High-Gain Low-Profile Platform-Embedded Endfire CPW-CTS Antenna Array

A high-gain low-profile embedded coplanar waveguide continuous transverse stub (CPW-CTS) antenna array is presented. The antenna is platform embedded to limit its effect on drag for high-speed applications such as on aircrafts. The depth of the antenna is less than 1/36 of a wavelength and is cavity backed. The endfire gain is 13.2 dBi, compared with endfire gains of 11.8 dBi reported in [3] and approx. 10 dBi reported in [6]. It has -1 dB and -3 dB endfire gain bandwidths of 6.3% and 11.0%, respectively. A -3 dB bandwidth of 8.4% was reported in [3]. The impedance bandwidth is 14.3%.