersive auxiliary differential equation finite difference time domain (ADE-FDTD) method by employing a Gaussian pulse and the results are verified experimentally using an artificial plasma medium fabricated by an array of thin conducting wires. The radiation pattern of plain and corner plasma reflector antennas modeled using Drude equations are obtained and are compared with a plasma reflector and conventional metallic reflector antennas. The results obtained for the plasma reflector antenna is experimentally verified using a 90° corner reflector antenna fabricated using wire medium. This new class of plasma antennas show marked variations in radiation pattern for frequencies above and below plasma frequency, which may find potential use in various frequency selective applications.

ФОРМИРОВАНИЕ ВОЛНЫ С КРУГОВОЙ ПОЛЯРИЗАЦИЕЙ НАКЛОННЫМ ИМПЕДАНСНЫМ ВИБРАТОРОМ, РАСПОЛОЖЕННЫМ НАД ПРЯМОУГОЛЬНЫМ ЭКРАНОМ

PACS number: 07.57.-c Purpose: The conditions for formation of a wave with circular polarization and extremely achievable field density amplitude in the set directions of the main observation planes in the far zone, radiated by the oblique impedance wire dipole located over the rectangular perfectly conducting screen are determined. Design/methodology/approach: To solve the 3-D vector problem of diffraction of a field of arbitrarily oriented impedance thin wire dipole on the perfectly conducting rectangular screen the uniform geometric theory diffraction method is applied, and the asymptotic expressions for an electric current of the horizontal impedance wire dipole with electrical length 0.4 ≤ 2 l /λ ≤ 0.6 are used. Findings: The dipole’s slope angles at which the wave with equal amplitudes of orthogonal components of the electric field vector is radiated, and also the corresponding to them ellipticity coefficients and normalized squared absolute values of the electric field vector as functions of the observation angles and the distance between dipole and screen are calculated accounting for the diffraction effects on screen edges. Conclusions: The technique is developed for determination of an impedance wire dipole slope angle with account for the diffraction effects on screen edges at which the circularly polarized wave is radiated. It is shown that by the choice of an appropriate slope angle and distance of the resonant impedance wire dipole from the screen, the circularly polarized radiation with extremely achievable intensity in the given direction in one of the main observation planes can be realized. Key words: rectangular screen, surface impedance, resonant wire dipole, wave, circular polarization, ellipticity coefficient, field amplitude Manuscript submitted 31.03.2016 Radio phys. radio astron. 2016, 21(3): 216-230 REFERENCES 1. WOODWARD, O. W., 1957. A Circularly Polarized Corner Reflector Antenna. IRE Trans. Antennas Propag. vol. 5, is. 1, pp. 290–297. DOI: https://doi.org/10.1109/TAP.1957.1144512 2. NG, T. S. and LEE, K. F., 1982. Theory of Corner Reflector Antenna with Tilted Dipole. IEE Proc. vol. 129. is. 1, pp. 11–17. DOI: https://doi.org/10.1049/ip-h-1.1982.0003 3. Eliseeva, N. P., 2001. Optimizing the Directivity Factor of a Finite Corner Antenna with a Circularly PolarizedRadiation Field. J. Commun. Technol. Electron. vol. 46, no. 8, pp. 891–900. 4. GOROBETS, N. N. and YELISEYEVA, N. P., 2008. Synthesis of a Circular Polarized Field Radiated by an Electric Dipole Located over a Rectangular Screen. J. Commun.Technol. Electron. vol. 53, no. 1, pp. 26–33. DOI: https://doi.org/10.1134/S1064226908010038 5. PIMENOV, YU. V. and KHOD'KOV, D. A., 1990. Radiation of elementary electric vibrator placed above planescreen. Radiotekhnika. no. 11, pp. 60–63 (in Russian). 6. PIMENOV, YU. V. and KHOD'KOV, D. A., 1991. Radiation of elementary electrical vibrator placed parallel to plane rectangular screen. Radiotekhnika. no. 7, pp. 61–63 (in Russian). 7. TSAI, L. L., WILSON, O. R., HARRISON, M. G. and WRIGHT, E. H., 1972. A Comparison of Geometrical Theory of Diffraction and Integral Equation for Analysis of Reflector Antennas. IEEE Trans. Antennas Propag. vol. 20, no. 6, pp. 705–712. DOI: https://doi.org/10.1109/TAP.1972.1140326 8. IVANCHENKO, I. V., KOROLEV, A. M., PAZYNIN, V. L., POPENKO, N. A. and KHRUSLOV, M. M., 2006. The Features of Radiation Pattern Formation of the Monopole Antenna with Finite Screens. Telecommunications and Radio Engineering. vol. 65, is. 20, pp. 1859–1869. DOI: https://doi.org/10.1615/TelecomRadEng.v65.i20.30 9. GOROBETS, N. N., YELISEYEVA, N. P. and ANTONENKO, YE. A., 2012. Optimization of Radiation Characteristics of Wire-Screened Antennas. Telecommunications and Radio Engineering. vol. 71, is. 1, pp. 59–69. DOI: https://doi.org/10.1615/TelecomRadEng.v71.i1.60 10. Yeliseyeva, N. P. and Gorobets, N. N., 2009. Diffraction of radiation of the wire antenna on the rectangular and corner screen. Kharkiv: V. N. Karazin Kharkiv National University Publ. (in Russian). 11. Nesterenko, M. V., 2010. Analytical methods in the theory of thin impedance vibrators. Prog. Electromagn. Res. B. vol. 21, pp. 299–328. 12. NESTERENKO, M. V., KATRICH, V. A., PENKIN, Y. M., DAKHOV, V. M. and BERDNIK, S. L., 2011. Thin Impedance Vibrators. Theory and Applications. New York: Springer Science+Business Media Publ. DOI: https://doi.org/10.1007/978-1-4419-7850-9_1 13. YELISEYEVA, N. P., BERDNIK, S. L., KATRICH, V. A. and NESTERENKO, M. V., 2015. Electrodynamic characteristics of horizontal impedance vibrator located over a finite-dimensional perfectly conducting screen. Prog. Electromagn. Res. B. vol. 63. pp. 275–288. DOI: https://doi.org/10.2528/PIERB15043003 14. YELISEYEVA, N. P., BERDNIK, S. L., KATRICH, V. A. and NESTERENKO, M. V., 2016. Directional and polarization radiation characteristics of a horizontal impedance vibrator located above a rectangular screen. J. Commun. Technol. Electron. vol. 61, no. 2. pp. 99–111. DOI: https://doi.org/10.1134/S1064226908010038

