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Author

Veeramani A

Bio: Veeramani A is an academic researcher from VIT University. The author has contributed to research in topics: Microstrip & Microstrip antenna. The author has an hindex of 1, co-authored 3 publications receiving 6 citations.

Papers
More filters
Proceedings ArticleDOI
27 Apr 2015
TL;DR: This paper compares the coplanar waveguide and microstrip feed of log periodic array antennas in terms of gain, bandwidth, design complexity and also the effect of the antenna on different substrates.
Abstract: Log periodic antennas are widely used in ultra wideband applications. This paper compares the coplanar waveguide and microstrip feed of log periodic array antennas in terms of gain, bandwidth, design complexity and also the effect of the antenna on different substrates. The design criteria of both types of antennas are discussed in detail. The two different types of feeding techniques for the antenna are simulated using High Frequency Structure Simulator which uses efficient Finite Element Method for rigorous electromagnetic analysis. The results are compared and comparison table gives the clear idea of choosing the feed and also the substrate material.

4 citations

Proceedings ArticleDOI
26 Mar 2015
TL;DR: This paper presents design of antenna for worldwide interoperability for microwave access and Wireless Local area network and uses inset feed for achieving a good impedance matching with compactness.
Abstract: This paper presents design of antenna for worldwide interoperability for microwave access (2.3–2.4GHz and 2.5–2.69GHz) and Wireless Local area network (2.4–2.484GHz & 5.15 GHz). The proposed design uses inset feed for achieving a good impedance matching with compactness. The fundamental frequency of the design is 2.6 GHz; Implementing defected ground structure provides additional frequency at 5.15 GHz and shifts the fundamental frequency to 2.5GHz. Different lengths of DGS and its effect on antenna performance and resonance frequency are analyzed. High Frequency Structure simulator is used to analyze the design.

1 citations

Proceedings ArticleDOI
02 Apr 2015
TL;DR: The novel technique of developing Chebyshev Dumbbell DGS low pass filters (LPFs) with compensated microstrip line has better rejection bandwidth at the X-band frequency.
Abstract: The novel technique of developing Chebyshev Dumbbell DGS low pass filters (LPFs) is presented in this paper. The ground plane of a standard 50-ohm transmission line is perturbed by Dumbbell called defected ground structure (DGS) to generate ultra-rejection band at X-Band that is beneficial to higher order harmonic suppression. A comparison of Meander shaped, circular complementary split ring resonator (CSRR) and Dumbbell DGS has been evaluated. An improved Chebyshev Dumbbell DGS LPF with compensated microstrip line has better rejection bandwidth at the X-band frequency.

1 citations


Cited by
More filters
Journal ArticleDOI
TL;DR: In this paper, the authors proposed a compact wideband band-stop filter using complementary split ring resonators (CSRRs) as the fundamental element, and the relation between the geometry and resonances of the CSRR were studied analytically along with their field distribution to determine the factors governing coupling between the rings of the SRR.
Abstract: The objective of this work is to achieve a compact wideband band-stop filter using complementary split ring resonators (CSRR) as the fundamental element. The relation between the geometry and resonances of the CSRR were studied analytically along with their field distribution to determine the factors governing coupling between the rings of the CSRR. The effects of the inner-outer ring orientation on resonances of the CSRR has been studied and the resulting properties have been used to design the proposed compact wideband band-stop filter prototype operating with a center frequency of 2.5 GHz and a bandwidth of 1 GHz. The area of the proposed filter is 0.078 λg2 with a fractional bandwidth of 39.76%. This structure has following advantages: more compact, wide bandwidth and occupies less area. The fabricated prototype was tested and the results were promising representing this works potential.

7 citations

Journal ArticleDOI
TL;DR: In this article, a printed log-periodic dipole antenna (LPDA) was proposed for ultra wide bandwidth (UWB) applications, which comprises of cascading four U shaped elements of different line lengths with balun circuit to improve the antenna impedance matching.
Abstract: This paper proposes a printed log-periodic dipole antenna (LPDA) for ultra wide bandwidth (UWB) applications. The antenna comprises of cascading four U shaped elements of different line lengths with balun circuit to improve the antenna impedance matching. The proposed antenna dimensions are 50 × 50 mm2 with FR4 substrate thickness 0.8 mm. Full-wave EM solver HFSS (High Frequency Structure Simulator) is used for modeling the proposed antenna. The pulse distortion is verified by the measured the proposed antenna performance with virtually steady group delay. The simulation and experimental results show that the proposed antenna exhibits good impedance matching, stable radiation patterns throughout the whole operating frequency bands, acceptable gain and stable group delay over the entire operating band. An UWB extended from 1.85 GHz to 11 GHz is obtained, and the average antenna gain is about 5.5 dBi over the operating band with peak gain around 6.5 dBi and 70% average radiation efficiency.

7 citations

Journal ArticleDOI
TL;DR: This paper describes the use of a logarithmic architecture in the design of microstrip antenna arrays, creating structures with high gain and ultra-wide bandwidth.
Abstract: Modern communication systems require high bandwidth to meet the needs of the huge number of sensors and the growing amount of data consumed, and an exponential growth is expected in the future with the integration of internet of things networks. Spectrum regions in the millimeter waves have aroused new interests, mainly because of the contiguous bands available to meet these needs. In return, and to combat the high losses of propagation in these frequencies, higher gain antennas are needed. This paper describes the use of a logarithmic architecture in the design of microstrip antenna arrays, creating structures with high gain and ultra-wide bandwidth. Three different solutions are presented with five, seven, and nine elements, reaching about 25%, 30%, and 44% of bandwidth, achieving ultra-wideband behavior, efficient and with a compact structure operating at frequencies in around 28 GHz.

5 citations

Proceedings ArticleDOI
01 Aug 2016
TL;DR: Modified planar log periodic antennas are proposed which assure an enhanced gain of 15 dBi at 2.45 GHz in advanced wireless communication applications.
Abstract: Advanced wireless communication applications demands antennas with enhanced radiation properties over a wide bandwidth. Log Periodic Dipole Antenna array (LPDA) is a new class of antennas that provide constant radiation properties over a wide bandwidth. In this paper, modified planar log periodic antennas are proposed which assure an enhanced gain of 15 dBi at 2.45 GHz. Two designs of LPDA are analysed which provide provide enhanced gain and highly directive radiation pattern over a bandwidth 1 GHz to 9 GHz.

4 citations