Ground structure in rf waveguide array
AssigneeOclaro Technology Limited
InventorsFlavio Dell'Orto, Marco Villa
Life of this patent
Estimating the term…
Abstract
A radio frequency, RF, waveguide array. The array comprises a substrate and an electrical RF transmission line array. The substrate comprises a plurality of waveguides, each waveguide being elongate in a first direction. The electrical RF transmission line array is located on a face of the substrate and comprises a plurality of signal electrodes and at least two ground electrodes. Portions of the ground electrodes which are relatively distal from the signal electrodes have reduced height in the direction transverse to the substrate to reduce the amount of material required to produce them.
Claims20
A radio frequency, RF, waveguide array, the array comprising:
- a substrate comprising a plurality of optical waveguides, each waveguide being elongate in a first direction;
- an electrical RF transmission line array located on a face of the substrate and comprising:
- a plurality of signal electrodes;
- and
- a plurality of ground electrodes;
- each electrode extending in the first direction;
- wherein:
- each signal electrode is positioned to provide a signal to two respective waveguides;
- the ground electrodes include one intermediate ground electrode positioned between each pair of signal electrodes;
- the intermediate ground electrodes have a first height in one or more first regions and a second height in at least one second region, where the height is measured in a direction perpendicular to the face of the substrate, each intermediate ground electrode having a U-shaped cross section perpendicular to the first direction;
- for each intermediate electrode, each first region is closer to a respective signal electrode than the second region;
- and
- the second height is less than 75% of the first height.
A radio frequency, RF, waveguide array, the array comprising:
- a substrate comprising a plurality of optical waveguides, each waveguide being elongate in a first direction;
- an electrical RF transmission line array located on a face of the substrate and comprising:
- a plurality of signal electrodes;
- and
- a plurality of ground electrodes;
- each electrode extending in the first direction;
- wherein:
- each signal electrode is positioned to provide a signal to two respective waveguides;
- the ground electrodes include two or more intermediate ground electrode positioned between each pair of signal electrodes and separated by channels;
- the intermediate ground electrodes have a first height in one or more first regions and a second height in at least one second region which extends to one of the channels, where the height is measured in a direction perpendicular to the face of the substrate, each intermediate ground electrode having a L-shaped cross section perpendicular to the first direction;
- for each intermediate electrode, each first region is closer to a respective signal electrode than the second region;
- and
- the second height is less than 75% of the first height.
Dependencies are inferred from the claim text.