Development of a Semielliptical Partial Ground Plane Antenna for RFID and GSM-900

Table 1

Design specification of the antenna.

Dimension	Value (mm)
Patch ellipse major radius, 𝑎	30
Patch ellipse minor radius, 𝑏	20
Ground ellipse major radius, 𝑎^′	30
Ground ellipse minor radius, 𝑏^′	20
Feed-line width, 𝑐	8
Semicircle radius, 𝑅	9
Ground plane width, 𝑒	45
Ground plane length, 𝑓	100
Antenna length, 𝑝	100
Antenna width, 𝑞	80