Results 61 to 70 of about 435 (182)

Reflectarray Antenna for Simultaneous Near-Field Fronthaul and Far-Field Backhaul Links in Next 5G FR2 Femtocells

IEEE Open Journal of Antennas and Propagation
This work presents a reflectarray-based base station antenna to integrate both backhaul (BH) and fronthaul (FH). The reflectarray operates at 28 GHz in dual linear polarization, using one polarization for the BH and another for the FH. The BH is a pencil
Alvaro F. Vaquero, Borja Imaz-Lueje, Marcos R. Pino, Manuel Arrebola   +3 more
doaj   +1 more source

Design of a Broadband Reconfigurable Transmitarray and Evaluation of Its Radiation and Scattering Characteristics Using an EM‐Acquired CRCS‐Based Link Gain Model

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This paper presents a broadband 1‐bit reconfigurable transmitarray operating at 11.7 GHz, using interdigital structures to achieve a 23.1% 3‐dB transmission‐loss bandwidth without requiring an air gap. An EM‐acquired CRCS‐based link gain model is developed to evaluate the radiation gain, scattering characteristics and gain‐frequency response of the RTA.
Ting‐Hao Shih, Shih‐Cheng Lin, Dai‐Ting Tsai   +2 more
wiley   +1 more source

An Artificial Magnetic Conductor‐Backed Logarithmic Spiral Antenna for CubeSat Relay Downlink Networks

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This work presents a compact AMC‐backed logarithmic spiral antenna for CubeSat relay downlink communications, achieving wide impedance bandwidth from 5.1 to 16 GHz and stable circular polarization with a 48.64% axial‐ratio bandwidth. The integration of an artificial magnetic conductor enhances radiation efficiency and enables a measured peak gain of 9 ...
Talha Shahid Alvi, Faizan Ramzan, Muhammad Ali, Muhammad Ahsan Rafiq, Affan Inam, Muhammad Qasim Mehmood, Shahid Mumtaz, Muhammad Zubair   +7 more
wiley   +1 more source

Millimeter Wave Beam Steering Reflectarray Antenna Based on Mechanical Rotation of Array

IEEE Access, 2019
This work provides design and analysis of a beam steering reflectarray antenna, designed at 26 GHz, based on the mechanical rotation of the array. Unit cells based on circular ring elements are designed, and scattering parameter measurements have been ...
Muhammad Inam Abbasi, Muhammad Hashim Dahri, Mohd Haizal Jamaluddin, Norhudah Seman, Muhammad Ramlee Kamarudin, Noor Hafizah Sulaiman   +5 more
doaj   +1 more source

Stretchable-Substrate-Impregnated Fabric: Deployable Reflectarray Antennas for CubeSats

IEEE Access
This paper proposes a stretchable-substrate-impregnated fabric for deployable high-gain antenna for small satellites. Constellations of small satellites offer worldwide coverage of wireless communication and earth observation; high-gain antennas are ...
Masato Machida, Takashi Tomura, Hiraku Sakamoto, Tomohiro Fukao   +3 more
doaj   +1 more source

Bandwidth Behavior of Closely Spaced Aperture-Coupled Reflectarrays

International Journal of Antennas and Propagation, 2012
The bandwidth features of reflectarray antennas are analyzed by examining in detail the phase errors due to the compensation mechanism for spatial phase delays.
F. Venneri, S. Costanzo, G. Di Massa
doaj   +1 more source

Reflectarray antennas for terahertz communications

, 2012
Reflectarrays composed of resonant microstrip gold patches on a dielectric substrate are demonstrated for operation at terahertz frequencies. Based on the relation between the patch size and the reflection phase, a progressive phase distribution is implemented on the patch array to create a reflector able to deflect an incident beam towards a ...
Niu, Tiaoming, Withayachumnankul, Withawat, Ung, Benjamin S. -Y., Menekse, Hakan, Bhaskaran, Madhu, Sriram, Sharath, Fumeaux, Christophe   +6 more
openaire   +2 more sources

PhaseNet: A Deep Learning Framework for Reflectarray Antenna Gain Prediction by Integrating 2D Phase Maps and Angular Embeddings

Mathematics
Reflectarray antenna design traditionally depends on computationally intensive full-wave simulations and experimental measurements, which significantly increase design time and cost.
Seoyeon Oh, Seongmin Pyo, Haneol Jang
doaj   +1 more source

Resonant Elements for Tunable Reflectarray Antenna Design

International Journal of Antennas and Propagation, 2012
This paper presents an accurate analysis of different configurations of reflectarray resonant elements that can be used for the design of passive and tunable reflectarrays.
M. Y. Ismail, M. Inam
doaj   +1 more source

Beam-Scanning Reflectarray Based on a Single Varactor-Tuned Element

International Journal of Antennas and Propagation, 2012
A single varactor-tuned element is investigated as effective solution for the realization of reconfigurable reflectarray antennas. The proposed configuration is successfully implemented for the design of an X-band reflectarray prototype of 3×15 radiators.
F. Venneri, S. Costanzo, G. Di Massa, E. Marozzo, A. Borgia, P. Corsonello, M. Salzano   +6 more
doaj   +1 more source