Results 21 to 30 of about 453,146 (211)

Filtenna with Frequency Reconfigurable Operation for Cognitive Radio and Wireless Applications

open access: yesMicromachines, 2023
A reconfigurable wideband monopole antenna is introduced in this paper for cognitive radio and wireless applications. The reconfigurability was achieved by four varactor diodes embedded in the band pass filter (BPF) structure which was integrated with ...
Mahmoud A. Abdelghany   +3 more
doaj   +1 more source

Inclusion of Microstrip and Wire Circuits in the FDTD Method [PDF]

open access: yes2007 Workshop on Computational Electromagnetics in Time-Domain, 2007
With the increasing requirement to analyse structures with great complexity and significant size, existing electromagnetic analysis tools are showing their limitations. For instance, an integrated circuit together with its interconnects and package presents a considerable challenge.
Railton, CJ, Paul, DL
openaire   +3 more sources

A Frequency Reconfigurable Folded Antenna for Cognitive Radio Communication

open access: yesMicromachines, 2023
In this work, a spectrum-sensing monopole antenna was used to operate in different frequency bands for cognitive radio applications. The proposed antenna consists of a folded monopole antenna with a partial ground plane, and it can be used for various ...
Ahmed A. Ibrahim   +3 more
doaj   +1 more source

A Ku-Band Low-Loss Traveling-Wave Power Divider using a Hollow Substrate Integrated Waveguide and Its Microstrip Transition [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2020
In this paper, we present a Ku-band low-loss traveling-wave power divider that uses a hollow substrate integrated waveguide (HSIW). For easy connection with microstrip-based devices and circuits, a low-loss transition between the microstrip line and the ...
Sung-June Hong   +4 more
doaj   +1 more source

Semi-analytic models for the characterization of microstrips [PDF]

open access: yes, 2006
Aim of this thesis is that to furnish some methodologies for the accurate evaluation of the electromagnetic characteristics of a microstrip. This results particularly useful for the extraction of equivalent circuital parameters, needed from circuit ...
Assante, Dario
core   +1 more source

Design of Wideband Microstrip to SICL Transition for Millimeter-Wave Applications

open access: yesIEEE Access, 2020
In this communication, the design and working principle of a wideband microstrip to substrate integrated coaxial line (SICL) planar transition for millimeter-wave applications is presented.
Idury Satya Krishna, Soumava Mukherjee
doaj   +1 more source

Analysis of Microwave Passive Circuits Designed Using 3D Printing Techniques

open access: yesElektronika ir Elektrotechnika, 2019
This work presents the results of a preliminary study conducted to assess the viability of using 3D printing techniques for the manufacturing of microwave passive circuits based on microstrip techniques, both for prototyping new low-cost devices and for ...
Hector Garcia-Martinez   +4 more
doaj   +1 more source

An analysis of microstrip with rectangular and trapezoidal conductor cross sections [PDF]

open access: yes, 1990
The finite-difference time-domain (FDTD) technique is used to analyze boxed microstrip with both rectangular and trapezoidal cross sections. It is confirmed that the exact shape of the conductor has a marked effect on the effective permittivity of the ...
Railton, CJ, McGeehan, JP
core   +1 more source

Radiation losses in microstrip circuits [PDF]

open access: yes
The purpose of this study is to investigate radiation losses in microstrip circuits. Expressions are derived to evaluate the radiation resistances (or conductances) for single terminated, open and short-circuited lines.
Lo, Sui-Sang
core   +4 more sources

RF communication between dual band implantable and on body antennas for biotelemetry application

open access: yesScientific Reports
This paper investigates two antennas for implantable communication, which are a wide-band, low-profile transmitting antenna with a circular polarization (CP) merit immersed in a lossy medium and a corresponding wide-band, low-profile receiving antenna ...
Yara A. Kamel   +3 more
doaj   +1 more source

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