Waveguide component for high frequency testing
A waveguide interface is disclosed. The disclosed waveguide interface comprises: an inner boundary region extending peripherally around a cavity, a recessed region extending peripherally around the inner boundary region, and a plurality of protrusions extending from the recessed region.
1. A waveguide interface, comprising:
an inner boundary region extending peripherally around a cavity;
a recessed region extending peripherally around the inner boundary region;
a plurality of protrusions extending from the recessed region; and
an outer boundary region extending peripherally around the recessed region,
wherein:
the inner boundary region, the outer boundary region, and the plurality of protrusions are substantially level with one another;
the plurality of protrusions comprise an inner ring of a first set of protrusions configured peripherally around the inner boundary region, and an outer ring of a second set of protrusions configured peripherally around the first set of protrusions;
the first set of protrusions have a different size than the second set of protrusions; and
the waveguide interface is configured to function as a waveguide at a predefined distance from a device under test without coupling or fastening the waveguide interface to the device under test.
2. The waveguide interface of claim 1 , wherein the plurality of protrusions is arranged concentrically within the recessed region.
3. The waveguide interface of claim 1 , further comprising at least one hole configured to receive a fastener.
4. The waveguide interface of claim 1 , further comprising at least one hole configured to receive an alignment pin.
5. The waveguide interface of claim 1 , wherein the recessed region has a depth that is a quarter of a wavelength of electromagnetic waves guided through the cavity at a frequency at which the waveguide interface is configured to operate.
6. The waveguide interface of claim 1 , wherein a protrusion of the plurality of protrusions is shaped like a rectangular column.
7. The waveguide interface of claim 1 , wherein the plurality of protrusions is arranged as a first ring of protrusions surrounding the inner boundary region and a second ring of protrusions surrounding the first ring of protrusions.
8. The waveguide interface of claim 1 , wherein at least a part of the inner boundary region has a thickness extending radially outward from the cavity to the recessed region of a quarter of a wavelength of electromagnetic waves guided through the cavity at a frequency at which the waveguide interface is configured to operate.
9. The waveguide interface of claim 1 , wherein the cavity, the inner boundary region, and the plurality of protrusions are substantially level with one another.
10. The waveguide interface of claim 1 , wherein an offset with respect between two of the inner boundary region, the outer boundary region, and the plurality of protrusions is less than 20% of a height of a first protrusion of the plurality of protrusions.
11. The waveguide interface of claim 1 , wherein an offset between a first protrusion of the plurality of protrusions and one or more of the inner boundary region and the outer boundary region is less than λ0/4, and λ0 corresponds to a wavelength of an operating frequency in air.
12. The waveguide interface of claim 1 , wherein a device under test is positioned between a first waveguide component and a second waveguide component, and the first waveguide component and the second waveguide component respectively comprise the waveguide interface.
13. The waveguide interface of claim 1 , wherein the waveguide interface is gold-plated or comprises brass.
14. The waveguide interface of claim 1 , wherein:
the plurality of protrusions comprises protrusions having a width less than λ 0 /8 and a pitch between protrusions of less than λ 0 /4; and
λ 0 corresponds to a wavelength of an operating frequency in air.
15. The waveguide interface of claim 1 , wherein the plurality of protrusions comprises five rings of protrusions around the inner boundary region.
16. The system of claim 15 , further comprising an additional set of one or more tracks configured to guide the electronic testing equipment along a second linear direction orthogonal to the first linear direction.
17. The system of claim 15 , wherein movement of the electronic testing equipment along the first linear direction is actualized by a motor.
18. The system of claim 15 , wherein movement of the electronic testing equipment along the first linear direction is at least in part controlled by a computer.
19. The system of claim 15 , further comprising a turntable coupled to the electronic testing equipment that is configured to allow the electronic testing equipment to rotate about an axis orthogonal to the first linear direction.
20. The waveguide interface of claim 1 , further comprising:
an anti-cocking ring extending peripherally around the outer boundary region,
wherein:
the anti-cocking ring comprises a set of holes recessed from a surface of the outer boundary region; and
the set of holes configured to receive one or more of alignment pins and fasteners.
21. A system, comprising:
a waveguide component that includes a first end, wherein the first end includes an interface configured to electrically couple to a device undergoing electronic testing; and
a set of one or more tracks configured to couple to an electronic testing equipment that is configured to couple to a second end of the waveguide component;
wherein:
the interface comprises:
an inner boundary region extending peripherally around a cavity;
a recessed region extending peripherally around the inner boundary region;
a plurality of protrusions extending from the recessed region; and
an outer boundary region extending peripherally around the recessed region;
the inner boundary, the outer boundary region, and the plurality of protrusions are substantially level with one another;
the plurality of protrusions comprise an inner ring of a first set of protrusions configured peripherally around the inner boundary region, and an outer ring of a second set of protrusions configured peripherally around the first set of protrusions;
the first set of protrusions have a different size than the second set of protrusions; and
the waveguide interface is configured to function as a waveguide at a predefined distance from a device under test without coupling or fastening the waveguide interface to the device under test.
22. The system of claim 21 , wherein the device undergoing testing is positioned a distance from the interface at the first end of the waveguide component that is less than a quarter of a wavelength of electromagnetic waves travelling in air at a frequency at which the waveguide interface is configured to operate but is not in physical contact with the waveguide interface.
23. The system of claim 21 , wherein the electronic testing equipment is an extension component of a network analyzer.
24. The system of claim 21 , wherein the set of one or more tracks is configured to guide the electronic testing equipment along a first linear direction.
25. A method, comprising:
aligning a device under test with a waveguide interface of a waveguide component, wherein the waveguide interface includes an inner boundary region extending peripherally around a cavity, a recessed region extending peripherally around the inner boundary region, a plurality of protrusions extending from the recessed region, and an outer boundary region extending peripherally around the recessed region; and
causing electromagnetic waves to be transmitted from an electronic testing equipment through the waveguide component to the device under test,
wherein:
the inner boundary, the outer boundary region, and the plurality of protrusions are substantially level with one another;
the plurality of protrusions comprise an inner ring of a first set of protrusions configured peripherally around the inner boundary region, and an outer ring of a second set of protrusions configured peripherally around the first set of protrusions;
the first set of protrusions have a different size than the second set of protrusions; and
the waveguide interface is configured to function as a waveguide at a predefined distance from a device under test without coupling or fastening the waveguide interface to the device under test.