Mathematics education

Engineering

Bit (key)

Fabrication

Bandwidth (computing)

Materials science

Aperture (computer memory)

Telecommunications

Computer science

Antenna (radio)

Acoustics

Reconfigurable antenna

Directional antenna

Computer network

Physical chemistry

Polarization (electrochemistry)

Alternative medicine

Coaxial antenna

Linear polarization

Laser

Physics

Ka band

Mathematics

Optics

Unit (ring theory)

Medicine

Microstrip antenna

Chemistry

Optoelectronics

Electrical engineering

Pathology

IEEE Transactions on Antennas and Propagation

This communication presents the design, optimization, fabrication, and characterization of an electronically steerable transmitarray (TA) with 2 bits of phase quantization per unit cell. The proposed TA operates in linear polarization at Ka-band and is composed of 14 × 14 reconfigurable unit-cells. Four p-i-n diodes are integrated on each unit-cell to control the radiated field phase distribution across the TA aperture. The prototype demonstrates experimentally pencil beam scanning over a 120° × 120° window, a maximum gain at broadside of 19.8 dBi, and a 3 dB fractional bandwidth of 16.2%.

2 Bit Reconfigurable Unit-Cell and Electronically Steerable Transmitarray at $Ka$ -Band