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US 12,113,260 B2Granted
Dual-band septum polarizer
AssigneeViaSat, Inc.
InventorMartin Gimersky
Life of this patent
Estimating the term…
Abstract
Methods, systems, and devices are described for improving a performance of a waveguide device. A waveguide device that includes a common port and divided ports may also include a sidewall feature that extends across a first set of opposing sidewalls and a second set of opposing sidewalls of the waveguide device. The sidewall feature may have a same shape on each of the first set of opposing sidewalls and a second set of opposing sidewalls. In some cases, the sidewall feature is positioned outside a divided waveguide section of the waveguide device. The position of the sidewall feature may be determined based on an impedance matching metric between the common port and the divided ports, an isolation metric between the divided ports, or both.
Claims31
A waveguide device, comprising:
- a housing comprising a first set of opposing sidewalls and a second set of opposing sidewalls, wherein the housing comprises a common port at a first end of the housing;
- a septum disposed within the housing and extending, at a second end of the housing, from a first sidewall of the first set of opposing sidewalls to a second sidewall of the first set of opposing sidewalls to form a first divided port and a second divided port at the second end of the housing;
- and
- a sidewall feature on the first set of opposing sidewalls and the second set of opposing sidewalls at a position along a central axis of the housing, wherein the sidewall feature has a same shape on each of the first set of opposing sidewalls and the second set of opposing sidewalls, and wherein:
- the sidewall feature comprises a first edge closer to the first end of the housing and a second edge closer to the second end of the housing,
- the sidewall feature has a width in a direction along the central axis of the housing, the width being measured between the first edge and the second edge, and
- a height of the sidewall feature is less than one tenth of a wavelength of an operational frequency of the waveguide device and the width of the sidewall feature is within a range of one tenth to one half of the wavelength of the operational frequency.
4 more elements
A waveguide device, comprising:
- a housing comprising a first set of opposing sidewalls and a second set of opposing sidewalls, wherein the housing comprises a common port at a first end of the housing;
- a septum disposed within the housing and extending, at a second end of the housing, from a first sidewall of the first set of opposing sidewalls to a second sidewall of the first set of opposing sidewalls to form a first divided port and a second divided port at the second end of the housing;
- and
- a sidewall feature on the first set of opposing sidewalls and the second set of opposing sidewalls at a position along a central axis of the housing, wherein the sidewall feature has a same shape on each of the first set of opposing sidewalls and the second set of opposing sidewalls, and wherein:
- the sidewall feature comprises a first edge closer to the first end of the housing and a second edge closer to the second end of the housing,
- the sidewall feature has a width in a direction along the central axis of the housing, the width being measured between the first edge and the second edge, and
- a first portion of the sidewall feature associated with the first sidewall of the first set of opposing sidewalls, a second portion of the sidewall feature associated with the second sidewall of the first set of opposing sidewalls, a third portion of the sidewall feature associated with a first sidewall of the second set of opposing sidewalls, and a fourth portion of the sidewall feature associated with a second sidewall of the second set of opposing sidewalls have a same width.
4 more elements
A waveguide device, comprising:
- a housing comprising a first set of opposing sidewalls and a second set of opposing sidewalls, wherein the housing comprises a common port at a first end of the housing;
- a septum disposed within the housing and extending, at a second end of the housing, from a first sidewall of the first set of opposing sidewalls to a second sidewall of the first set of opposing sidewalls to form a first divided port and a second divided port at the second end of the housing;
- and
- a sidewall feature on the first set of opposing sidewalls and the second set of opposing sidewalls at a position along a central axis of the housing, wherein the sidewall feature has a same shape on each of the first set of opposing sidewalls and the second set of opposing sidewalls, and wherein:
- the sidewall feature comprises a first edge closer to the first end of the housing and a second edge closer to the second end of the housing,
- the sidewall feature has a width in a direction along the central axis of the housing, the width being measured between the first edge and the second edge, and
- the sidewall feature comprises a step that is inset or outset, wherein the first edge of the sidewall feature is in a common waveguide section of the housing and the second edge of the sidewall feature is in a polarizer section of the housing, wherein a height of the sidewall feature varies from one end of the sidewall feature to an opposing end of the sidewall feature such that a first height of the first edge at the one end of the sidewall feature is different from a second height of the second edge at the opposing end of the sidewall feature.
4 more elements
Dependencies are inferred from the claim text.