A Compact Dual-Band Pattern Diversity Antenna by Dual-Band Reconfigurable Frequency-Selective Reflectors With a Minimum Number of Switches

A novel compact dual-band pattern diversity antenna is proposed. Dual-band reconfigurable frequency-selective reflectors are designed and applied to form a right-angle corner reflector antenna with reconfigurable patterns. With only one switch, the reconfigurable frequency-selective reflector can be controlled to be transmissive or reflective to vertically polarized waves at 2.45 and 5.25 GHz. By changing the combinations of the switch states, multiple patterns can be obtained. A dual-band feeding antenna designed via using the coupling effects is made to achieve well-matching conditions in all circumstances corresponding to various switch states at both frequencies. The measured results show good agreement with the calculated ones and demonstrate good pattern diversity virtues.

Performance and Radiation Patterns of a Reconfigurable Plasma Corner-Reflector Antenna

A novel reconfigurable plasma corner reflector antenna is proposed to better collimate the energy in forward direction operating at 2.4 GHz. Implementation of a low-cost plasma element permits beam shape to be changed electrically. The maximum measured gains are 5.7, 10.8, and 10.5 dBi for the omnidirectional, single-, and double-beam shapes, respectively.

A Novel Approach to Non-invasive way of Treating Skin Cancer using Dipole Fed Corner Reflector Antenna with Sub Nano Second Electric Pulse

A Novel Approach to Non-invasive way of Treating Skin Cancer using Dipole Fed Corner Reflector Antenna with Sub Nano Second Electric Pulse

A Corner Reflector Antenna on Slot Antenna Driven for 2.45GHz Wireless LAN Systems

We present new design the construction of a corner reflector antenna on slot antenna driven to be used on wireless LAN systems. The gain of antenna system is more than 13dB with narrow beam width and the radiation patterns can be broadcasting long distant. The VSWR in results are absolutely for antenna system radiation pattern from single slot antenna at 2.4GHz.

Dielectric EBG Corner Reflector Antenna

In this paper, we present a novel dielectric EBG corner reflector antenna. The reflector is realized using dielectric rods arranged in a square lattice. The influence of reflector width, length and source distance from the corner apex is investigated using a simple two-dimensional antenna model; results are then used to design a threedimensional antenna. A prototype was build and tested, showing a good agreement between simulations and measurements results: 40% impedance bandwidth is achieved as well as stable radiation patterns with a maximum gain of 13.5 dBi and a front-to-back-ratio greater than 20 dB.

A Novel Pattern Diversity Reflector Antenna Using Reconfigurable Frequency Selective Reflectors

A radiation pattern diversity reflector antenna is investigated. Novel switchable frequency selective reflectors are designed and developed to construct a square corner reflector antenna. By controlling a switching device on the frequency selective reflector, one can make it opaque or transparent to a vertically polarized incident wave. This antenna is fed by a monopole. By configuring the switch states of the frequency selective reflectors, various beam shapes can be formed and steered. Measured results of the antenna show good agreement with the calculated ones.

A novel corner reflector antenna

AbstractA new type of corner reflector (CR) antenna with a rectangular dielectric feed is presented. The radiation characteristics of the wideband CR were studied and compared with a standard corner reflector antenna. It is observed that this novel CR antenna has a wide bandwidth and better performance. © 2001 John Wiley &amp; Sons, Inc. Microwave Opt Technol Lett 30: 403–404, 2001.

