Unit-Cell loaded with PIN diodes for 1-bit Linearly Polarized Reconfigurable Transmitarrays
Résumé
In this letter, a reconfigurable unit-cell for transmitarray antenna working at X-band is presented. It is designed to provide 1-bit phase quantization using p-i-n diodes. The unit-cell is based on multi-layer frequency selective surfaces with the use of two substrates and a combination of a C-patch and a ring slot loaded by a rectangular gap. It is optimized using full-wave electromagnetic simulation and verified by using waveguide simulator. The experimental results show that the unit-cell provides two values of transmission phase with a step of 180° at 11.5 GHz. Furthermore, the unit-cell has a low thickness of 0.19 lambda 0 , and is low-cost and easy to fabricate.
Mots clés
- reconfigurable transmitarray antenna
- word length 1 bit
- frequency 11.5 GHz
- waveguide simulator
- full-wave electromagnetic simulation
- rectangular gap
- phase quantization
- Transmitarray antenna
- Phased arrays
- antenna radiation patterns
- electromagnetic wave polarisation
- frequency selective surfaces
- microwave antenna arrays
- slot antenna arrays
- unit-cell loaded
- reconfigurable unit-cell
- multilayer frequency selective surfaces
- flat lens antenna
- ring slot
- C-patch
- linearly polarized reconfigurable transmitarrays
- Propagation losses
- Varactors
- Substrates
- Switches
- P-i-n diodes