Radiating Elements for Shared Aperture Tx/Rx Phased Arrays at K/Ka Band

An Integrated Radar Tile for Digital Beamforming X-/Ka-Band Synthetic Aperture Radar Instruments

“…One of the most critical components in the design of the RF board tile is the vertical transition between antennas and chips which are placed on the opposite sides of the stack-up. To avoid high insertion losses, these interconnections were realized using a quasi-coaxial configuration [14], [15] where a central signal via is surrounded by a number of ground vias (see image inside Fig. 4).…”

A Ring-Focus Antenna with Splash Plate in Ka-Band

“…In a dielectric material, the optical length that an electromagnetic wave radiates from primary feed O s and refract to the air after being reflected by subreflector to the main reflector's focus is equal. Namely, When θ s is certain, θ m , θ n , f s , f m , and f n can be solved according to (11), (21), (23), (25), and (28).…”

“…The antenna designers always pursue high gain while using low sidelobes for the design of Ka-band antenna [17][18][19][20][21][22][23][24][25][26][27].…”

Broadband cloverleaf Vivaldi antenna with beam tilt characteristics

“…Enhancing the capacity of the wireless communication systems has been the main challenge for the current mobile networks where high data rates, lower power consumption, and excessive connectivity are expected to be met . To tackle the issue, methods on enhancing the capacity of the wireless communication channel by exploiting pattern diversity adopting multiple radiators, phase shifting, beam former, and butler matrix techniques have been adopted for single elements and array configurations …”

“…[1][2][3] To tackle the issue, methods on enhancing the capacity of the wireless communication channel by exploiting pattern diversity adopting multiple radiators, phase shifting, beam former, and butler matrix techniques have been adopted for single elements and array configurations. [4][5][6][7][8][9][10][11][12] Among the aforementioned techniques, some drawbacks of the aforementioned techniques that limits their utilization in beam tilt application, include the beam former and butler matrix are restrained to narrow band, while phase shifting is limited to angle tilt. However, the additional radiators on a single element combined with adequate switching are widely used since a wide range can be covered and not constrained in beam tilt angle.…”