A dual loop antenna design for hepta-band wwan-lte metal-rimmed smartphone applications

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• Abstract:
• Introduction:
• Literature Survey:
• System Analysis:
• Existing System:
• Disadvantages:
• Proposed System:
• Advantages:
• System Requirements:
• Block Diagram:
• Working Flow Diagram:
• Circuit Diagram:
• Implementation:
• Modules Description:
• System Study:
• System Testing:
• Software Description:
• Sample code:
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A DUAL-LOOP ANTENNA DESIGN FOR HEPTA-BAND
WWAN/LTE METAL-RIMMED
SMARTPHONE APPLICATIONS
TITLE
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ABSTRACT
A simple direct-fed dual-loop antenna capable of providing hepta-band WWAN/LTE
operation under surroundings of an unbroken metal rim in smartphone applications is
proposed. The greatest highlight of this proposed antenna is that it provides a simple
and effective multiband antenna solution for an unbroken metal-rimmed smartphone.
The unbroken metal rim with 5 mm in height embraces the system circuit board of 130
70 mm . Two no-ground portions of 10 70 mm and 5 70 mm are set on the top and
bottom edge of the system circuit board, respectively. In-between the two separate no-
ground portions, there is a system ground of 115 70 mm connected with he unbroken
metal rim via a small grounded patch which divides the unbroken metal rim into two
strips..
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Microstrip patch antennas has many advantage due to light weight and small size, low cost but also have some disadvantage as low gain , narrow band width these are the two important parameters. This design shows how we can increase the performance of the patch antenna by using metamaterials or how we can improve the gain & bandwidth. Here it provide the introduction of meta materials and microstrip patch antenna after that describe the parameter of microstrip patch antenna which can improve by using metamaterials and discuss future scope and application of metamaterials.[6]. The Metamaterial based antenna is designed for some improvement in the performance of directivity gain, return loss and size of circuit area. The aim is to design and fabricate metamaterial antenna and study the effect of antenna dimensions Length (L),Width (W) and substrate parameters relative Dielectric constant (r), substrate thickness on Radiation parameters of Band width. Low dielectric constant substrates are generally preferred for maximum radiation. The conducting patch can take any shape but rectangular and circular configurations are the most commonly used configuration. Other configurations are complex to analyze and require heavy numerical computations. The length of the antenna is nearly half wavelength in the dielectric; it is a very critical parameter, which governs the resonant frequency of the antenna. In view of design, selection of the patch width and length are the major parameters along with the feed line depth. The results obtained after simulation in High Frequency Structure Simulator (HFSS) were so much effective with the considerable enhancement in the values of directivity, bandwidth. Modelling of this omega shaped patch antenna has revealed results that are suitable AISSMS COE, M.E. E&TC (MICROWAVE) YEAR 2014-15 14 METHODOLOGY for RFID antenna design. It simulated a rectangular patch antenna with metamaterial included which has much higher directivity and bandwidth that can be employed for UHF band which is one of the pre requisite of the following era. RFID has been one of the greatest contributions of the 21st century. It has many implementations in different fields may be in medical, military applications, transportation, tracking items etc. The main barrier for widespread deployment of this technology is its cost barrier which can be resolved through use of modern technologies for building circuits with minimal costs.

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