TAPERED MEANDER SLOT AND COPLANAR SLOT ANTENNA FOR DUAL ... slot line widths give rise to lower operating frequency of the antenna. In this paper we show that a dual-frequency operation is achieved by using a tapered meander slot antenna with a short-ended microstrip line feed. The tapered meander slot antenna was derived from [4] in which a meander line was tapered to achieve operation at lower ... Design Concepts for a Miniature Pavement GPR Antenna In future studies, researchers hope to build a field unit capable of stand-alone operation or a unit that will be mounted on a falling weight deflectometer (FWD) to provide layer thickness information at each test location. . ey or GPR, Antenna Design, Pavements, Slot-Line Antennas . 1str1 ution tatement No restrictions.
In this paper, the effects of slot loaded microstrip antennas are presented. Two Rectangular slots of size 2.282 mm × 6 mm are loaded on to the microstrip antenna and their performance is observed. The variation in parameters like 10db bandwidth, resonant frequency, Return loss, Radiation Pattern...
Design of Slot Antenna for Wideband Applications - ERNET antenna is from 2.69 to 10.24 GHz, I. INTRODUCTION Microstrip antennas can be divided into two basic types by structure, namely microstrip patch antenna and microstrip slot antenna. The slot antennas can be fed by microstrip line, slot line and CPW. In this paper, we presented the design of slot antenna fed by microstrip line. The designed Compact Rectangular Slot Patch Antenna for Dual Frequency ... This paper presents the design and simulation of a compact rectangular slot patch antenna for dual frequency operation at 2.4 GHz and 5.2 GHz using the inset feed technique. The simulation of the designed antenna was done with the aid of computer simulation technology (CST) microwave studio version 12. A Dual-Band Slot-Embedded Microstrip Antenna for Dual ... PDF | In this study, a new slot embedded microstrip antenna for dual-band dual-polarization operation is proposed. The antenna comprises a single layer structure with a square radiating patch ...
US3063049A - Linearly polarized monopulse lobing antenna having…
mixer operation in the band 400-570 GHz. We present the antenna beam pattern of a ring slot antenna on a silicon elliptical lens, a DSB noise temperature of the receiver and a FTS spectrum. The measured receiver DSB noise temperature is analyzed. 157 Wideband Stub-Loaded Slotline Antennas Under Multi-Mode ... Prototype antennas are then designed and fabricated to experimentally validate the principle and design approach. It is shown that the operation fractional bandwidth of the proposed slotline antenna could be effectively increased to 31.5% while keeping an inherent narrow slot structure. Wideband Stub-Loaded Slotline Antennas Under Multi-Mode ... antennas[9]–[11],ratherthantothatoftheslotantennas.Consequently, it is a challenging task to widen the operating bandwidth of a narrow slot antenna while keeping its basic properties to be remained.
Design of Slot Antenna for Wideband Applications - ERNET
Radar Basics - Slot Antennas The feeding of the slot antenna can be done with ordinary two-wire line. ... This wavelength differs from the wavelength in free space and is a function of the ... Antennas: The Slotted Waveguide Antenna - Antenna Theory The basic principles of slot antenna arrays in waveguides are presented, ... 0.1 of a wavelength) and 0.5 wavelengths long (at the center frequency of operation). ... Instead, the waveguide is used as the transmission line to feed the elements. A novel approach for miniaturization of slot antennas - Semantic Scholar
US2996713A - Radial waveguide antenna - Google Patents
A NEW PLANAR FEED FOR SLOT SPIRAL ANTENNAS ... To verify the operation of this new feed, and the antenna in general, an 18-mil thick dielectric substrate with a dielectric constant of 4.3 was chosen (FR-4), and an archimedean slot spiral antenna with an outer diameter of 6" Design and Development of a Tapered Slot Vivaldi Antenna ... antenna [12-14]. In [13] the traditional micro strip-to-slot line feed transition of a Vivaldi antenna was replaced with a micro strip-to-parallel strip line. The Antipodal Vivaldi Antenna (AVA) obtained this way overcomes the practical limitations of a conventional Vivaldi antenna exhibiting a very wide operation bandwidth. A NEW PLANAR FEED FOR SLOT SPIRAL ANTENNAS A NEW PLANAR FEED FOR SLOT SPIRAL ANTENNAS ... To verify the operation of this new feed, and the antenna in general, an 18-mil thick dielectric substrate with a dielectric constant of 4.3 was chosen (FR-4), and an archimedean slot spiral antenna with an outer diameter of 6" Design and Development of a Tapered Slot Vivaldi Antenna ...
SLOT-FED SWITCHED PATCH ANTENNA FOR MULTI- PLE FREQUENCY ... The antenna is fed by a coplanar waveguide via capacitive coupling slot. The antenna allows easy reconflgurability of the frequency band of operation by incorporating switches in the coupling slot. The resonant frequency of the antenna can be adjusted by setting the switches on or ofi. Two prototypes are presented. Slot Loaded Square Microstrip Patch Antenna for Dual Band ...