On radiator slot fed antenna
AssigneeMolex Incorporated
InventorsOle Jagielski, Simon Svendsen, Finn Hausager, Morten Christensen
Life of this patent
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Abstract
An antenna includes a slot feed on the radiator itself (On Radiator Slot Fed Antenna or ORSFA) instead of the slot feed being a separate element. One of the advantages of having the slot feed integrated onto the radiator is that the antenna is less dependent on the adjacent conductive parts, since the feed is coupling to the radiator rather than to ground (as is done in a standard slot feed antenna concept). The Q of the radiator can also be reduced for a given volume, since the coupler is removed from the antenna volume. In an embodiment the antenna can include a transmission line and an impedance match circuit directly on the radiator.
Claims26
An antenna comprising:
- a radiating element having a first end and a second end, the first end configured to be connected to a reference voltage plane and the second end not electrically connected to the reference voltage plane;
- a slot in the radiating element, the slot having a first side and a second side and positioned between the first end and the second end, the first side facing the first end and the second side facing the second end;
- and
- a feed coupled to the second side of the slot, wherein the feed is a transmission line positioned on the radiating element, and wherein the transmission line is coupled to the second side via an open-ended stub, the stub having a length approximately equal to a λ/4 wave length.
An antenna for use in connection with a separate ground plane, the antenna comprising:
- a radiating element, the radiating element having first and second opposite surfaces, first and second opposite ends, and a slot, wherein one of the first and second opposite surfaces is configured to be positioned on the separate ground plane, wherein the first end is electrically connected to the separate ground plane and the second end of the radiating element is not electrically connected to the separate ground plane, and wherein the slot is provided through the radiating element from the first surface to the second surface, the slot being positioned between the first and second opposite ends, the slot having first and second opposite sides, the first side facing the first end, the second side facing the second end;
- and
- a feed line, the feed line providing an electrical connection to the radiating element, the feed line providing an indirect feed as the feed line extends across the slot and along one of the first and second opposite surfaces to the first end.
Dependencies are inferred from the claim text.