Tuning a cavity filter based on positional data for tuning members
AssigneeADC Telecommunications, Inc.
InventorHannu K. Impio
Life of this patent
Estimating the term…
Abstract
A method for tuning a cavity filter is provided. The cavity filter includes a plurality of tuning members. The method includes selecting a stored set of positional values for the tuning members, driving the tuning members of the cavity filter to the stored set of positional values, and further adjusting the position of the tuning members as necessary to achieve a desired frequency response for the cavity filter.
Claims34
A tool for tuning a cavity filter, the tool comprising:
- a shaft assembly that is adapted to adjust and to monitor the position of tuning members in a plate of a cavity filter;
- a positional measuring unit, responsive to the shaft, that is adapted to determine positional data for a tuning member;
- a data base for storing positional data for the plurality of tuning members;
- a controller, coupled to the data base, the positional measuring unit and the shaft assembly;
- wherein the controller determines the position of tuning members in a tuned filter based on measurements from the positional measuring unit for storage in the data base;
- and
- wherein the controller controls the position of tuning members in an un-tuned filter based on positional data in the data base using the shaft assembly.
A tool for tuning a filter, the tool comprising:
- a housing having an opening in an end of the housing;
- a shaft, disposed in the housing, the shaft adapted to extend through the opening in the housing;
- a motor, coupled to the shaft;
- a block, coupled to the motor, wherein the shaft extends from the block through the opening;
- a positional measuring unit including a measurement head coupled to the block and a rail coupled to the housing, the positional measuring unit being adapted to determine positional data for a tuning member;
- a spring, coupled to the housing and the block, that is adapted to bias the block, shaft and motor in the housing;
- a data base for storing positional data for the plurality of tuning members;
- a controller, coupled to the data base, the positional measuring unit and the motor;
- wherein the controller controls the position of tuning members in an un-tuned filter based on positional data in the data base using the shaft.
A tool for tuning a cavity filter, the tool comprising:
- a shaft assembly that is adapted to adjust the position of tuning members in a plate of a cavity filter;
- a positional measuring unit, responsive to the shaft assembly, that is adapted to determine positional data for a tuning member;
- a data base for storing positional data for tuning members;
- a controller, coupled to the data base, the positional measuring unit and the shaft assembly;
- and
- wherein the controller controls the position of tuning members in an un-tuned filter based on positional data in the data base and positional data from the positional measuring unit using the shaft assembly.
A method for tuning a cavity filter having a plurality of tuning members, the method comprising:
- selecting a stored set of positional values for the tuning members;
- driving the tuning members of the cavity filter to the stored set of positional values;
- and
- further adjusting the position of the tuning members as necessary to achieve a desired frequency response for the cavity filter.
A tool for pre-tuning a cavity filter, the tool comprising:
- a shaft assembly adapted to drive tuning screws to selected depths in a plate of a housing of the cavity filter;
- a gauge, coupled to the shaft assembly, adapted to determine a displacement associated with the tuning screws;
- and
- a controller, coupled to drive the shaft assembly based on feedback from the gauge, such that the shaft assembly drives each tuning screw to a selected depth in the plate of the cavity filter.
A method for tuning a plurality of cavity filters each having a plurality of tuning members, the method comprising:
- measuring positional values for a plurality of tuning members in a tuned, reference cavity filter;
- storing the positional values in a database as a set of positional values;
- selecting a stored set of positional values;
- driving the tuning members of each cavity filter of the plurality of cavity filters to the stored set of positional values;
- and
- further adjusting the position of the tuning members as necessary to achieve a desired frequency response for each cavity filter.
Dependencies are inferred from the claim text.