Kurt Francis Raihn

US Patent:

20030222731, Dec 4, 2003

Filed:

May 29, 2002

Appl. No.:

10/159974

Inventors:

Kurt Raihn - Goleta CA, US
Gregory Hey-Shipton - Santa Barbara CA, US
Matthew Hernandez - Santa Barbara CA, US

Assignee:

SUPERCONDUCTOR TECHNOLOGIES, INC.

International Classification:

H01P001/203

US Classification:

333/09900S, 333/202000, 333/219000, 505/210000

Abstract:

A dual-mode resonator comprises a dielectric substrate having a region divided into four quadrants, and a ring resonator forming quadrangularly symmetrical configurations within the four quadrants of the region. The symmetrical configurations may be formed from folded sections of the resonator, so that parallel lines with opposite currents that cancel to minimize the far-field radiation of the filter structures. The symmetrical configuration can also be meandered, so that opposite currents in parallel line segments within each meander and the line segments that interconnect the meanders cancel to minimize the far-field radiation of the filter structures. One resonator can be used in a two-pole dual-mode filter structures, or multiple resonators can be used in more complex dual-mode filter structures. The filter structures also include input and output couplings with capacitors and transmission lines that directly connected to the resonator to provide a point of contact, which more accurately represent ideal lumped element capacitor connections from computer modeling.

US Patent:

20110281733, Nov 17, 2011

Filed:

Apr 25, 2011

Appl. No.:

13/093539

Inventors:

Kurt Raihn - Goleta CA, US
Neal Fenzi - Santa Barbara CA, US

Assignee:

SUPERCONDUCTOR TECHNOLOGIES, INC. - Santa Barbara CA

International Classification:

H01P 1/20
H01B 12/00
H01L 39/02

US Classification:

505210, 333203

Abstract:

A narrowband filter tuned at a center frequency. The filter comprises an input terminal, an output terminal, and a plurality of resonators coupled in cascade between the input terminal and the output terminal. Each of the resonators is tuned at a resonant frequency substantially equal to the center frequency. The resonant frequencies of a primary set of the resonators and a secondary set of the resonators are of different orders.

US Patent:

20220376674, Nov 24, 2022

Filed:

Mar 23, 2022

Appl. No.:

17/702679

Inventors:

- Austin TX, US
Kurt Raihn - Grass Valley CA, US

International Classification:

H03H 9/64
H03H 9/25
H03H 9/145

Abstract:

A filter circuit has a cascaded resonator circuit with a first acoustic resonator and a second acoustic resonator connected in series on a printed circuit board (PCB). The admittances as functions of frequency of the first and second acoustic resonators are substantially identical. The filter circuit also has a composite resonator circuit formed by a capacitor connected in parallel with the second acoustic resonator on the PCB. The capacitor improves a steepness of an upper bandpass edge of the filter circuit.

US Patent:

20220311420, Sep 29, 2022

Filed:

Aug 27, 2021

Appl. No.:

17/460095

Inventors:

- Austin TX, US
Kurt Raihn - Grass Valley CA, US

International Classification:

H03H 9/60
H03H 9/205
H03H 9/13
H03H 3/02

Abstract:

Acoustic filters devices and methods of making the same. A filter device includes two or more series resonators acoustically coupled along a shared acoustic track, and two or more shunt resonators electrically coupled to the two or more series resonators.

US Patent:

20220311421, Sep 29, 2022

Filed:

Dec 22, 2021

Appl. No.:

17/559881

Inventors:

- Austin TX, US
Kurt Raihn - Grass Valley CA, US

International Classification:

H03H 9/64
H03H 9/02
H03H 9/145
H03H 3/08

Abstract:

Acoustic filters devices and methods of making the same. A filter device includes a first plurality of acoustic resonators including at least one first series resonator and at least one first shunt resonator. The at least one first series resonator and the at least one first shunt resonator are acoustically coupled along a first shared acoustic track.

US Patent:

20230016610, Jan 19, 2023

Filed:

Sep 14, 2022

Appl. No.:

17/944764

Inventors:

- Austin TX, US
Kurt Raihn - Grass Valley CA, US

International Classification:

H03H 9/56
H03H 3/02
H03H 9/13

Abstract:

An acoustic filter device includes first and second series resonators and at least one shunt resonator, each shunt resonator electrically coupled to the first series resonator or the second series resonator. Each of the first and second series resonators includes respective first and second sub-resonators electrically connected in series, The first sub-resonators of the first and second series resonators are acoustically coupled along a first shared acoustic track. The second sub-resonators of the first and second series resonators are acoustically coupled along a second shared acoustic track.

US Patent:

20200387658, Dec 10, 2020

Filed:

Aug 21, 2020

Appl. No.:

16/999528

Inventors:

- Santa Barbara CA, US
Kurt Raihn - Santa Barbara CA, US

International Classification:

G06F 30/392
H03H 9/46
G06F 30/30
G06F 30/36

Abstract:

A method of designing a microwave filter using a computerized filter optimizer, comprises generating a filter circuit design in process (DIP) comprising a plurality of circuit elements having a plurality of resonant elements and one or more non-resonant elements, optimizing the DIP by inputting the DIP into the computerized filter optimizer, determining that one of the plurality of circuit elements in the DIP is insignificant, removing the one insignificant circuit element from the DIP, deriving a final filter circuit design from the DIP, and manufacturing the microwave filter based on the final filter circuit design.

US Patent:

20190303524, Oct 3, 2019

Filed:

Jun 17, 2019

Appl. No.:

16/443466

Inventors:

- Santa Barbara CA, US
Kurt Raihn - Santa Barbara CA, US

Assignee:

Resonant Inc. - Santa Barbara CA

International Classification:

G06F 17/50
H03H 9/46

Abstract:

A method of designing a microwave filter using a computerized filter optimizer, comprises generating a filter circuit design in process (DIP) comprising a plurality of circuit elements having a plurality of resonant elements and one or more non-resonant elements, optimizing the DIP by inputting the DIP into the computerized filter optimizer, determining that one of the plurality of circuit elements in the DIP is insignificant, removing the one insignificant circuit element from the DIP, deriving a final filter circuit design from the DIP, and manufacturing the microwave filter based on the final filter circuit design.