Side launch contactless signal conduit structures
Conduit structures for redirecting extremely high frequency (EHF) signals are disclosed herein. The conduit structures discussed herein are designed to re-direct EHF or RF signal energy from a first signal path to a second signal path. The conduit structures according to embodiments discussed herein can re-direct the RF signal energy while simultaneously adhering to specified signaling characteristic of the RF signal and minimizing stray RF signal radiation within a device to support device-to-device contactless communications.
1. An air-filled dielectric conduit structure for use with a contactless communications unit (CCU) mounted to a substrate, wherein the CCU is operative to selectively transmit and receive RF signals along a first path, the conduit structure comprising:
a dielectric structure comprising an RF interface region and an internal air-filled cavity, wherein the CCU is capped by the air-filled cavity, and wherein the internal air-filled cavity redirects RF signals transmitted by the CCU along the first path to the RF interface region via a second path and redirects RF signals received via the RF interface region along the second path to the CCU via the first path.
2. The conduit structure of claim 1 , further comprising a metallized layer that selectively covers external surfaces of the dielectric structure, but not a face of the RF interface, and wherein the metallized layer prevents RF signal penetration through the covered surfaces of the dielectric structure.
3. The conduit structure of claim 1 , wherein the air-filled cavity and the RF interface region strike a balance between misalignment tolerance of the RF interface region and mode control of the RF signal.
4. The conduit structure of claim 1 , wherein the internal air-filled cavity is defined by a plurality of internal tapered surfaces.
5. The conduit structure of claim 4 , wherein the plurality of internal tapered surfaces assist in redirecting RF signals transmitted by the CCU along the first path to the RF interface region via a second path and redirecting RF signals received via the RF interface region along the second path to the CCU via the first path.
6. The conduit structure of claim 4 , wherein the dielectric structure further comprises a plurality of external tapered regions, wherein respective ones of the plurality of internal tapered regions and the plurality of the external tapered regions mimic a similar shape.
7. A dielectric insert dielectric conduit structure for use with a contactless communications unit (CCU) mounted to a substrate, wherein the CCU is operative to selectively transmit and receive RF signals along a first path, the conduit structure comprising:
a dielectric receiving member constructed to be mounted to the substrate and to cover the CCU, the dielectric receiving member comprising a cavity and an opening through which the RF signals travel along a second path; and
a dielectric insert constructed to be secured within and occupy a substantial portion of the cavity and to be positioned adjacent to the CCU, the dielectric insert comprising an RF interface positioned adjacent to the opening, wherein a combination of the dielectric receiving member and the dielectric insert redirects RF signals transmitted by the CCU along the first path to the RF interface region via the second path and redirect RF signals received via the RF interface region along the second path to the CCU via the first path.
8. The conduit structure of claim 7 , wherein the dielectric receiving member is constructed from a metalized plastic.
9. The conduit structure of claim 7 , wherein the dielectric receiving member is a plastic structure that is substantially covered by a metal.
10. The conduit structure of claim 7 , wherein the dielectric insert is a plastic structure that functions as a waveguide.
11. A system comprising:
a substrate;
a contactless communications unit (CCU) mounted to the substrate, wherein the CCU is operative to selectively transmit and receive RF signals along a first path, wherein the RF signal comprises RF radiation; and
a RF signal redirection structure mounted over the CCU and secured to the substrate, wherein the RF signal redirection structure is operative to redirect RF signals from the first path to a second path or redirect RF signals from the second path to the first path for the CCU.
12. The system of claim 11 , wherein the RF signal redirection structure is an air-filled redirection conduit structure.
13. The system of claim 11 , wherein the RF signal redirection structure is dielectric insertion conduit structure.
14. The system of claim 11 , further comprising a housing, wherein the RF signal redirection structure comprises a RF interfacing region that abuts or is integrated within the housing.