Monopole antenna

Engineering

MIMO

Materials science

Layer (electronics)

Telecommunications

Computer science

Antenna (radio)

Substrate (aquarium)

Geology

Beamforming

Oceanography

Physics

Optics

Sheet resistance

Composite material

Optoelectronics

Indium tin oxide

Electrical engineering

IEEE Transactions on Antennas and Propagation

A novel optically transparent multiple-input multiple-output (MIMO) antenna for automotive applications is presented in this article. The MIMO antenna consists of a two-semicircular slot-loaded monopole with a staircase ground structure. It is developed on a glass substrate with dimension 29×50 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . The fluorine-doped tin oxide and indium-doped tin oxide (ITO) are used as the conductive layers on the bottom and top of the substrate with sheet resistance 4 Ω/sq and 10 Ω/sq, respectively. The fabricated antenna has an optical transmittance greater than 72%; hence, it can be placed on the glass surface of the automotive. The measured results show that the proposed antenna exhibits a good impedance matching over a frequency of 2.4-11 GHz with isolation greater than 20 dB and a peak realized gain of 2 dBi, which is suitable for ultrawideband (UWB) automotive applications.

A Novel Optically Transparent UWB Antenna for Automotive MIMO Communications