Research Article

Analysis of Circular Polarization of Cylindrically Bent Microstrip Antennas

Table 5

Semi phase center -coordinates when the antenna is bent on a 80 mm radius. The semi phase centers lie approximately at when the antenna is flat. Distance between semi phase centers is also expressed as phase shifting (degrees) at 1515 MHz.

Horizontal bendingVertical bending
Semi p. c. in horiz. planeSemi p. c. in vert. plane Semi p. c. in horiz. plane Semi p. c. invert. plane

Mode 1  mm  mm  mm  mm
Mode 2  mm  mm  mm  mm
Difference  mm  mm  mm  mm
Difference in phase