English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Recent years have witnessed an extraordinary spurt in attention toward thewave manipulating strategies revealed by coding metasurfaces as they build up abridge between the physical and digital worlds. Newly, it has been shown thatwhen two different coding patterns responsible for doing separate missions areadded together based on the superposition theorem, the mixed coding patternwill perform both missions at the same time. In this paper, via asemi-analytical procedure, we demonstrate that such a theorem is notnecessarily valid for all possible functionalities with considering phase-onlycoding distributions and ignoring the element pattern function. By revisitingthe addition theorem, we introduce the concept of asymmetric spatial powerdivider (ASPD) with arbitrary power ratio levels in which modulating bothamplitude and phase of the meta-atoms is inevitable to fully control the powerintensity pattern of the metasurface. Numerical simulations illustrate that theproposed ASPD driven by proper coding sequences can directly generate a desirednumber of beams with pre-determined orientations and power budgets. Thephase/amplitude-encoded Pancharatnam-Berry meta-atoms realize the requiredcoding pattern in each case and good conformity between simulations andtheoretical predictions verifies the presented formalism. This work exposes anew opportunity to implement spatial power dividers for various applicationssuch as multiple-target radar systems, beamforming networks, and multiple-inputmultiple-output (MIMO) communication.

Addition Theorem Revisiting for Phase/Amplitude-Encoded Metasurfaces: Asymmetric Spatial Power Dividers