Due to the realization of growing demand for larger bandwidth, high
capacity RF and microwave devices as well as better efficiency in the field of
wireless technologies new technologies of designing such devices are being
reported all over the world.
Figure 3.16: 1D circular pattered EBGS etched beneath the T-line designed by Zeland ie3d software.
On the consequence of such latest technologies
realizing microwave filters and antennas with Planar Electromagnetic Bandgap
Structures are one
of the best of them. Figure 3.16: 1D circular pattered EBGS etched beneath the T-line designed by Zeland ie3d software.
Using Electromagnetic Bandgap Structures (EBGS) is a new technology to improve the performances of existing RF active and passive devices. The technological design is very simple then any other devices – it is just made upon a dielectric substrate with copper coating on both sides. By etching these copper coating: Transmission line (T-line) on the upper side and EBGS on the ground plan are made (a typical design is shown in figure - a); which shows the performance like stopband, passband and LPF filters (figure – b is a result of a typical design).
Figure 3.17: S-parameter performance
of 1D circular pattered EBGS simulated by Zeland ie3d software showing stopband
performance.
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