Ultra-wideband notch antenna assembly that was modified to RF communications equipment

摘要

Abstract: A planar antenna assembly (AA) for an RF communication module, comprises i) a conductive plate having a first linear side of a first length and in which is defined a first notch (N 1 ) of a first width and a first electrical length, equal to a quarter of a wavelength corresponding to a chosen frequency of a working frequency band, and comprises a straight part having an open end (OE 1 ) found on the first side, and a shortened end (SE 1 ), and ii) a first feed line (FL 1 ) defined above the conductive plate and across the first notch (N 1 ) and arranged to be coupled to this first notch (N 1 ) to enable wideband operation. The first length of the first side is equal to half this wavelength. Moreover, the first notch open end (OE 1 ) is present approximately in the middle of the first side. Moreover, the first width of the first notch (N 1 ) is chosen such that the proportion of energy stored in the fields associated with the first notch (N 1 ) is low compared with the result of the chosen frequency times the power radiated from the currents propagating around the first notch.