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Recent advances in micromachining have enabled the development of wideband millimeter-wave antennas with integrated beamformers presented in this paper. A combination of two radiators, both having consistent radiation patterns, is used to cover K-through W-band frequencies. Two planar log-periodic antennas are monolithically integrated with respective multi-stage micro-coaxial impedance transformers...
Full-wave modeling and measurements are utilized to propose three band rejection techniques integrated with a multi- octave wideband planar log-periodic antenna. Antennas presented in this paper are designed to operate between 1.8 and 11 GHz with rejection at 6 GHz. Demonstrated band-rejection techniques include the removal of resonant teeth also referred to as aperture rejection, integration of a...
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