Results 81 to 90 of about 136,904 (200)

Broadband double-layered coplanar patch antennas with adjustable CPW feeding structure

, 2004
In this paper, we have presented the double-layered coplanar patch antennas of enhanced impedance bandwidth and adjustable conductor-backed coplanar waveguide feed lines.
Tong, K.F., Li, K., Matsui, T., Izutsu, M.   +3 more
core  

Measurement of antennas and microwave components using time-domain reflectometry of a voltage impulse

, 2011
Band-pass microwave systems such as ultra-wideband antennas are traditionally characterized in the frequency-domain through a vector network analyzer in an anechoic chamber.
Jonathan Scott, Scott, Jonathan B., Steven McCabe, McCabe, Steven Owen   +3 more
core   +1 more source

Additively Manufactured Perforated Superstrate to Improve Directive Radiation Characteristics of Electromagnetic Source

IEEE Access, 2019
Additively manufactured perforated superstrate (AMPS) is presented to realize directive radio frequency (RF) front-end antennas. The superstrate comprises spatially distributed dielectric unit-cell elements with square perforations, which creates a pre ...
Touseef Hayat, Muhammad U. Afzal, Ali Lalbakhsh, Karu P. Esselle   +3 more
doaj   +1 more source

Parallel-Interference-Cancellation-Assisted Decision-Directed Channel Estimation for OFDM Systems using Multiple Transmit Antennas

, 2005
The number of transmit antennas that can be employed in the context of least-squares (LS) channel estimation contrived for orthogonal frequency division multiplexing (OFDM) systems employing multiple transmit antennas is limited by the ratio of the ...
M. Munster, Munster, M., L. Hanzo, Hanzo, L.   +3 more
core   +1 more source

Dual-Polarized Magneto-Electric Dipole for 5G 28-GHz Phased Array Applications

IEEE Open Journal of Antennas and Propagation
A low-profile dual-polarized magneto electric (ME) dipole antenna configuration implemented on standard multilayer PCB technology is here reported. The proposed radiator is conceived for dual-polarized 28 GHz 5G phased array applications.
Giuseppe Scalise, Emilio Arnieri, Giandomenico Amendola, Mohadig W. Rousstia, Sergio Pires, Luigi Boccia   +5 more
doaj   +1 more source

A 77 GHz Transmit Array for In-Package Automotive Radar Applications

Telecom
A packaged transmit array (TA) antenna is designed for automotive radar applications operating at 77 GHz. The compact dimensions of the proposed configuration make it compatible with standard quad flat no-lead package (QFN) technology.
Francesco Greco, Emilio Arnieri, Giandomenico Amendola, Raffaele De Marco, Luigi Boccia   +4 more
doaj   +1 more source

A Design of a Small-Aperture Low-Profile Omnidirectional Conformal Antenna

Micromachines
In this article, a small-aperture, low-profile, and omnidirectional conformal antenna is proposed which can be utilized on space-limited equipment platforms such as airplanes, ships, and vehicles.
Jieying Bai, Xi Li, Ziyu Zhang, Junjun Wu, Lin Yang   +4 more
doaj   +1 more source

Antenna resistance [PDF]

Journal of the Franklin Institute, 1913
n ...
openaire   +2 more sources

Fundamentals of Antennas and Antenna Arrays

Abstract In many modern radar applications in the millimeter wave range, the radar must determine not only the range and velocity of a target, but also its angle at which it is located in relation to the radar. For this purpose, antenna arrays are required, i.e. a group of antennas.
Christian Waldschmidt, Christina Bonfert, Timo Grebner   +2 more
openaire   +1 more source

Reciprocal and non-reciprocal signal manipulation through horn antennas loaded with metamaterial-inspired particles

, 2015
In this contribution, we report our results about the design of metamaterial-inspired particles that can be integrated directly inside horn antennas to perform reciprocal and nonreciprocal manipulation of the received/transmitted signals.
Sounas, D. L., RAMACCIA, DAVIDE, BILOTTI, FILIBERTO, BARBUTO, MIRKO, ALU', Andrea, TOSCANO, ALESSANDRO   +5 more
core   +1 more source