Radiation mechanism of slot antenna

Forming ultrawideband (3.2:1) end-fire radiation mechanism of a low profile dipole- slot antenna backed by a ground plane at wavelengths close to theIt has been shown that at this frequencies the dipole-slot radiation differential phase shift in forward-backward directions is close to 180°. Therefore... Slot Antenna - an overview | ScienceDirect Topics

RESONANT LENGTH CALCULATION AND RADIATION PATTERN SYNTHESIS ... Abstract—Main intension is to calculate admittance and radiation pattern of longitudinal shunt slot in rectangular waveguide using Method of Moments (MoM) technique. Resonant length calculation of the slot is a critical parameter in the design of waveguide slot array antenna. All computed results are compared with simulated results. MicroStrip Antenna - SlideShare Radiation efficiency, h, and unloaded radiation Q, Q o, as a functionof substrate thickness .Figure shows that :A microstrip patch that uses a thicker substrate is more efficient.In addition, as the substrate thickness increases, the radiation Q of the antenna decreases.Thus, impedance bandwidth increases with increasing substrate thickness. A novel approach for miniaturization of slot antennas ...

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Planar Integrated Antenna Technology | Tapered Slot … The patch antenna has several benefits. This type of antenna features a broadside radiation pattern that allowsOther feed mechanisms have been used to increase bandwidth, including proximity and apertureThe slot antenna, comprising a narrow slit in a ground plane, is a very versatile antenna. On the radiation mechanism of implanted antennas with… The radiating mechanism of a class of implanted antennas is investigated. The patch like antennas are bent on a titanium-based alloy made artificial bone that acts as a ground plane. For this investigation, the antennas are embedded in two different bio-compatible materials, namely... ARS - Radiation Efficient Unidirectional Low-Profile …

circular disc antenna ofiers narrow bandwidth, an ofiset microstrip-fed line is used and a strip is inserted at the radiating edges in the circular slot patch to enhance the wideband characteristics of the slot antenna. The proposed slot antenna greatly demonstrates to cover the widebands of UHF and microwave for RFID application. 3.

US3936836A - Z slot antenna - Google Patents An improved antenna of a coaxial type utilizing Z-shaped slots disposed in the outer conductor to provide an omnidirectional antenna pattern. Current coupling to the slots is achieved by means of the transverse portion of the Z slot. US3369243A - Log-periodic antenna structure - Google Patents The antenna here described comprises not only the folded elements whose lengths and spacings are established in accordance with the scale factors, but, in addition, comprises a series of phasing elements located within the folded elements … US9356358B2 - Architectures and methods for novel antenna

The impedance of the slot antenna (ZS) is related to the equivalent dipole (ZD) by : ... Of course this changes the radiation pattern and the impedance, and the ... but the basic mechanism of how they work remains the same.

US7091918B1 - Rectifying antenna and method of manufacture In accordance with the present invention, an aperture rectenna is provided where the substrate is transparent and of sufficient mechanical strength to support the fabricated structure above it. Microsoft Word - str_111-116.doc The use of a resonant cross-slot enlarges cross-slot coupled, microstrip antenna with resonant additionally the AR bandwidth ( bw US6642898B2 - Fractal cross slot antenna - Google Patents A fractal cross slot broad band antenna comprises a five layer configuration including a radiating fractal cross slot layer having a plurality of antennas each comprising a plurality of radiating arms.

Gain Enhancement of a Wide Slot Antenna Using

A New Aperture Coupled Microstrip Slot Antenna - University of Calgary crostrip slot antennas to improve their radiation performance. The proposed design is .... radiator and two patches, the operation mechanism for the in- creased ... Micro-strip line feed „I‟ shaped slot Antenna with finite slotted ground ... antenna and slot antenna were successfully used to achieve the required ... Radiation and transmission line modes generated on the ..... mechanism. Slot ... Twin Slot Antenna Structures - The University of Texas at Austin to treat the twin slot antenna structure as a source of radiation rather than as a receiver. ..... observed, three other loss mechanisms may also contribute. First ... Print chapter - IntechOpen

Slot Microstrip Antenna for 2.4GHz RFID Reader Application respectively. By using the strip and slot, the proposed antenna deals properly with frequency shift for real application when embedded inside a handheld reader. V. CONCLUSION Thus the slot microstrip antenna was designed.The antenna shows good performance at 2.4GHz. Antenna gain, directivity, efficiency and return loss are measured. CPW-fed ultra-wideband slot antenna with broadband dual ... A slot antenna for WLAN applications , a CPW-fed monopole antenna , a slot antenna by using artificial transmission line , a printed antenna by combining slot and monopole modes are studied for dual/triple-band circularly polarized communication services. Although the broadband, dual and multiband circular polarization characteristics are ... RADIATION PATTERN OF PATCH ANTENNA WITH SLITS RADIATION PATTERN OF PATCH ANTENNA WITH SLITS V.Karthikeyan1 and V.J.Vijayalakshmi2 1Department of ECE, SVS College of Engineering, Coimbatore, India ` `2Department of EEE, Sri Krishna College of Engg & Tech., Coimbatore, India ABSTRACT The Microstrip antenna has been commercially used in many applications, such as direct broadcast