scispace - formally typeset
Search or ask a question
Author

Gnanasundar S

Bio: Gnanasundar S is an academic researcher from VIT University. The author has contributed to research in topics: Microstrip & Microstrip antenna. The author has an hindex of 2, co-authored 3 publications receiving 8 citations.

Papers
More filters
Proceedings ArticleDOI
26 Mar 2015
TL;DR: In this paper, the authors analyzed the Electromagnetic band gap structure that acts as a surface wave suppresser for 2.4 GHz frequency range and the proposed structure is analyzed using High Frequency Structural Simulator.
Abstract: This paper analyses the Electromagnetic Band Gap Structure that acts as surface wave suppresser. The High impedance characteristics for the design frequency is obtained by two port transmission line method. Application of the Electromagnetic Band Gap Structure for isolation between antennas is carried out. Reducing the size of EBG structure is the main aim of the paper and it is carried out by the use of C shaped slots on every unit cell structure. This design provides satisfactory characteristics for using the antenna in 2.4GHz frequency range. The proposed structure is analyzed using High Frequency Structural Simulator.

4 citations

Proceedings ArticleDOI
26 Mar 2015
TL;DR: A compact size ultra-wide band pass and bandstop filter using composite right/left-handed transmission line loaded with complementary split ring resonators (CSRRs) in planar technology is presented and using resonant type CSRR metamaterial is implemented to convert the dual band to wide band.
Abstract: In this paper, a compact size ultra-wide band pass and bandstop filter using composite right/left-handed (CRLH) transmission line loaded with complementary split ring resonators (CSRRs) in planar technology is presented. The bandpass filter resonating at two resonant frequency band is designed with transmission line loaded with short circuited stub is presented. The using resonant type CSRR metamaterial is implemented to convert the dual band to wide band is shown. Also a comparative study of different types of CSRR metamaterial with their equivalent circuit and their effect on the results is briefly discussed. The total dimension of Compact filter is 9.6×6.5 mm with microstrip line which is above the Roger 3010 substrate gives the passband from 5 GHz to 12 GHz with the return loss of 15dB which is 3GHz improvement in bandwidth comparing with the reference paper. Such small device with wide bandwidth can be easily integrated into the communication systems requiring high data rates.

3 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


Cited by
More filters
10 Oct 2005
TL;DR: In this article, simple squares of simple squares are compared to convoluted and interleaved elements to reduce band gap frequency for fixed periodicity and a reduction of 42% was obtained for one (Hilbert) convolution.
Abstract: Electromagnetic band-gap structures of simple squares are compared to convoluted and interleaved elements to reduce band-gap frequency for fixed periodicity. A reduction of 42% in band gap frequency is obtained for one (Hilbert) convolution. This frequency reduction increases to 55% when adjacent elements in the structure are interleaved. (6 pages)

13 citations

Journal ArticleDOI
TL;DR: The simulated results show that the antenna gain has been increased throughout the entire bandgap of EBG operating in 2.25 to 4.25 GHz, and rest of radiation performances remain highly preserved.
Abstract: —In this research work, we have proposed an inset feed rectangular microstrip patch antenna operating at 2.45 GHz in the Industrial, Scientific and Medical (ISM) band for wireless communication. This conventional design of antenna has been modified with defected ground (DG) plane. When this is optimized back to 2.45 GHz, a miniaturization of 37.9 % of patch size has been achieved along with the enhancement in radiation performance. This design is then modified and loaded with mushroom-type Electronic Band-Gap (EBG) structure on the top of dielectric FR-4 substrates. This creates a band-gap region that suppresses the surface waves considerably, thus improves the overall performance and functionality of the proposed antenna. Radiation characteristics such as S-parameters, directivity, gain, efficiency, bandwidth, VSWR and Z11 of microstrip antenna have been performed and compared. The simulated results show that the antenna gain has been increased throughout the entire bandgap of EBG operating in 2.25 to 4.25 GHz. Moreover, rest of radiation performances remain highly preserved.

11 citations

Proceedings ArticleDOI
G. Anitha1, Suresh Kumar M1, M. Ayyadurai1, Senthil Kumar C1, G. Ramkumar1 
03 Jun 2021
TL;DR: In this paper, the authors proposed a novel miniaturization single bit MEMS phase offset (shifter) using triangular Micro-electro mechanical system (MEMS) switches.
Abstract: This article proposes a novel miniaturization single bit MEMS phase offset (shifter) using triangular Micro-electro mechanical system (MEMS) switches. The primary goal in the design of a single-bit switched delay line digital phase offset is to reduce the area of phase offset bits and the minimize the number of switches, which aids in the reduction of mechanical switching errors during the turn ON and OFF operation. The proposed phase shifter is simply based on a switched delay route and reference route configuration, which is connected with a gold connection sequence switch. The phase offset is built on 50 Ohm coplanar waveguide (CPW) configuration, which would generally be used in radio frequency (RF) MEMS systems. The RF and mechanical characteristics of the proposed switches were analyzed using Intellisuite software, and the finite element method was carried out in the HFSS software. The performance of the S 11 (return loss) and S 21 (insertion loss) of the miniaturized single bit phase shifter (22.5°) are 23 dB and 0.55 dB, respectively. The miniaturization phase offset is reduced by 30% by using three triangular SPST switches.

10 citations