Results 101 to 110 of about 42,931 (308)
Multifrequency broadband polarized horn antenna [PDF]
, 1981 A corrugated conical horn antenna is simultaneously fed a multiplicity of signals, two for each of five frequencies, with each of a pair of signals fed in each of two orthogonal planes for excitation of a desired spherical hybrid mode.
Green, K. A.
core +1 more source
Osteohistology of two phorusrhacids reveals uninterrupted growth strategy
The Anatomical Record, EarlyView.Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer +2 more
wiley +1 more source
Guided-wave manipulation in SIW H-plane horn antenna by combining phase correction and holographic-based leakage. [PDF]
Sci Rep, 2022 Araghi A +4 more
europepmc +1 more source
Cosecant-beam horn array antenna.
The Journal of the Institute of Television Engineers of Japan, 1988 幾何光学に基づいて設計したE面コセカントビームホーンを素子アンテナとして用いた1次配列アレイアンテナを構成し, このアレイ化によって, サービスエリア内の電力分布の差はほぼ±3dB以内におさえた.またサービスエリア外では, サービスエリアの辺縁部から約-3dB/1°方位角の割合で電力が弱まっていくなどの特性を持つ, 質の良いSHF小規模放送用コセカントビームアレイアンテナを実験で確認した.本論文は, このアレイアンテナの設計法, 指向性計算および試作したアンテナの実験結果について述べる.
Waichi Nakada +4 more
openaire +2 more sources
Anatomical Sciences Education, EarlyView.Abstract Teaching white matter (WM) anatomy to undergraduates is challenging. This is partly because WM fibers are oriented intricately and Klingler's dissection, the gold standard method used to demonstrate it, often requires time, advanced anatomical knowledge, and refined dissection skills.
Doris George Yohannan +7 more
wiley +1 more source
A Rectangular Planar Spiral Antenna for GIS Partial Discharge Detection
International Journal of Antennas and Propagation, 2014 A rectangular planar spiral antenna sensor was designed for detecting the partial discharge in gas insulation substations (GIS). It can expediently receive electromagnetic waves leaked from basin-type insulators and can effectively suppress low frequency
Xiaoxing Zhang +3 more
doaj +1 more source
H-plane horn antenna with enhanced directivity using conformal transformation optics. [PDF]
Sci Rep, 2021 Eskandari H +4 more
europepmc +1 more source
Optimizing the G/T ratio of the DSS-13 34-meter beam-waveguide antenna [PDF]
, 1992 Calculations using Physical Optics computer software were done to optimize the gain-to-noise-temperature (G/T) ratio of Deep Space Station (DSS)-13, the Deep Space Network's (DSN's) 34-m beam-waveguide antenna, at X-band for operation with the ultra-low ...
Esquivel, M. S.
core +1 more source
Molecular bases of insect odorant receptor function: specificity and evolution
Biological Reviews, EarlyView.ABSTRACT Insect odorant receptors (ORs) are a class of chemoreceptors that insects use to detect volatile cues in their environment. In recent years, major advances in the field of structural biology have made it possible to obtain the first structures of insect ORs.
Zibo Li +5 more
wiley +1 more source
A Directional Antenna in a Matching Liquid for Microwave Radar Imaging
International Journal of Antennas and Propagation, 2015 The detailed design equations and antenna parameters for a directional antenna for breast imaging are presented in this paper. The antenna was designed so that it could be immersed in canola oil to achieve efficient coupling of the electromagnetic energy
Saeed I. Latif +5 more
doaj +1 more source