Design and Development of a New Electrically Small 3D UHF Spherical Antenna with 360° of Opening Angle in the Whole Space for RFID, WSN, and RSN Applications

Table 8

Dimensions of each 3D spherical antenna (Figure 18) with the simulation results.

Antenna	1	2	3	4
(mm)	14	14	14	14
(mm)	80.94	80.14	79.34	78.54
(mm)	9.9	11.36	12.32	13.47
(mm)	4	4	4	4
(mm)	22.65	25.98	28.28	31.04
(mm)	3.23	3.23	3.23	3.23
(mm)	6	6	6	6
(dB)	−28.89	−42.38	−38.08	−23
fr (MHz)	915	915.2	915	915
(dB)	3.892	3.382	3.044	2.856
Opening angle (°)	<360	<360	<360	360