Dual-band helical antenna
AssigneeQUALCOMM Incorporated
InventorsDaniel Filipovic, Ali Tassoudji, Stephen B. Tidwell
Life of this patent
Estimating the term…
Abstract
A dual-band helical antenna provides operation in two frequency bands. The dual-band helical antenna includes two single-band antennas, each having a feed network, a ground plane opposite the feed network, and a set of one or more radiators extending from feed network. According to one aspect of the invention, a tab extends from the feed network of one of the antennas which provides a feed for that antenna. The tab also provides a path for current to flow from the radiators of the second antenna along the axis of the second antenna to thereby increase the energy radiated in the directions perpendicular to the axis. According to another feature of the invention, the ground plane of one antenna is used as a shorting ring for the other antenna.
Claims25
A dual band helical antenna, comprising:
- a first antenna section comprising:
- a first feed network disposed on a first side of a substrate on a first feed portion of the first antenna,
- a first ground plane disposed on a second side of said substrate and opposite said feed network,
- a first set of one or more radiators disposed on said substrate and extending from said feed network, and
- a tab extending from said first feed portion of said first antenna section positioned substantially along the axis of the antenna;
- and
- a second antenna section comprising:
- a second feed network disposed on said substrate on a second feed portion,
- a second ground plane disposed on said substrate opposite said feed network, and
- a second set of one or more radiators disposed on said substrate and extending from said feed network.
A dual band helical antenna, comprising:
- a first antenna section comprising:
- a first feed network disposed on a first side of a substrate on a first feed portion of the first antenna,
- a first ground plane disposed on a second side of said substrate and opposite said feed network, and
- a first set of one or more radiators disposed on said substrate and extending from said feed network;
- a second antenna section comprising:
- a second feed network disposed on said substrate on a second feed portion,
- a second ground plane disposed on said substrate opposite said feed network;
- a second set of one or more radiators disposed on said substrate and extending from said feed network;
- and
- a tab extending from said first feed portion of said first antenna section and running along the axis of said second antenna section for feeding said first antenna section for providing a path for current to flow from said radiators of said second antenna section along the axis of said second antenna section to thereby increase the energy radiated in the directions perpendicular to the axis.
A dual-band communication device having a dual band helical antenna, comprising:
- a first antenna section comprising:
- a first feed network disposed on a first side of a substrate on a first feed portion of the first antenna section,
- a first ground plane disposed on a second side of said substrate and opposite said feed network, and
- a first set of one or more radiators disposed on said substrate and extending from said feed network;
- a second antenna section comprising:
- a second feed network disposed on said substrate on a second feed portion,
- a second ground plane disposed on said substrate opposite said feed network;
- a second set of one or more radiators disposed on said substrate and extending from said feed network;
- and
- a tab extending from said first feed portion of said first antenna section positioned substantially along the axis of the antenna for providing a path for current to flow from said radiators of said second antenna section along the axis of said second antenna section to thereby increase the energy radiated in the directions perpendicular to the axis.
Dependencies are inferred from the claim text.