Single-fed Dual Band UHF-GPS Helical Antenna

2006 ◽  
Author(s):  
SooLiam Ooi ◽  
BoonPing Koh
Keyword(s):  
Dual Band ◽  
Helical Antenna

scholarly journals Dual-Band Spiral Printed Quadrifilar Helical Antenna Miniaturized by Surface and Inner Dielectric Loading

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 30244-30251 ◽  
Author(s):  
Yunan Han ◽  
Haoliang Wang ◽  
Ziwei Wang ◽  
Yuchen Yao ◽  
Yingjie Feng ◽  
...  
Keyword(s):  
Dual Band ◽  
Helical Antenna ◽  
Dielectric Loading

Analysis of Dual-Band Helical Antenna for Diversity on Mobile Phones

2008 ◽  
Vol 50 (4) ◽  
pp. 417-434 ◽  
Author(s):  
A. Khaleghi ◽  
A. Azoulay ◽  
J.-C. Bolomey
Keyword(s):  
Mobile Phones ◽  
Dual Band ◽  
Helical Antenna

Dual-Band Circularly Polarized Helical Antenna for Satellite Buoy

2021 ◽  
Author(s):  
Wei-Zhi Xiao ◽  
Wei-Chen Cheng ◽  
Jwo-Shiun Sun ◽  
Guan-Yu Chen
Keyword(s):  
Dual Band ◽  
Helical Antenna ◽  
Circularly Polarized

Optimization of a Dual-Band Helical Antenna for TTC Applications at S Band

2012 ◽  
Vol 54 (4) ◽  
pp. 63-77 ◽  
Author(s):  
I. Gonzalez ◽  
J. Gomez ◽  
A. Tayebi ◽  
F. Catedra
Keyword(s):  
Dual Band ◽  
Helical Antenna

DNA sequence mapping in interphase and metaphase chromosomes by fluorescence in situ hybridization

1992 ◽  
Vol 50 (1) ◽  
pp. 496-497
Author(s):  
Barbara Trask ◽  
Susan Allen ◽  
Anne Bergmann ◽  
Mari Christensen ◽  
Anne Fertitta ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Dna Sequence ◽  
Dna Sequences ◽  
Dual Band ◽  
Nick Translation ◽  
Metaphase Chromosomes ◽  
Band Pass ◽  
Texas Red ◽  
Fluorescent Spot

Using fluorescence in situ hybridization (FISH), the positions of DNA sequences can be discretely marked with a fluorescent spot. The efficiency of marking DNA sequences of the size cloned in cosmids is 90-95%, and the fluorescent spots produced after FISH are ≈0.3 μm in diameter. Sites of two sequences can be distinguished using two-color FISH. Different reporter molecules, such as biotin or digoxigenin, are incorporated into DNA sequence probes by nick translation. These reporter molecules are labeled after hybridization with different fluorochromes, e.g., FITC and Texas Red. The development of dual band pass filters (Chromatechnology) allows these fluorochromes to be photographed simultaneously without registration shift.

Dual band hybrid vehicular telephone antenna

2002 ◽  
Vol 149 (1) ◽  
pp. 41-44 ◽  
Author(s):  
L. Economou ◽  
R.J. Langley
Keyword(s):  
Dual Band

Single-peak-regulation and wide-angle dual-band metamaterial absorber based on hollow-cross and solid-cross resonators

2020 ◽  
Vol 91 (3) ◽  
pp. 30901
Author(s):  
Yibo Tang ◽  
Longhui He ◽  
Jianming Xu ◽  
Hailang He ◽  
Yuhan Li ◽  
...  
Keyword(s):  
Transverse Electric ◽  
Surface Current ◽  
Dielectric Substrate ◽  
Transverse Magnetic ◽  
Metamaterial Absorber ◽  
Absorption Peak ◽  
Dual Band ◽  
Single Peak ◽  
Wide Angle ◽  
Surface Current Density

A dual-band microwave metamaterial absorber with single-peak regulation and wide-angle absorption has been proposed and illustrated. The designed metamaterial absorber is consisted of hollow-cross resonators, solid-cross resonators, dielectric substrate and metallic background plane. Strong absorption peak coefficients of 99.92% and 99.55% are achieved at 8.42 and 11.31 GHz, respectively, which is basically consistent with the experimental results. Surface current density and changing material properties are employed to illustrate the absorptive mechanism. More importantly, the proposed dual-band metamaterial absorber has the adjustable property of single absorption peak and could operate well at wide incidence angles for both transverse electric (TE) and transverse magnetic (TM) waves. Research results could provide and enrich instructive guidances for realizing a single-peak-regulation and wide-angle dual-band metamaterial absorber.

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