Dual band single feed dipole antenna and method of making the same
The present invention provides a dual band single center feed dipole antenna by providing a conventional half-wave dipole antenna single band dipole antenna and loading the single band dipole antenna with two open circuit stubs or arms. The two open circuit stubs form a second half-wave dipole that resonates at a second frequency.
1 - 20 . Cancelled.
21 . A dual band antenna, comprising:
a substrate;
a first dipole antenna residing on the substrate;
the first dipole antenna having a first ground arm and a first live arm;
a second dipole antenna residing on the substrate;
the second dipole antenna having a second ground arm and a second live arm;
the second ground arm connected to the first ground arm; and
at least one power feed, the at least one power feed connected to the first live arm and the second live arm.
22 . The antenna according to claim 21 , wherein:
at least one of the first ground arm, the first live arm, the second ground arm, and second live arm comprises a trace, the trace comprises at least one of a straight trace, a meander-line trace, and a curved trace.
23 . The antenna according to claim 21 , wherein:
the at least one power feed comprises at least a first power feed connected to the first live arm and at least a second power feed connected to the second live arm.
24 . The antenna according to claim 21 , wherein:
the at least one power feed comprises only a first power fee connected to the first live arm, and further comprising a connection between the first live arm and the second live arm such that radio frequency power is supplied to the second live arm through the first live arm.
25 . The antenna according to claim 21 , further comprising:
a wireless device; and
the antenna being connected to the wireless device.
26 . The antenna according to claim 25 , wherein the wireless device comprises at least one of a cellular telephone, an electronic game, a PDA, a television, and a computer.
27 . The antenna according to claim 25 , wherein the antenna is connected to the wireless device using a cable.
28 . The antenna according to claim 25 , wherein the antenna is connected to the wireless device using a printed feed line.
29 . A dual band antenna, comprising:
a substrate;
means for radiating at a first frequency residing on the substrate;
means for radiating at a second frequency residing on the substrate; and
means for providing radio frequency power to the means for radiating at a first frequency and the means for radiating at a second frequency.
30 . The antenna according to claim 29 , wherein:
the means for radiating at a first frequency comprises a first ground arm and a first live arm.
31 . The antenna according to claim 30 , wherein:
the means for radiating at a second frequency comprises a second ground arm and a second live arm.
32 . The antenna according to claim 29 , wherein:
the means for providing radio frequency power comprises at least one of a cable feed and a microstrip feed.
33 . The antenna according to claim 31 , wherein the first ground arm, the second ground arm, the first live arm, and the second live arm comprise at least one of a straight trace, a meander-line trace, and a curved line trace.
34 . The antenna according to claim 29 , further comprising:
a wireless device; and
the antenna being connected to the wireless device.
35 . The antenna according to claim 34 , wherein the means for providing radio frequency power to the means for radiating at a second frequency comprises a power feed connected to the means for radiating at a first frequency and a connection between the means for radiating at a first frequency and the means for radiating at a second frequency.
37 . A method of making a dual band antenna, comprising the steps of:
providing a substrate;
selectively metallizing the substrate to form a first half-wave dipole antenna and a second half-wave dipole antenna, the selectively metallizing step at least comprising providing a metallic connection between the first half-wave dipole antenna and the second half-wave dipole antenna; and
connecting a power feed to the first antenna.
37 . The method according to claim 36 , wherein the substrate is provided by the steps of:
injection molding a first base layer using a non-platable plastic; and
injection molding a second base layer using a platable plastic.
38 . The method according to claim 36 , wherein the substrate is selectively metallized using at least one of an electroless process, an electrolytic process, a hot metal foil stamp process, and a metal embossing process.
39 . The method according to claim 37 , wherein the substrate is selectively metallized using at least one of an electroless process and an electrolytic process.
40 . The method according to claim 36 , wherein the substrate is selectively metallized by plating the substrate and etching the plating.