Antenna measurement

Radiation

Standing wave ratio

Vivaldi antenna

Mathematics

Effective radiated power

Computer science

Optics

Antenna (radio)

Acoustics

Telecommunications

Radiation pattern

Antenna efficiency

Directivity

Geometry

Antipodal point

Antenna gain

Microstrip antenna

Materials science

Physics

Beamwidth

Bandwidth (computing)

IEEE Transactions on Antennas and Propagation

Novel methods of improving directivity and decreasing sidelobe radiation via the addition of an elliptical pseudoelement and irregularly spaced notches in the tapered slot antenna are presented in this paper. This antenna has been shown to be functional over the C, X, Ku, K, Ka, and portions of the Sand V-bands covering (2.5 to 57) GHz (22.8:1 bandwidth, defined where VSWR <; 3). Minimum and maximum realized gains of 4 and 16 dB were achieved at 2.7 GHz and 29.8 GHz, respectively. The antenna offers directive radiation patterns with a half-power beamwidth under 40° for frequencies above 6 GHz and under 30° for frequencies above 32 GHz. As compared with other Vivaldi antennas reported in the past, the proposed design offers a larger bandwidth while providing higher peak gain and average gain. Good agreement was observed between simulation and measurements.

High-Gain Antipodal Vivaldi Antenna With Pseudoelement and Notched Tapered Slot Operating at (2.5 to 57) GHz