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- Title
Theoretical and Experimental Investigation of N-Bit Reconfigurable Retrodirective Metasurface.
- Authors
Hae-Bin Jung; Jeong-Hae Lee
- Abstract
The PIN diode-based N-bit reconfigurable retrodirective metasurface (N-bit RRDM) is a next-generation retro-reflector that offers the advantages of effective electronical control of the retro-reflection angle, low loss, and thin planar structure. However, since the unit cell of an N-bit RRDM is controlled by a quantized N-bit phase (360°/2N), it encounters operational errors, such as beam gain reduction and spurious beams. This can be a fatal disadvantage in military radar or satellite communication, which requires accurate beam tracking. This paper theoretically analyzes the operation of the N-bit RRDM by utilizing generalized Snell's law and array factor theory. The analysis results present the design criteria for an N-bit RRDM that eliminates issues related to beam gain reduction and spurious beam errors. Furthermore, to verify the theoretical analysis results, High-Frequency Structure Simulator (HFSS) full-wave simulation and experimentation are conducted using the 1-bit RRDM.
- Subjects
UNIT cell; PIN diodes; BEAM steering; RADAR; PERSONAL identification numbers; TELECOMMUNICATION satellites
- Publication
Journal of Electromagnetic Engineering & Science, 2024, Vol 24, Issue 1, p51
- ISSN
2671-7255
- Publication type
Article
- DOI
10.26866/jees.2024.1.r.204