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Horn Antenna (horn + antenna)

Distribution by Scientific Domains
Engineering100%

Selected Abstracts

A compact substrate integrated waveguide H-plane horn antenna with dielectric arc lens

INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING, Issue 5 2007
Wenquan Che
Abstract An H-plane horn antenna constructed into SIW (substrate integrated waveguide) is proposed. It has a dielectric arc lens for better directivity and a simple microstrip transition as feed. The horn, the lens and the transition share the same substrate. The resulting formula from optical principles shows that the suitable dielectric lens can improve the directivity of the antenna significantly. A prototype was fabricated; the antenna size is 39.175 × 14 × 2 mm3. The frequency band is from 25.5 to 28.5 GHz. The measured gain of this antenna is about 9 dB; the bandwidth, at 10 dB return loss, is over 12%. © 2007 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2007. [source]

TEM horn antenna for near-field microwave imaging

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 5 2010
Mark A. Campbell
Abstract Antennas capable of sending and receiving ultra-wideband pulses are required for radar-based microwave breast imaging. This article describes a TEM horn antenna designed to operate over a 2,12 GHz band with specific radiated near-field characteristics. Simulations and experimental measurements are presented, including detection of objects representing tumors. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1164,1170, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25136 [source]

Genetic algorithm optimization of a multisectional corrugated conical horn antenna

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 5 2003
Dooyeong Yang
Abstract This paper presents the design of a wideband corrugated multisectional conical horn using a genetic algorithm (GA). The GA optimizes the length, flare angle, and first slot depth of each section of the horn in order to match the admittance, reduce the voltage standing wave ratio (VSWR) of the horn, and generate the desired pattern. A VSWR of less than 1.6 is obtained over the frequency range 11,18 GHz. The optimized multisectional conical horn antenna has four sections, is less than 7, long, and has very low sidelobe levels. The ratio between ratio between the co-polarization and the cross-polarization patterns is greater than 60 dB. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 38: 352,356, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11058 [source]

Radiation characteristics of a corrugated horn antenna

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 2 2002
Mohammed N. Afsar
Abstract A corrugated horn antenna is modeled using the three-dimensional FDTD method. The computed E-plane radiation pattern shows a good agreement with those measured and calculated using the MoM published in the literature. The H-plane radiation pattern and the cross-polarization patterns for both E- and H-plane are also obtained since the corrugated horn is calculated by a three dimensional model. The radiation characteristics for various frequencies have also been analyzed. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 34: 83,84, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10379 [source]