.At the UHF RFID band ( 920-925 MHz), the gain of
antenna is larger than 8.6 9 dBic for circular polarization over
the frequency 920 to 925 MHz as shown in Fig. 12. The
maximum gain for circular polarization is 8.72 dBic at 925
MHz. For linear polarization, the gain of antenna is larger than
8.6 7 dBi over the frequency 920 to 925 MHz. The maximum
gain for linear polarization is 8.68 dBi at 925 M