Launch assembly for coupling EM signals between a CCU and a waveguide, where the CCU is enclosed by a cover region including transition and waveguide interface regions therein for coupling to the waveguide
Conduit structures for guiding extremely high frequency (EHF) signals are disclosed herein. The conduit structures can include EHF containment channels that define EHF signal pathways through which EHF signal energy is directed. The conduit structures can minimize or eliminate crosstalk among adjacent paths within a device and across devices. Launch structures that interface with waveguides are also disclosed herein. Launch structures can control the EHF interface impedance between a contactless communication unit and the waveguide. Waveguide structures discussed herein are designed to provide maximum bandwidth with minimal jitter over a desired distance.
1. A launch assembly comprising:
a launch configured to direct extreme high frequency (EHF) electromagnetic (EM) signals comprising:
a cover region partially enclosing a contactless communications unit (CCU) configured to couple the EHF EM signals, the cover region including an opening to guide the EHF EM signals into a transition region;
the transition region configured to collimate the EHF EM signals toward a waveguide interface region, the transition region including a void having a trapezoid-shaped cross-section; and
the waveguide interface region configured to interface with a waveguide and to direct the EHF EM signals from the transition region to the waveguide, the waveguide interface region including a channel having a cross-section, the cross-section of the waveguide interface region and a cross-section of a dielectric body disposed within the waveguide is dimensioned substantially to be the same,
wherein the cover region, the transition region, and the waveguide interface region are integrated with each other.
2. The launch assembly of claim 1 , further comprising the waveguide.
3. The launch assembly of claim 1 , wherein the launch is an angled launch in which the contactless signals pass through the channel along a first path and are redirected to a second path.
4. The launch assembly of claim 3 , wherein the waveguide interface region comprises an angled corner that redirects EHF EM signals from the first path to the second path.
5. The launch assembly of claim 4 , wherein the angled corner is constructed to ensure the EHF EM signals engage in constructive interference when being redirected from the first path to the second path.
6. The launch assembly of claim 1 , wherein the launch is constructed from an injection molded plastic.
7. The launch assembly of claim 1 , wherein the launch is constructed from at least two metal components that interlock with each other to form the channel.
8. The launch assembly of claim 1 , wherein the launch comprises an external feature configured to interface with a reciprocal feature that enables the launch assembly to be secured to the substrate.
9. The launch assembly of claim 1 , wherein the transition region includes a wall defining the void, and wherein an interior surface of the wall is conductive.
10. The launch assembly of claim 1 , wherein the waveguide includes a tapered portion and wherein the channel of the waveguide interface region is configured to receive the tapered portion.
11. The launch assembly of claim 1 , wherein the waveguide interface region includes a corner configured to direct the EHF EM signals from a first direction to a second direction different from the first direction.
12. The launch assembly of claim 11 , wherein the corner is angled to enable constructive interference of the EHF EM signals.
13. The waveguide of claim 1 , wherein a width of the cross-section of the channel is at least half of a longest wavelength of the EHF EM signals and at most a shortest wavelength of the EHF EM signals.
14. The launch assembly of claim 1 , wherein the waveguide interface region includes a wall defining the channel, and wherein an interior surface of the wall is conductive.
15. The launch assembly of claim 1 , wherein a wall of the waveguide interface region and a wall of the waveguide are dimensioned substantially the same.
16. The launch assembly of claim 1 , wherein the opening is positioned to be aligned with an antenna of the CCU.
17. The launch assembly of claim 1 , wherein a width of the opening is at least half of a longest wavelength of the EHF EM signals.
18. The launch assembly of claim 1 , wherein the void includes a dielectric material.