Design of a Microstrip Patch Antenna Array for Airborne SAR Applications

Design and Development of a Dual Operating Mode Microstrip Patch Antenna for Unmanned Aerial Vehicle Synthetic Aperture Radar

“…It might result in inaccuracy of the SAR image and the solution to overcome this issue is to suppress the antenna sidelobe [8]. Figure 2 shows an example of left right ambiguity where the unwanted target located at the left side of the UAV might introduce error to the output of the SAR sensor.…”

Circularly Polarized Microstrip Antennas with Proximity Coupled Feed for Circularly Polarized Synthetic Aperture Radar

“…A better control of the beam shape and position in space can be achieved by correctly arranging the elements along a rectangular grid to form a planar array. The beam pattern for optimum ground mapping function is cosecant-squared beam in the elevation plane (E-plane) which can correct the range gain variation and pencil beam in the azimuth plane (H-plane) (Vetharatnam et al, 2006). The antenna side lobe levels in the azimuth plane must be suppressed in order to avoid the azimuth ambiguity.…”

Equilateral Triangular Microstrip Antenna for Circularly-Polarized Synthetic Aperture Radar

“…1 for illustration). The planar array configuration is widely employed in radar systems where a narrow pencil beam is needed [9]. A better control of the beam shape and position in space can be achieved by correctly arranging the elements along a rectangular grid to form a planar array.…”

“…A better control of the beam shape and position in space can be achieved by correctly arranging the elements along a rectangular grid to form a planar array. The beam pattern for optimum ground mapping function is cosecant-squared beam in the elevation plane (E-plane) which can correct the range gain variation and pencil beam in the azimuth plane (H-plane) [9]. The antenna side lobe levels in the azimuth plane must be suppressed in order to avoid the azimuth ambiguity.…”