Waveguide apparatus including channel segments having surfaces that are angularly joined at a junction or a corner

1. An apparatus for signal communication, comprising:

a waveguide with an internal channel that includes a plurality of channel segments interconnected at a junction, the waveguide including a first surface and a second surface;

the first surface and the second surface partially forming a peripheral boundary of the internal channel at the junction, the first surface meeting the second surface at a first corner, and the first surface angularly offset from the second surface by an obtuse angle;

the waveguide further including a third surface further forming the peripheral boundary of the internal channel at the junction;

the third surface meeting the second surface at a second corner; and

the second surface angularly offset from the third surface by an angle between sixty four degrees and one hundred and sixteen degrees.

2. The apparatus of claim 1 , wherein the obtuse angle is between one hundred and twenty two degrees and one hundred and forty eight degrees.

3. The apparatus of claim 1 , wherein the obtuse angle is about one hundred and thirty five degrees.

4. The apparatus of claim 1 , wherein the first corner is an interior inside corner.

5. The apparatus of claim 1 , wherein at least a portion of the internal channel has a lobed cross-sectional geometry.

6. The apparatus of claim 1 , wherein the angle is about ninety degrees.

7. The apparatus of claim 1 , wherein the second corner is an interior inside corner.

8. The apparatus of claim 1 , wherein the second corner is an outside corner.

9. The apparatus of claim 1 , wherein

the waveguide further includes a fourth surface further forming the peripheral boundary of the internal channel at the junction;

the fourth surface meets the third surface at a third corner; and

the third surface is angularly offset from the fourth surface by an obtuse angle.

10. The apparatus of claim 9 , wherein the first surface is parallel with the fourth surface.

11. The apparatus of claim 9 , wherein the first surface is coplanar with the fourth surface.

12. The apparatus of claim 1 , wherein the second surface partially forms a corner at the junction between a first of the plurality of channel segments and a second of the plurality of channel segments.

13. The apparatus of claim 1 , further comprising:

a first transceiver; and

a second transceiver configured in signal communication with the first transceiver through the internal channel.

14. An apparatus for signal communication, comprising:

a waveguide including an internal channel and a notched corner;

the internal channel including a first channel segment and a second channel segment meeting the first channel segment at a junction;

the notched corner located at the junction;

the notched corner meeting a first sidewall surface partially forming the first channel segment at a first V-shaped interface; and

the notched corner meeting a second sidewall surface partially forming the second channel segment at a second V-shaped interface.

15. An apparatus for signal communication, comprising:

a waveguide including an internal channel, an indent feature and a sidewall;

the internal channel including a first channel segment, a second channel segment and a third channel segment that are interconnected at a junction;

the indent feature arranged at the junction opposite the second channel segment, the indent feature projecting out from the sidewall and having a tapered sectional geometry;

the indent feature including a first surface and a second surface that meets the first surface at a distal edge of the indent feature; and

the first surface angularly offset from the second surface by an angle between sixty four degrees and one hundred and sixteen degrees.