3results about How to "Lower quality factor" patented technology

This invention discloses a slot-based self-decoupling patch antenna, comprising a top metal structure, an upper dielectric substrate, a lower dielectric substrate, a metal ground layer, and a coaxial line. The self-decoupling patch antenna of this invention symmetrically embeds rectangular slots along the vertical axis of symmetry of a rectangular metal patch. It utilizes the change in current distribution caused by the rectangular slots of the excitation unit to construct the oblique current of the coupling unit. Combined with the expansion effect of the rectangular slots of the coupling unit on the weak electric field region, self-decoupling of the patch antenna is achieved. This solves the limitation problem of decoupling spacing in self-decoupling antenna structures, enabling conventional spacing array arrangement and decoupling, while also considering a relatively wide matching and decoupling bandwidth.

The invention discloses a stable wide-beam broadband end-on-fire antenna, which is characterized in that a pair of inclined Y-shaped metal structures and a pair of inverted L-shaped metal structures are symmetrically distributed on two sides of the front and the rear of a dipole in a face-to-face and back-to-back manner, and multi-current distribution and resonance of the inclined Y-shaped metal structures are utilized; the end-on-fire antenna for broadband E-plane beam broadening and broadband impedance matching is realized through the vertical current compensation of the inverted L-shaped metal structure and the reduction of quality factors, and the end-on-fire antenna has the characteristics of high beam broadening degree and good beam width consistency.

The invention discloses a broadband wide-beam mutual-coupling-removal dielectric resonance metasurface antenna which comprises a metasurface dielectric resonance antenna unit, a metal ground layer, a substrate layer and a bottom metal layer which are sequentially arranged from top to bottom. A plurality of metasurface dielectric resonant antenna units serve as radiators of the antenna and are arranged on the surface of the metal ground layer in a linear array mode. According to the invention, the metasurface dielectric resonant antenna unit is formed by combining the dielectric block units with different heights, a multi-unit array is formed, and the wide beam is realized by using the electric field component between the high and low dielectric block units; meanwhile, the bandwidth is expanded by reducing the quality factor through the high dielectric block unit, so that the antenna has the performance of wide bandwidth and wide beam; the coupling between the metasurface dielectric resonance antenna units is reduced through the low dielectric block units, so that the broadband and wide-beam mutual-coupling-free dielectric resonance metasurface antenna is realized.