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Class Information
Number: 333/223
Name: Wave transmission lines and networks > Resonators (distributed parameter type) > Coaxial or shielded > With tuning
Description: Subject matter wherein the resonator has means which can be adjusted to resonate or operate at a specified frequency.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7612637 |
Built-in cross-coupled dielectric filter |
Nov. 3, 2009 |
| 7463121 |
Temperature compensating tunable cavity filter |
Dec. 9, 2008 |
| 7352264 |
Electronically tunable dielectric resonator circuits |
Apr. 1, 2008 |
| 7327210 |
Band agile filter |
Feb. 5, 2008 |
| 7224248 |
Ceramic loaded temperature compensating tunable cavity filter |
May. 29, 2007 |
| 6922120 |
Dielectric filter, duplexer dielectric filter, and method for manufacturing the same |
Jul. 26, 2005 |
| 6801104 |
Electronically tunable combline filters tuned by tunable dielectric capacitors |
Oct. 5, 2004 |
| 6636132 |
Dielectric filter |
Oct. 21, 2003 |
| 6617945 |
Filter with an electrically tunable resonator |
Sep. 9, 2003 |
| 6518858 |
Resonator, filter, duplexer, and communication apparatus |
Feb. 11, 2003 |
| 6466111 |
Coupler for resonant cavity |
Oct. 15, 2002 |
| 6362707 |
Easily tunable dielectrically loaded resonators |
Mar. 26, 2002 |
| 6320483 |
Multi surface coupled coaxial resonator |
Nov. 20, 2001 |
| 6215376 |
Filter construction and oscillator for frequencies of several gigahertz |
Apr. 10, 2001 |
| 6198363 |
Filter and tuning element |
Mar. 6, 2001 |
| 6198364 |
Resonator filter having a frequency regulating means with at least one turn |
Mar. 6, 2001 |
| 6169464 |
Dielectric filter |
Jan. 2, 2001 |
| 6111482 |
Dielectric variable-frequency filter having a variable capacitance connected to a resonator |
Aug. 29, 2000 |
| 6078230 |
Characteristic adjusting method for dielectric filter using a grinding tool |
Jun. 20, 2000 |
| 6034579 |
Dielectric filter of the band elimination type |
Mar. 7, 2000 |
| 5878333 |
Tuner with coaxial resonator trimmer |
Mar. 2, 1999 |
| 5828275 |
Dielectric filter including an adjusted inner electrode and a coupling electrode being level with an open end of a molded member |
Oct. 27, 1998 |
| 5815056 |
Dielectric resonator having an elongated non-conductive resonator gaps and manufacturing method thereof |
Sep. 29, 1998 |
| 5793269 |
Stepwise regulated filter having a multiple-step switch |
Aug. 11, 1998 |
| 5621367 |
Coaxial resonator comprising slits formed in the inner conductor |
Apr. 15, 1997 |
| 5510756 |
Strip transmission line having a tunable electric length |
Apr. 23, 1996 |
| 5495215 |
Coaxial resonator filter with variable reactance circuitry for adjusting bandwidth |
Feb. 27, 1996 |
| 5475350 |
Frequency tunable resonator including a varactor |
Dec. 12, 1995 |
| 5420554 |
Method and apparatus for adjusting a resonant frequency of a transmission line resonator assembly |
May. 30, 1995 |
| 5304968 |
Temperature compensated resonator |
Apr. 19, 1994 |
| 5298873 |
Adjustable resonator arrangement |
Mar. 29, 1994 |
| 5218330 |
Apparatus and method for easily adjusting the resonant frequency of a dielectric TEM resonator |
Jun. 8, 1993 |
| 5208568 |
Method for producing dielectric resonator apparatus having metallized mesa |
May. 4, 1993 |
| 5175520 |
High frequency coaxial resonator |
Dec. 29, 1992 |
| 5172085 |
Coaxial resonator with distributed tuning capacity |
Dec. 15, 1992 |
| 5130673 |
Varactor tuned coax resonator |
Jul. 14, 1992 |
| 5045825 |
Coupling port for multiple capacitor, distributed inductor resonator |
Sep. 3, 1991 |
| 5023579 |
Integrated bandpass/lowpass filter |
Jun. 11, 1991 |
| 5004992 |
Multi-resonator ceramic filter and method for tuning and adjusting the resonators thereof |
Apr. 2, 1991 |
| 4992737 |
Sample head for NMR tomography |
Feb. 12, 1991 |
| 4987393 |
Dielectric filter of solid mold type with frequency adjustment electrodes |
Jan. 22, 1991 |
| 4983938 |
Band-stop filter |
Jan. 8, 1991 |
| 4965537 |
Tuneless monolithic ceramic filter manufactured by using an art-work mask process |
Oct. 23, 1990 |
| 4906955 |
Dielectric filter |
Mar. 6, 1990 |
| 4901044 |
Distributed-constant filter |
Feb. 13, 1990 |
| 4857871 |
Magnetic field-tunable filter with plural section housing and method of making the same |
Aug. 15, 1989 |
| 4855693 |
Dielectric filter and a method of manufacture thereof |
Aug. 8, 1989 |
| 4837534 |
Ceramic block filter with bidirectional tuning |
Jun. 6, 1989 |
| 4827230 |
Magnet design for ferromagnetic resonators |
May. 2, 1989 |
| 4800348 |
Adjustable electronic filter and method of tuning same |
Jan. 24, 1989 |
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