1-Bit Reconfigurable Unit Cell for Ka-Band Transmitarrays

• Published in: IEEE antennas and wireless propagation letters Vol. 15; pp. 560 - 563
• Main Authors: Di Palma, Luca, Clemente, Antonio, Dussopt, Laurent, Sauleau, Ronan, Potier, Patrick, Pouliguen, Philippe
• Format: Journal Article
• Language: English
• Published: New York IEEE 2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: Antennas; Bandwidth; beam-steering; Beamforming; Computer Science; Design standards; Diodes; discrete lens; Electronics; Engineering Sciences; Frequency measurement; Insertion loss; Networking and Internet Architecture; P-i-n diodes; Patch antennas; Propagation losses; reconfigurable antenna; Scattering parameters; Simulation; transmitarray; Two phase; Unit cell; p-i-n diodes; reconfigurable antenna; slot-loaded patch antenna; beam-steering; discrete lens; Transmitting antennas; Ka-band transmitarrays; Frequency measurement; microstrip antenna arrays; standard waveguide simulator; Beamforming; transmitarray; phase resolution; Bandwidth; Insertion loss; Propagation losses; slot antenna arrays; Scattering parameters; linear polarized unit cell; Antennas
• ISSN: 1536-1225; 1548-5757
• DOI: 10.1109/LAWP.2015.2458179

This letter presents an electronically reconfigurable, linearly polarized unit cell for transmitarray applications in Ka-band. A 1-bit phase resolution (namely with two phase states 0 ° and 180 °) is obtained using two p-i-n diodes mounted on a slot-loaded patch antenna. The design, realization, and experimental characterization in a standard waveguide simulator are reported. The measured insertion losses only reach 1.09 and 1.29 dB for the two-phase states, respectively, with a 3-dB transmission bandwidth of about 11.2%.