Compact radio frequency antenna apparatuses
Antenna assemblies are described herein. In particular, described herein are multi-focal-point antenna devices and compact radio frequency (RF) antenna devices. Any of these assemblies may include a primary feed that includes a single patterned emitting surface from which multiple different beams of RF signals are emitted corresponding to different antenna input feeds each communicating with the patterned antenna emitting surface. The antenna assembly is therefore capable of emitting beams in the same direction having different polarizations using a single primary feed. Also described herein are compact RF antenna devices having a lightpipe that passes through the single patterned emitting surface.
1. A compact radio frequency (RF) antenna device having a lightpipe, the device comprising:
a base of printed circuit board (PCB) material including a light emitting diode (LED);
a primary feed held above the PCB comprising a flat emitting surface with an aperture therethrough;
a lightpipe extending from the LED though the aperture of the primary feed, the lightpipe comprising a stem portion coupled to an emission portion of the LED and extending through the aperture to a cap and an illumination region on or around the cap; and
a radio circuitry on the PCB and coupled to the primary feed, wherein the radio circuitry is configured to transmit RF signals to and from the primary feed.
2. The apparatus of claim 1 , wherein the antenna device is configured as an access point.
3. The apparatus of claim 1 , further comprising a shallow dish-shaped housing enclosing the PCB, primary feed and radio circuitry.
4. The apparatus of claim 1 , wherein the primary feed is directly connected to the PCB by grounding pins or legs and at least one feed point.
5. The apparatus of claim 1 , wherein the stem portion is funnel-shaped, having a conical mouth at the end of the stem.
6. The apparatus of claim 1 , wherein the cap of the lightpipe comprises a translucent ring.
7. The apparatus of claim 1 , further comprising a cover configured to mate with the cap.
8. The apparatus of claim 1 , wherein the cap is configured to cover the mouth of the lightpipe.
9. The apparatus of claim 1 , wherein the lightpipe is funnel-shaped, having a conical mouth distal from the stem, wherein the mouth has a larger perimeter than the stem.
10. The apparatus of claim 1 , wherein the stem encompasses the LED.
11. The apparatus of claim 1 , wherein the lightpipe comprises a polycarbonate material.
12. The apparatus of claim 1 , wherein the lightpipe is oriented perpendicular to the PCB.
13. The apparatus of claim 1 , wherein the lightpipe comprises a circular mouth distal to the LED and stem.
14. The apparatus of claim 1 , wherein the lightpipe comprises a square mouth.
15. The apparatus of claim 1 , wherein the stem of the lightpipe is pyramidal or conical.
16. The apparatus of claim 1 , wherein the mouth of the lightpipe is textured to diffuse light from the LED.
17. A compact radio frequency (RF) antenna device having a lightpipe, the device comprising:
a base of printed circuit board (PCB) material including a light emitting diode (LED);
a primary feed comprising a sheet of metal having a flat emitting surface with an aperture through the emitting surface, wherein the primary feed is separated from the base by a plurality of antenna input feeds extending from the PCB;
a lightpipe extending from the LED though the aperture of the primary feed, the lightpipe comprising a stem portion coupled to an emission portion of the LED and extending through the aperture to a cap comprising a translucent illumination region; and
a radio circuitry on the PCB and coupled to the primary feed through the plurality of antenna input feeds, wherein the radio circuitry is configured to transmit RF signals to and from the primary feed through the plurality of antenna input feeds.