The equivalent circuits are realized for the conical monopole antenna with split loops.
The geometry and dimensions of the conical monopole antenna for UWB are depicted in Figure 1.
As the length of the conical monopole antenna increases, the input impedance converges to the characteristic impedance of a spherical coaxial transmission line.
The dimensions of the conical monopole antenna are identical to the dimensions of Figure 1.
The transmission line in Figure 7 corresponds to the conical monopole antenna. Because the magnetic field of the antenna passes through the split loop, mutual inductance exists between the two components.
M that appeared in (6a) and (7) represents the mutual inductance between the conical monopole antenna and the split loop.
For the conical monopole antenna radiation efficiency on shred-CFRP is measured close to that of aluminum in the frequency range from 1 GHz to 10 GHz, about 0.5 dB lower at 5.9 GHz .
Radiation efficiency of a conical monopole antenna on a ground plane made from the proposed CFRP is close to 100%.
Caption: Figure 14: Conical monopole antenna on the shred-CFRP ground plane.
The proposed CFRP is measured as ground plane for a wire monopole antenna for the 5.9 GHz DSRC band and with broadband conical monopole antennas in a frequency range from 1 GHz to 10 GHz.
Broadband measurements of conical monopole antennas in Section 4.2 show that shred-CFRP is an excellent ground plane material with results close to aluminum.