Results 71 to 80 of about 4,683 (209)

Sub‐THz Antenna With Graphene Enabled Beam Steering for THz Communication

Engineering Reports, Volume 7, Issue 8, August 2025.
This study introduces a sub‐THz planar antenna for THz communication and sensing with beam steering capabilities. Using a SiO2 substrate, copper radiating elements, and graphene slits, the design achieves a 29 GHz bandwidth at a 0.3 THz center frequency.
Sher Nawaz, Waleed Tariq Sethi, Latif Jan, Mohammad Haseeb Zafar   +3 more
wiley   +1 more source

Broadband HMSIW antenna using a demi hexagonal ring slot for X-band application

Jurnal Ilmiah SINERGI
Microstrip antennas offer several advantages, including small size, easy fabrication, controllable polarity and radiation patterns, and easy integration with other components.
Dian Widi Astuti, Muslim Muslim, Umaisaroh Umaisaroh, Huda A Majid, Syah Alam   +4 more
doaj   +1 more source

A Fast Frequency Sweep – Green’s Function Based Analysis of Substrate Integrated Waveguide [PDF]

, 2012
In this paper, a fast frequency sweep technique is applied to the analysis of Substrate Integrated Waveguides performed with a Green’s function technique.
Abaei, E., Amendola, G., Arnieri, E., Costanzo, S., Mehrshahi, E.   +4 more
core   +1 more source

Substrate-Integrated Folded Waveguide Slot Antenna [PDF]

, 2005
In recent years a number of researchers have proposed novel techniques for fabricating rectangular waveguide using microwave integrated circuit techniques.
Batchelor, John C., Grigoropoulos, N., Langley, Richard J., Sanz-Izquierdo, Benito, Young, Paul R.   +4 more
core   +1 more source

Mechanical Tuning of Air‐Filled Substrate Integrated Waveguide Cavities by Employing Dielectric Rods

Microwave and Optical Technology Letters, Volume 67, Issue 8, August 2025.
ABSTRACT This study presents a simple method to obtain tunable cavity resonators in air‐filled substrate integrated waveguide (AFSIW) technology. It is based on the insertion of a dielectric rod from an opening placed on a side of the SIW cavity, whose resonance frequency is varied by changing the penetration depth of the rod. To avoid power leakage, a
Nicolò Delmonte, Riccardo E. Saino, Cristiano Tomassoni, Maurizio Bozzi   +3 more
wiley   +1 more source

A Temperature‐Dependent Linear RF Switch Model for Common‐Gate High‐Frequency GaN HEMT Transistors

International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Volume 38, Issue 4, July/August 2025.
ABSTRACT This paper reports a temperature dependent high frequency monolithic microwave integrated circuit (MMIC) linear radio frequency (RF) switch modeling technique for gallium nitride (GaN) RF switch transistors. Linear model extraction has primarily focused on common source (CS) RF transistors.
Dave Frey, Dashiel Matlock, Edward Gebara, Nicholas C. Miller   +3 more
wiley   +1 more source

Optimization Methodology of Multiple Air Hole Effects in Substrate Integrated Waveguide Applications [PDF]

Journal of the Korean Institute of Electromagnetic Engineering and Science, 2018
A wide spectrum of potential applications using substrate integrated waveguide (SIW) technologies in conjunction with air hole regions is introduced, and an efficient optimization methodology to cope with the multiple air hole effect in SIW applications ...
Jin-Yang Kim, Dong-Wan Chun, Christopher Jayun Ryu, Hai-Young Lee   +3 more
doaj   +1 more source

A Survey of Phase Shifters for Microwave Phased Array Systems

International Journal of Circuit Theory and Applications, Volume 53, Issue 6, Page 3719-3739, June 2025.
ABSTRACT Phased Array Systems (PASs) are extensively used in radar and telecommunication systems for diverse applications, including military surveillance and wireless broadband communication. Besides, they are becoming increasingly indispensable in modern applications such as multi‐function phased array radars for weather monitoring and aircraft ...
M. Kebe, M. C. E. Yagoub, R. E. Amaya
wiley   +1 more source

A Fully Planar Substrate Integrated Probe-Based Wideband Orthomode Transducer [PDF]

, 2018
This paper introduces a planar orthomode transducer (OMT) using substrate integrated waveguides (SIWs) and substrate integrated coaxial lines (SICLs) that is entirely contained within two substrate layers.
Budimir, D., Budimir, D., Jankovic, U., Jankovic, U.   +3 more
core   +1 more source

Pattern‐Reconfigurable Antenna Using Four‐Elements Planar Bended Dipole Array for 5G Beam‐Switching Applications

Engineering Reports, Volume 7, Issue 4, April 2025.
New 5G base stations require antennas capable of directing the beam to the mobile terminal. In this paper we propose an array of 4 dipoles reconfigurable in radiation pattern. The beam can switch in four directions by controlling the switch states implemented in the arms of each dipole.
Saber Dakhli, Jean‐Marie Floc'h, Ameni Mersani, Hatem Rmili   +3 more
wiley   +1 more source