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Circularly Polarized Equalizer Networks

IEEE Transactions on Microwave Theory and Techniques, 1974
Characteristics of the cross slot coupling aperture applicable to circularly polarized equalizer networks is presented. This coupling mechanism is analyzed and experimental results indicate good agreement between theory and practice. Extension of the single-cavity unit to multiple direct-coupled dual-mode equalizer networks is also discussed.
R.D. Wanselow, D.A. Taggart
openaire   +1 more source

Circularly polarized luminescent porous crystalline nanomaterials

Nanoscale, 2022
An overview of generation, regulation and amplification of circularly polarized luminescence (CPL) in porous crystalline nanomaterials by direct synthesis, chirality induction or adaption, and symmetry breaking pathways.
Anyi Zheng   +4 more
openaire   +2 more sources

Circularly Polarized Light‐Driven Supramolecular Chirality

Macromolecular Rapid Communications, 2021
AbstractIntroduction of asymmetry into a supramolecular system via external chiral stimuli can contribute to the understanding of the intriguing homochirality found in nature. Circularly polarized light (CPL) is regarded as a chiral physical force with right‐ or left‐handedness.
Jun Su Kang   +4 more
openaire   +3 more sources

Semitransparent Circularly Polarized Phosphorescent Organic Light‐Emitting Diodes with External Quantum Efficiency over 30% and Dissymmetry Factor Close to 10−2

Advanced Functional Materials, 2021
To concurrently realize large electroluminescence dissymmetry factor and high device efficiency remains a formidable challenge in the development of circularly polarized organic light‐emitting diode (CP‐OLED). In this work, by introducing a famous chiral
Guangzhao Lu   +6 more
semanticscholar   +1 more source

Circularly polarized array antenna

2006 IEEE Antennas and Propagation Society International Symposium, 2006
In this paper, three circularly polarized arrays were studied. These arrays employ the SFHF element and are shown at a higher frequency range around 11.6 GHz. Each array is composed of elements which inherently have the effect of rotation in phase and in position.
null The Nan Chang, null Ko Han Lu
openaire   +1 more source

Circularly-polarized biconical horns

IRE Transactions on Antennas and Propagation, 1956
A new technique is described for obtaining circular polarization from a biconical horn. This polarization is obtained through use of a spatial array of thin conducting elements between the cone faces; orientation of the elements varies with distance from the feed. The method has been used successfully at S band and X band. This technique was applied to
C. Goatley, F. Green
openaire   +1 more source

Circularly Polarization Loop Antenna

2018 Asia-Pacific Microwave Conference (APMC), 2018
The design and measurements of a wide-band patch antenna with circular polarization are presented. For the proposed antenna, an L-shaped probe is utilized to feed the patch antenna which has square ring and a trapezoid stub. The antenna utilizes a single feed port to realize the right-handed circularly polarized (RHCP) radiation of the dual band of ...
Wenting Wu, Cun Wang, Qi Zhu
openaire   +1 more source

Omnidirectional circularly-polarized antennas

IRE International Convention Record, 2005
A general technique has been developed for achieving a circularly polarized antenna with omnidirectional azimuth coverage. The technique permits the immediate design of such an antenna with a great variety of possible vertical coverage patterns. The problem of satisfying any desired vertical coverage has been attacked by postulating three basic types-a
K. Kelleher, C. Morrow
openaire   +1 more source

Circularly Polarized Wearable Antennas

2014
By employing circularly polarized antennas, it is possible to prevent polarization mismatch losses which in turn increases the connection reliability between communication devices. This chapter focuses on circularly polarized wearable antennas.
Emmi Kaivanto   +2 more
openaire   +1 more source

Quantifying the overall efficiency of circularly polarized emitters.

Chemistry, 2020
An increasing number of circularly polarized luminescence (CPL) molecular emitters has been developed in the recent years and many of them are intended for applications in which high overall CPL efficiencies are requested.
L. Arrico, L. di Bari, Francesco Zinna
semanticscholar   +1 more source

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