Results 11 to 20 of about 984,557 (317)

Millimeter-Wave MMICs and Applications [PDF]

open access: yes, 2003
As device technology improves, interest in the millimeter-wave band grows. Wireless communication systems migrate to higher frequencies, millimeter-wave radars and passive sensors find new solid-state implementations that promise improved performance ...
Morgan, Matthew Alexander
core   +1 more source

Study of millimeter wave phase shift in 40 GHz hybrid mode locked lasers [PDF]

open access: yes, 2009
An investigation into using hybrid mode-locked lasers to implement millimeter wave phase shift is presented. The phase shift is measured directly using a vector network analyzer enabling straightforward characterization of such systems.
Cryan, MJ, Khawaja, BAM
core   +1 more source

Millimeter Wave Substrate Integrated Waveguide Antennas: Design and Fabrication Analysis [PDF]

open access: yes, 2009
The paper presents a new concept in antenna design, whereby a photo-imageable thick-film process is used to integrate a waveguide antenna within a multilayer structure. This has yielded a very compact, high performance antenna working at high millimeter-
Izqueirdo, B   +9 more
core   +1 more source

A High-Precision Hybrid Analog and Digital Beamforming Transceiver System for 5G Millimeter-Wave Communication

open access: yesIEEE Access, 2019
In this paper, the development of a millimeter-wave hybrid beamforming (HBF) transceiver system for 5G millimeter-wave multiple-input-multiple-output (MIMO) communication is presented.
Ruoqiao Zhang   +4 more
doaj   +1 more source

Dual-band beam steering THz antenna using active frequency selective surface based on graphene

open access: yesEPJ Applied Metamaterials, 2021
A dual-band independently beam steering THz antenna is presented, which is composed of a broadband omnidirectional monopole source antenna surrounded by six hexagonal active frequency selective surface (AFSS) screens with switchable filtering response in
Yang Yao-Jia   +3 more
doaj   +1 more source

Millimeter-wave compressive holography [PDF]

open access: yesApplied Optics, 2010
We describe an active millimeter-wave holographic imaging system that uses compressive measurements for three-dimensional (3D) tomographic object estimation. Our system records a two-dimensional (2D) digitized Gabor hologram by translating a single pixel incoherent receiver. Two approaches for compressive measurement are undertaken: nonlinear inversion
Cull, Christy Fernandez   +4 more
openaire   +2 more sources

Indoor Pico-Cellular Network Operation based on a Simple Optical Millimetre-Wave Generation Scheme [PDF]

open access: yes, 2010
Experimental demonstrations of modulated signal transmission and pico-cellular network operation at millimeter-wave frequencies, which are based on a simple technique for millimeter-wave generation using an optical phase modulator and optical filtering ...
Jeanne James   +14 more
core   +1 more source

Squeezing Millimeter Waves into Microns [PDF]

open access: yesPhysical Review Letters, 2004
Microstructured metallic devices will play a vital role in the continuing search to manipulate the passage of electromagnetic radiation relevant to optical, microwave, and communication technologies. Here, we investigate the electromagnetic response of a completely novel and ultrathin (
Hibbins, Alastair P.   +3 more
openaire   +3 more sources

Superheterodyne-inspired waveguide-integrated metasurfaces for flexible free-space light manipulation

open access: yesNanophotonics, 2022
Metasurfaces have attracted significant attention in recent years due to their unprecedented light-manipulation abilities. However, most metasurfaces so far have relied on external light excitation, prohibiting them from full on-chip integration ...
Wu Geng-Bo   +3 more
doaj   +1 more source

Millimeter-Wave Antennas for 5G [PDF]

open access: yes2018 11th Global Symposium on Millimeter Waves (GSMM), 2018
The fifth generation (5G) wireless communications systems have brought a growing need for various antennas, electrically small and large, low-gain and large-gain, also at millimeter wavelengths, and in many cases with beam steering or switching capability.
Zheng, Jianfang   +5 more
openaire   +2 more sources

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