A new corner reflector antenna with periodic strip subreflectors

This paper presents the design of a new type of corner reflector (CR) antenna and the experimental investigation of its radiation characteristics. The design involves the addition of planar parallel periodic strips to the two sides of a CR antenna. The position, angular orientation, and number of strips have a notable effect on the H-plane radiation characteristics of the antenna. Certain configurations of the new antenna are capable of producing very sharp axial beams with gain on the order of 5 dB over the square corner reflector antenna. A configuration that can provide symmetric twin beams with enhanced gain and reduced half-power beam width (HPBW) is also presented. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 20: 326–328, 1999.

Design and analysis of small multisector antenna for wireless LANs based on monopole Yagi‐Uda elements

This paper proposes a new small multisector antenna called MS-MPYA (multisector monopole Yagi-Uda array) for wireless LANs. MS-MPYA consists of a multisector monopole Yagi-Uda array on a circular finite ground plane. The horizontal radiation pattern of the MS-MPYA is largely determined by the multisector array setting effect. A numerical analysis shows that setting metallic fins between arrays is effective in eliminating the strong reflection that would otherwise cause pattern instability; when the metallic fins are set, the beamwidth is reduced in the horizontal plane due to mutual sector interaction. The MS-MPYA design method considers the variables of array length, ground plane length, reflector height, and fin length. We clarify that the MS-MPYA offers a much lower profile than corner reflector or horn antennas. © 1998 Scripta Technica, Electron Comm Jpn Pt 1, 81(12): 80–90, 1998

Variable beamwidth corner reflector antenna

A simple and successful design for a variable beamwidth corner reflector antenna is presented. The gain and the –3 dB beamwidth of the antenna are predicted using the finite difference time domain (FDTD) method. The predicted results are compared with measured data and good agreement is reported.

Design of corner reflector antennas using FDTD

A design study of the corner reflector antenna is reported, using the finite difference time domain (FDTD) method, which takes account of the finite size of the corner reflector plates. The influence of the geometric parameters on the radiation characteristic is established, and optimum design information is presented. The method has been validated by constructing and measuring an experimental antenna, which gives results in very good agreement with the predictions.

Triple corner reflector antenna and its performancein H-plane

An experimental investigation of a novel corner reflector antenna with improved performance is reported. The corner reflector antenna has been structurally modified by attaching two more reflector elements. The parameters such as the primary corner angle, position, width and angle of the secondary elements have significant effects on the H-plane radiation characteristics of the antenna. Certain symmetric configurations of this triple corner reflector (TCR) antenna provide sharp beams with a gain of the order of 3 dB over that of the conventional corner reflector (CR) antenna.

Dual‐frequency corner‐reflector antennas fed by elements connected to parallel feed lines

AbstractThe dual‐frequency antenna with the same beam‐width is well suited to the mobile communication base station antenna. One candidate is a corner reflector antenna whose elements are connected to a parallel feed line. However, no design equations or analysis have been published. This paper corrects this deficiency through analysis of the characteristics after integration of the two factors, spatial coupling and transmission line, for this antenna. A two dual‐frequency corner reflector antenna is designed. One uses co‐phase feedlines and is a wide band sector‐beam antenna with a 3 dB beamwidth difference of 30° in the field pattern of horizontal plane and a return loss of less than ‐15 dB over a wide frequency range (from 900 MHz to 1.5 GHz). the other uses antiphase feed lines and its beamwidths can be varied by changing the corner angle while the beamwidths are coincident at two frequencies.

Corner reflector antenna with the same beamwidth in two frequency bands

AbstractThe demand for expanded mobile communication capacity is increasing rapidly. It is expected that in addition to the currently used 900‐MHz band, the 1.5‐GHz band will have to be utilized. An antenna is designed so that it has the same sector beamwidth in both bands. The antenna is realized by placing a rod‐type parasitic element close to the driven element which is parallel to a corner reflector having a comer angle of 140°. The absolute beamwidth is determined by the corner length.

Integrated millimeter-wave corner-cube antennas

An integrated corner-reflector antenna has been designed, fabricated and measured at millimeter-wave frequencies. The structure consists of a traveling-wave antenna integrated on a 1.2- mu m dielectric membrane, and suspended in a longitudinal cavity etched in a silicon wafer. A novel traveling wave antenna design, the modified-bend antenna, with an antenna length of 1.2 lambda and spacing 0.96 lambda from the apex, results in a wideband input impedance centered at 140 Omega and low cross-polarization levels. Measurements at 180-270 GHz show a well-defined pattern with low sidelobe levels, and a main-beam efficiency of 93% and 83% at 180 and 222 GHz, respectively. The monolithic approach allows the integration of a matching network and a Schottky-diode or SIS detector at the base of the antenna to yield a low-noise monolithic millimeter-wave receiver.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>