Methods and apparatuses for tuning a filter

Abstract

The present application describes an apparatus a non-transitory memory having instructions stored thereon and a processor operably coupled to the non-transitory memory configured to execute the instructions. The executed instructions include extracting eigenvalues for a coupling matrix of a target device. The executed instructions also include extracting a first set of eigenvalues for a coupling matrix of a device under tune (DUT). The eigenvalues of the target device may be different than the first set of eigenvalues of the DUT. The executed instructions further include causing a material removal source to be positioned at a first location of the DUT. The executed instructions even further include causing the material removal source to tune the DUT. The executed instructions yet further include measuring a second set of eigenvalues of the DUT. The executed instructions yet even further include observing an iterative convergence of the DUT and the target device.

What is claimed is: 
     
         1 . An apparatus comprising:
 a non-transitory memory having instructions stored thereon; and   a processor, operably coupled to the non-transitory memory, configured to execute the instructions including:
 extracting eigenvalues for a coupling matrix of a target device and a first set of eigenvalues for a coupling matrix of a device under tune (DUT), where the eigenvalues of the target device are different than the first set of eigenvalues of the DUT; 
 causing a material removal source to be positioned at a first location of the DUT; 
 causing the material removal source to tune the DUT; 
 measuring a second set of eigenvalues of the DUT; and 
 observing an iterative convergence of the DUT and the target device. 
   
     
     
         2 . The apparatus of  claim 1 , wherein the DUT is a filter. 
     
     
         3 . The apparatus of  claim 2 , wherein the filter is any one or more of a ceramic monoblock filter or recessed top pattern (RTP) monoblock filter. 
     
     
         4 . The apparatus of  claim 1 , wherein the material removal source is a femto-second laser pulsing at less than about 1 pico-second. 
     
     
         5 . The apparatus of  claim 1 , wherein the eigenvalues of the target device are based on a number of resonators of the target device plus 2. 
     
     
         6 . The apparatus of  claim 1 , wherein the coupling matrices are representative of resonant center frequencies and resonator cross couplings. 
     
     
         7 . The apparatus of  claim 1 , wherein the iterative convergence is in less than about 5 minutes. 
     
     
         8 . The apparatus of  claim 7 , wherein the iterative convergence is less than about 1 minute. 
     
     
         9 . The apparatus of  claim 1 , wherein the tune includes removing metal on pads of the DUT. 
     
     
         10 . The apparatus of  claim 1 , wherein the processor is further configured to execute the instructions of calculating a tune path for iterative convergence of the second or a subsequent set of eigenvalues of the DUT with the eigenvalues of the target device. 
     
     
         11 . A computer readable medium including program instructions stored thereon that, when executed by a processor, effectuate:
 extracting eigenvalues for a coupling matrix of a target device;   extracting a first set of eigenvalues for a coupling matrix of a device under tune (DUT);   causing a material removal source to tune the DUT;   measuring a second set of eigenvalues of the DUT; and   calculating a tune path for iterative convergence between the second or a subsequent set of eigenvalues of the DUT and the eigenvalues of the target device.   
     
     
         12 . The computer readable medium of  claim 11 , wherein the eigenvalues of the target device are different than the first set of eigenvalues of the DUT. 
     
     
         13 . The computer readable medium of  claim 11 , wherein the second set of eigenvalues is different from the first set of eigenvalues of the DUT. 
     
     
         14 . The computer readable medium of  claim 11 , wherein the program instructions further effectuate:
 extracting eigenvectors for the coupling matrix of the target device and a first set of eigenvectors for the coupling matrix of the DUT;   measuring a second set of eigenvectors of the DUT; and   calculating a tune path for iterative convergence of the second or a subsequent set of eigenvectors of the DUT with the eigenvectors of the target device.   
     
     
         15 . The computer readable medium of  claim 11 , wherein the eigenvalues of the target device are based on a number of resonators of the target device plus 2. 
     
     
         16 . The computer readable medium of  claim 11 , wherein the coupling matrices are representative of resonant center frequencies and resonator cross couplings. 
     
     
         17 . The computer readable medium of  claim 11 , wherein the iterative convergence is exhibited in less than 5 minutes. 
     
     
         18 . The computer readable medium of  claim 11 , wherein the DUT includes a recessed top pattern, and the tune is performed on the recessed top pattern. 
     
     
         19 . A computer readable medium including program instructions stored thereon that, when executed by a processor, effectuate:
 extracting eigenvalues for a coupling matrix of a target device;   extracting a first set of eigenvalues for a coupling matrix of a device under tune (DUT), where the first set of eigenvalues of the DUT are different than the eigenvalues of the target device;   causing a material removal source to be positioned at a first location of the DUT;   causing the material removal source to tune the DUT;   measuring a second set of eigenvalues of the DUT; and   observing an iterative convergence of the DUT and the target device.   
     
     
         20 . The computer readable medium of  claim 19 , wherein the tune removes metal on pads of the DUT.