Patent · US Active

Multiple band capacitively-loaded loop antenna

US7427965B2 · kind B2 · utility

5Cited by
17References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 13, 2007
Grant dateSep 23, 2008
Priority date
Expiry dateMay 18, 2027

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01Q9/26
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

A multiple band capacitively-loaded magnetic dipole antenna includes a plurality of magnetic dipole radiators connected to a transformer loop where the magnetic dipole radiators include at least one capacitively-loaded magnetic dipole radiator. The transformer loop has a balanced feed interface and includes a side that provides a transformer interface of quasi loops formed by the plurality of magnetic dipole radiators. Each quasi loop has a configuration and length to maximize antenna performance within a different frequency band. The at least one capacitively-loaded magnetic dipole radiator may be formed with a meander line structure and may include an electric field bridge such as a dielectric gap, lumped element, circuit board surface-mounted, ferroelectric tunable, or a microelectromechanical system (MEMS) capacitor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.