Dual Band Tapered Slot and Loop Ground Edge Radiating Antenna Structure
AssigneeSilicon Laboratories Inc.
InventorTommi Linnala
Life of this patent
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Abstract
A dual band antenna structure is disclosed. The dual band antenna structure utilizes features from loop ground edge radiating antennas and tapered slot antennas to create an antenna that has at least two resonance frequencies. The dual band antenna structure includes a loop ground edge radiating antenna, which has a first resonance frequency. The trace used to create the loop ground edge radiating antenna is shaped to also serve as part of a tapered slot antenna to provide a second resonance frequency. The dual band antenna structure is useful for network devices that operate at multiple frequencies, such as those using the
Claims20
A dual band antenna, comprising:
- a printed circuit board having a ground plane on a top layer, wherein the ground plane comprises a conductive material;
- a ground clearance disposed on the top layer, wherein the ground clearance lacks the conductive material;
- a loop ground edge radiating antenna comprising a radiator trace disposed in the ground clearance;
- and
- a tapered slot antenna formed by the radiator trace and a first edge of the ground plane.
A dual band antenna, comprising:
- a printed circuit board having a ground plane on a top layer, wherein the ground plane comprises a conductive material;
- a ground clearance disposed on the top layer, wherein the ground clearance is rectangular shaped and lacks the conductive material, wherein a side of the ground clearance is an edge of the printed circuit board and a first edge and a second edge are adjacent to the side;
- a tuning trace disposed in the ground clearance, a proximal end of the tuning trace in communication with an input capacitor and a RF feed;
- and
- a radiator trace in communication with a distal end of the tuning trace, wherein a first portion of the radiator trace is adjacent to the first edge so as to form a slot, and a second portion of the radiator trace extends away from the first edge and toward the second edge, and wherein a distal end of the second portion is capacitively coupled to the ground plane at the second edge.
Dependencies are inferred from the claim text.