Waveguide Busbar

• US 20130335165A1
• Filed: 06/14/2013
• Published: 12/19/2013
• Est. Priority Date: 06/15/2012
• Status: Active Grant

• Current Assignee: Tesat Spacecom GmbH & Company KG (Airbus SE)
• Original Assignee: Tesat Spacecom GmbH & Company KG (Airbus SE)
• Inventors: ARNOLD, Christian, PARLEBAS, Jean, REICHERTER, Daniel
• Granted Patent: US 8,988,164 B2
• Time in Patent Office: Days
• US Class Current: 333/135
• CPC Class Codes: H01P 1/20 Frequency-selective devices, e.g. filters
• CPC Class Codes: H01P 1/208 Cascaded cavities; Cascaded resonators inside a hollow waveguide structure H01P1/205 takes precedence
• CPC Class Codes: H01P 1/30 for compensation of, or protection against, temperature or moisture effects ; for improving power handling capability H01P1/04, H01P1/08 take precedence
• CPC Class Codes: H01P 5/12 Coupling devices having more than two ports H01P5/04 takes precedence
• CPC Class Codes: H01P 7/06 Cavity resonators

Abstract

A waveguide busbar for converting a plurality of high-frequency input signals into high-frequency output signals, includes a waveguide, a plurality of input ports, which are arranged along the waveguide, such that each input port is intended to receive a high-frequency input signal, an output port on the waveguide for delivering the high-frequency output signal and at least one parallel resonator, which is connected to the waveguide busbar between two input ports. The parallel resonator has a mechanically adjustable volume with which a phase relation of the waveguide is adjustable between the two input ports.

Claims

1. A waveguide busbar configured to convert a plurality of high-frequency input signals into a high-frequency output signal, the waveguide busbar comprising:

a waveguide;

a plurality of input ports, which are arranged along the waveguide, such that each input port is configured to receive a high-frequency input signal;

an output port on the waveguide configured to deliver the high-frequency output signal;

a parallel resonator connected to the waveguide busbar between two input ports;

wherein the parallel resonator is configured with a mechanically adjustable volume with which a phase relation of the waveguide between the two input ports is adjustable.

2. The waveguide busbar according to claim 1, wherein the parallel resonator comprises an actuator configured to alter the volume of the parallel resonator.

3. The waveguide busbar according to claim 2, wherein the actuator comprises a thermomechanical actuator.

4. The waveguide busbar according to claim 3, wherein the thermomechanical actuator is configured to change the volume of the parallel resonator so that a change in the phase relation of the waveguide because of expansion of the waveguide due to a change in temperature is reduced by the parallel resonator.

5. The waveguide busbar according to claim 2, wherein the actuator comprises an electromechanical actuator.

6. The waveguide busbar according to claim 5, further comprising:

an electronic controller, which is configured to control to the electromechanical actuator, such that a change in the phase relation of the waveguide because of an expansion of the waveguide due to a change in temperature is reduced by the parallel resonator.

7. The waveguide busbar according to claim 1, wherein the parallel resonator has a resonant volume of a variable length.

8. The waveguide busbar according to claim 1, wherein the parallel resonator comprises a movable slide element in a hollow space.

9. The waveguide busbar according to claim 1, further comprising:

a plurality of parallel resonators.

10. The waveguide busbar according to claim 9, wherein at least one of the plurality of parallel resonators is connected to the waveguide between two neighboring input ports.

11. The waveguide busbar according to claim 9, wherein at least two parallel resonators are connected to the waveguide between two neighboring input ports.

12. The waveguide busbar according to claim 1, further comprising:

a plurality of connecting pieces, which are connected to the input ports;

wherein phase lengths of waveguide sections between the two input ports and phase lengths of the connecting pieces are set for predefined frequencies of the high-frequency output signals.

13. The waveguide busbar according to claim 1, wherein a resonant range of the parallel resonator is set for a pass band of the waveguide busbar.

14. An output multiplexer, comprising:

a waveguide busbar configured to convert a plurality of high-frequency input signals into a high-frequency output signal, the waveguide busbar comprising a waveguide;

a plurality of input ports, which are arranged along the waveguide, such that each input port is configured to receive a high-frequency input signal;

an output port on the waveguide configured to deliver the high-frequency output signal;

a parallel resonator connected to the waveguide busbar between two input ports;

wherein the parallel resonator is configured with a mechanically adjustable volume with which a phase relation of the waveguide between the two input ports is adjustable;

a plurality of channel filters which are connected to the input ports of the waveguide busbar.

15. A communication satellite, comprising:

an output multiplexer, comprising

a waveguide busbar configured to convert a plurality of high-frequency input signals into a high-frequency output signal, the waveguide busbar comprising a waveguide;

a plurality of input ports, which are arranged along the waveguide, such that each input port is configured to receive a high-frequency input signal;

an output port on the waveguide configured to deliver the high-frequency output signal;

a parallel resonator connected to the waveguide busbar between two input ports;

wherein the parallel resonator is configured with a mechanically adjustable volume with which a phase relation of the waveguide between the two input ports is adjustable;

a plurality of channel filters which are connected to the input ports of the waveguide busbar.