Nozzle cap assembly

1. A nozzle cap assembly comprising:

a body with a first curved side wall defining an axis, the body defining a top end and a bottom end positioned opposite from the top end;

a nut disposed about the axis, the top end of the body positioned between the nut and the bottom end of the body;

a spacer comprising a hollow body extending about the axis extending from the nut to the bottom end of the body, the hollow body defining a curved outer surface, the spacer positioned between the nut and the top end of the body; and

an antenna assembly coupled to the curved outer surface of the spacer.

2. The nozzle cap assembly of claim 1 , further comprising an antenna cover affixed over the antenna assembly.

3. The nozzle cap assembly of claim 1 , wherein the antenna assembly is positioned external to the hollow body.

4. The nozzle cap assembly of claim 1 , wherein the antenna assembly is coupled to the curved outer surface with an adhesive.

5. The nozzle cap assembly of claim 1 , wherein

the antenna assembly is axially positioned between the nut and a portion of the body with respect to the axis.

6. The nozzle cap assembly of claim 1 , wherein:

the antenna assembly comprises at least one antenna structure and a printed circuit board;

the at least one antenna structure is mounted to the printed circuit board; and

the printed circuit board is coupled to the curved outer surface.

7. The nozzle cap assembly of claim 6 , wherein:

the at least one antenna structure comprises a first antenna structure and a second antenna structure; and

the first antenna structure and the second antenna structure are coupled to the printed circuit board.

8. The nozzle cap assembly of claim 6 , wherein the printed circuit board is curved at least partially around the curved outer surface.

9. The nozzle cap assembly of claim 1 , wherein the body defines internal threading extending from the bottom end at least partially towards the top end.

10. The nozzle cap assembly of claim 1 , wherein the spacer is detachably coupled to the body.

11. The nozzle cap assembly of claim 1 , wherein the antenna assembly comprises at least one antenna structure and a cover layer, the cover layer covering the at least one antenna structure.

12. A nozzle cap assembly comprising:

a body defining a top end and a bottom end, the body defining internal threading extending into the bottom end;

a nut comprising a cap portion and defining a bottom;

a spacer comprising a curved outer surface, the spacer at least partially defining a cavity, the spacer positioned at least partially between the nut and the top end of the body; wherein the body, the nut, and the spacer are axially aligned about an axis extending from the nut to the bottom end of the body; and

a printed circuit board wrapping at least partially around the curved outer surface of the spacer, the curved outer surface defined on the spacer at least partially between the top end of the body and a bottom of the nut, the printed circuit board comprising at least one antenna structure.

13. The nozzle cap assembly of claim 12 , wherein the top end of the body is sealably engaged within the curved outer surface at a bottom of the spacer.

14. The nozzle cap assembly of claim 12 , further comprising a top lip and a bottom lip on the spacer.

15. The nozzle cap assembly of claim 14 , wherein a distance from the top lip to the bottom lip of the spacer is greater than a distance between the top end to the bottom end of the body.

16. The nozzle cap assembly of claim 14 , wherein the top lip of the spacer retains at least a portion of the bottom of the cap portion comprising the nozzle; and the bottom lip of the spacer retains at least a portion of the top end of the body.

17. The nozzle cap assembly of claim 16 , wherein:

the top lip of the spacer sealably retains the cap portion; and

the bottom lip of the spacer sealably retains the top end of the body.