Results 251 to 260 of about 19,740 (298)

2D defected ground structures in microstrip line

2012 5th International Conference on Computers and Devices for Communication (CODEC), 2012
In this paper, two-dimensional (2D) defected ground structures (DGS) are proposed in microstrip line. The dumbbell structure is added as a unit-cell in a systematic manner in both horizontal and vertical directions to construct the 2D-DGS. This technique best utilizes the area to get very low stop band frequencies.
Chandra Shekhar Gautam, Avanish Bhadauria   +1 more
openaire   +1 more source

Design of H-shape Defected Ground Structure

2020 IEEE International RF and Microwave Conference (RFM), 2020
This paper presents the design of an H-shape defected ground structure (DGS). Full EM-wave simulation of the design was carried out by using the Computer Simulation Technology (CST) software. The influence of some DGS design parameters on the resonant frequency was simulated and studied.
N. A. Razali, N. A. Zakaria, K. K. Mohd Shariff, N. E. Abd Rashid, Z. Ismail Khan, S. A. Enche Ab Rahim   +5 more
openaire   +1 more source

Electrically small antenna with defected ground structure

2012 42nd European Microwave Conference, 2012
In this paper, a dumbbell shaped defected ground structure (DGS) is proposed to suppress higher order harmonics of an electrically small antenna. A slot loading technique is applied to a well-know low-profile antenna, the area miniaturization of a semi circular microstrip patch antenna by inserting a number of slits parallel to the radiating edges, is ...
Hocine Kimouche, Sofiane Oukil
openaire   +1 more source

Harmonic suppression using rectangular defected ground structure

2016 International Conference on Advances in Electrical, Electronic and Systems Engineering (ICAEES), 2016
This paper is on the design and performance of a wide rectanglular microstrip antennas with slots that cover frequency of 900 MHz, 1800 MHz, 2100 MHz also 2600 MHz using defected ground structure (DGS) with minimum complexity of antenna design to achieve wideband harmonic suppression.
Puteri Alifah Ilyana Nor Rahim, Syarfa Zahirah Sapuan, Mohd Zarar Mohd Jenu   +2 more
openaire   +1 more source

Multi-band antenna using defective ground structure

2015 International Conference on Communications and Signal Processing (ICCSP), 2015
A multi-band antenna for Wi-Fi/WiMAX operation is proposed. Defected ground structure (DGS) is used in this antenna with a plus shape slot in fed line to get an increase in gain of antenna. The investigated antenna has a rectangular patch and two inverted L- shape strips. The designed antenna has substrate dimension of size 21×31, and operates over the
Nikhil Pathak, null Chandrasekaran N.
openaire   +1 more source

Compact four-band diplexer using defected ground structures

Frequenz, 2021
Abstract In this paper, a novel four-band diplexer using defected ground structures with compact size, low insertion loss and high isolation is presented. To begin with, there are 16 defected ground stepped impedance resonators (DSIRs) controlling four passbands characteristics. Every four DSIRs can generate one passband.
Liang Li, Jianzhong Chen, Yuanbao Chen
openaire   +1 more source

Modeling of bandpass filter using defected ground structure and defected microstrip structure

Journal of Computational Electronics, 2013
In this present work a novel concept for designing of tunable bandpass filter has been introduced with the help of end coupled microstrip transmission line, defected ground structure (DGS) and defected microstrip structure (DMS). Utilizing this concept, one bandpass filter of 8 GHz center frequency with 30 % fractional bandwidth (FBW) at ?3 dB has been
openaire   +1 more source

Quasi-static modeling of defected ground structure

IEEE Transactions on Microwave Theory and Techniques, 2006
A quasi-static equivalent-circuit model of a dumbbell-shaped defected ground structure is developed. The equivalent-circuit model is derived from the equivalent inductance and capacitance developed due to the perturbed return current path on the ground and the narrow gap, respectively. The theory is validated against the commercial full-wave solver CST
N.C. Karmakar, S.M. Roy, I. Balbin
openaire   +1 more source

Branch-Line Couplers Using Defected Ground Structure

IEICE Transactions on Communications, 2005
In this letter, a novel design of a branch-line coupler with considerable reduction in its size and suppressed harmonic passband is proposed. By embedding a defected ground structure (DGS) unit cell under a microstrip line, compact branch-line couplers are easily achieved. The electrical length is scaled appropriately according to the slow-wave effect.
openaire   +1 more source

Miniaturized defected ground structure using lumped capacitor

Microwave and Optical Technology Letters, 2009
AbstractIn this letter, the miniaturized bandstop filter with lumped capacitor element is presented. The resonator is based on a stopband characteristic of U‐shaped defected ground structure (DGS) section. Lumped capacitor element is embedded into DGS section without altering the geometry.
openaire   +1 more source