Multi-Beam Leaky-Wave Antenna: Design, Analysis, and Experiments

Woo-Young, Park; Lim, Sungjoon

doi:10.1080/02726343.2011.568918

Cited by 6 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, a code book technique can be applied to simultaneous multi-beam radiators to achieve faster initial access times [47]. Some methods were also used to achieve common source multibeam LWAs, such as dual-mode transmission line [48], defected ground structure (DGS) [49] and aperture coupled feeding [50]- [51]. However, applying all these methodologies [48]- [51] to a DPA for achieving a multi-beam operation is challenging, and to the authors' best knowledge, do not yet exist in literature.…”

Section: Introductionmentioning

confidence: 99%

A Monolayer Dually Polarized High-Order Space Harmonic Leaky-Wave SIW Antennas With Fixed and Scanning Beam Capability

Rahimi

Sharawi

2022

IEEE Open J. Antennas Propag.

View full text Add to dashboard Cite

In this work, the concept of high-order space harmonics (HSHs) applied to a hybrid form of nonradiative dielectric (NRD) waveguide and substrate-integrated square waveguide (SIW) involving both TE10 and TE01 modes is investigated with aim to develop multi-functional dually polarized leaky-wave antennas (DP-LWAs). A polarization-selective coupling (PSC) mechanism is used to guide the two orthogonally oriented modes in the hybrid structure to achieve a polarization diversity feature. The polarization effect on unit-cell geometrical structures is examined for different characteristics of LWA such as propagation constant behavior, leakage ratio, and scanning range variation. In addition, we demonstrate how the extrinsic characteristics of HSHs in a one-dimensional periodic LWA and its unit-cell analysis can provide design flexibility through two case studies. In the first case of demonstration, we show a dually polarized multi-beam LWA design with wide scanning capability in which we use both even and odd HSHs of n ϵ [-1, -2]). The second antenna design case is concerned with a DP-LWA having the capability of fixed and scanning beams operation by using a combinatory set of PSC and four HSHs of n ϵ [-1, -2, -3, -4]. Two DP-LWA prototypes are demonstrated as proofs of concept, and the obtained experimental results show a very good agreement with their simulation and analysis counterparts.INDEX TERMS One-dimensional periodic leaky-wave antenna (1D-periodic LWA), Higher-order space harmonics (HSHs), Polarization-selective coupler (PSC), Nonradiative dielectric (NRD) waveguide, Substrate integrated waveguide (SIW), Dually polarized antenna (DPA).

show abstract