Results 11 to 20 of about 6,931,187 (117)

Realization of Negative Group Delay Network Using Defected Microstrip Structure [PDF]

International Journal of Antennas and Propagation, 2014
A design of negative group delay (NGD) networks using a U-shaped defected microstrip structure (DMS) and lumped elements is presented in this paper. The signal attenuation characteristics of DMS were utilized to get NGD time.
Girdhari Chaudhary, Yongchae Jeong, Jongsik Lim   +2 more
doaj   +2 more sources

Enhanced Bandwidth of Band Pass Filter Using a Defected Microstrip Structure for Wideband Applications [PDF]

International Journal of Electrical and Computer Engineering (IJECE), 2018
In this paper, the bandwidth enhancement of bandpass filter (BPF) is proposed by utilizing defected microstrip structure (DMS). The initial micro strip BPF which is designed to have the bandwidth 1GHz with the center frequency of 3.5GHz is deployed on ...
Sanae Azizi, Mustapha El Halaoui, A. Kaabal, S. Ahyoud, A. Asselman   +4 more
semanticscholar   +2 more sources

Study on effect of rectangular DMS and DGS on 4 and 8 elements rectangular microstrip linear array antenna

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this experimental study a novel design has been developed to improve the antenna parameters in terms of impedance bandwidth and radiation properties. A 4-element rectangular array antenna (refereed as antenna 1) operating in the range of 10 to 16 GHz ...
S L Mallikarjun, P M Hadalgi, P V Hunagund   +2 more
doaj   +2 more sources

Multimode and Multiband Microstrip Antennas [PDF]

, 2007
This thesis describes original work on the broadband and multiband matching of microstrip patch antennas. Microstrip patch antennas suffer from many constraints on their performance. One major restriction is their narrow impedance bandwidth.
Abunjaileh, Alaa Ibrahim
core   +7 more sources

Balanced‐to‐unbalanced and balanced‐to‐balanced filtering rat‐race couplers using multilayer substate integrated waveguide cavities

IET Microwaves, Antennas &Propagation, Volume 15, Issue 15, Page 1967-1981, 16 December 2021., 2021
Abstract This study reports a class of balanced‐to‐unbalanced (BTU) and balanced‐to‐balanced (BTB) filtering rat‐race couplers (FRCs) based on multilayer substrate integrated waveguide (SIW) cavities. Input and output ports can perform the functions of balanced and unbalanced terminals to implement various operating states.
Xian Wang, Dongfang Zhou, Dewei Zhang, Yue Wang, Dalong Lv, Yi Zhang   +5 more
wiley   +1 more source

Retracted: Wideband circularly polarised antenna ‘multi‐input‐multi‐output’ for wireless UWB applications

IET Wireless Sensor Systems, Volume 11, Issue 6, Page 259-274, December 2021., 2021
Abstract Circularly polarised multiple‐input‐output antennas embedded in wearable wireless devices attract importance in the individual security and beauty fabric modelling industry involving technology embedded on‐clothes wearables. A circularly polarised wideband is designed and analysed in the present design‐study where a wearable application uses a
Pillalamarri Laxman, Anuj Jain
wiley   +1 more source

Novel balanced single/dual‐band bandpass filters based on a circular patch resonator

IET Microwaves, Antennas &Propagation, Volume 15, Issue 2, Page 206-220, 5 February 2021., 2021
Abstract A new strategy for designing single‐band and dual‐band balanced bandpass filters (BPFs) based on a circular patch resonator is proposed in this study. By altering the output balanced ports of the balanced BPFs to inhibit or transport the TM31 mode of the circular patch resonator under the differential‐mode (DM) excitation, a single‐band or ...
Qiao Zhang, Chang Chen, Weidong Chen, Jun Ding, Hualiang Zhang   +4 more
wiley   +1 more source

[Retracted] Circularly Polarized Wideband Fabric Stealth Multiple‐Input Multiple‐Output Antenna for Ultrawideband Applications Useful for Wireless Systems Wearable on Garments

International Journal of Antennas and Propagation, Volume 2021, Issue 1, 2021., 2021
Stealth wearable wireless devices are gaining much attention in the personal security and fashion designing industry. A multiple‐input multiple‐output wideband circularly polarized antenna wearable on a dress (textile‐related), which is immune to bending, is described in this paper, where a wearable on fabric dress application uses the MIMO techniques.
Pillalamarri Laxman, Anuj Jain, Renato Cicchetti   +2 more
wiley   +1 more source

UWB CPW fed 4-port connected ground MIMO antenna for sub-millimeter-wave 5G applications

Alexandria Engineering Journal, 2022
This paper embodies the design and development of a compact Coplanar Waveguide (CPW) fed connected ground Multiple- Input-Multiple-Output (MIMO) antennas operating in the sub-millimeter-wave 5G New Radio (NR) n257/n258/n261 bands.
Amit Patel, Arpan Desai, Issa Elfergani, Alpesh Vala, Hiren Mewada, Keyur Mahant, Sagar Patel, Chemseddine Zebiri, Jonathan Rodriguez, Esraa Ali   +9 more
doaj   +1 more source

A quad‐band defected microstrip structure loaded bandpass filter for standard GPS, WiFi, WLAN, and WiMAX applications

International journal of RF and microwave computer-aided engineering, 2022
A quad‐band bandpass filter is proposed using a defected microstrip structure (DMS) for GPS, WiFi, WLAN, and WiMAX applications. This filter uses a stub‐loaded stepped‐impedance resonator (SL‐SIR).
Sepideh Shakeri, M. Dousti, B. Ghalamkari   +2 more
semanticscholar   +1 more source