Cloaked low band elements for multiband radiating arrays
AssigneeOutdoor Wireless Networks LLC
InventorsOzgur ISIK, Philip Raymond GRIPO, Dushmantha Nuwan Prasanna THALAKOTUNA, Peter J. LIVERSIDGE
Life of this patent
Estimating the term…
Abstract
A multiband antenna, having a reflector, and a first array of first radiating elements having a first operational frequency band, the first radiating elements being a plurality of dipole arms, each dipole arm including a plurality of conductive segments coupled in series by a plurality of inductive elements; and a second array of second radiating elements having a second operational frequency band, wherein the plurality of conductive segments each have a length less than one-half wavelength at the second operational frequency band.
Claims17
A multi-band base station antenna, comprising:
- a reflector;
- a first array of first frequency band cross-dipole radiating elements that extend forwardly from the reflector;
- and
- a second array of second frequency band cross-dipole radiating elements that extend forwardly from the reflector, where the lowest frequency in the second frequency band exceeds the highest frequency in the first frequency band;
- and
- wherein each first frequency band cross-dipole radiating element comprises a plurality of dipole arms, and each dipole arm comprises a plurality of parallel inductor-capacitor (“LC”) circuits that are configured to attenuate induced currents in the second frequency band.
A multi-band base station antenna, comprising:
- a reflector;
- a first array of first frequency band cross-dipole radiating elements that extend forwardly from the reflector;
- and
- a second array of second frequency band cross-dipole radiating elements that extend forwardly from the reflector, where the lowest frequency in the second frequency band exceeds the highest frequency in the first frequency band,
- wherein each first frequency band cross-dipole radiating element comprises a plurality of dipole arms, and each dipole arm comprises at least two conductive segments and at least two meandered metal traces.
A multi-band base station antenna, comprising:
- a reflector;
- a first array of first frequency band cross-dipole radiating elements that extend forwardly from the reflector;
- and
- a second array of second frequency band cross-dipole radiating elements that extend forwardly from the reflector, where the lowest frequency in the second frequency band exceeds the highest frequency in the first frequency band,
- wherein each first frequency band cross-dipole radiating element comprises a plurality of dipole arms, and a first of the dipole arms comprises a first meandered metal track and a second meandered metal track that are electrically coupled in series through a non-meandered conductive element.
Dependencies are inferred from the claim text.