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Class Information
Number: 333/177
Name: Wave transmission lines and networks > Coupling networks > Frequency domain filters utilizing only lumped parameters > Transformer coupled
Description: Subject matter which include a mutual inductance link of the lumped type between the input and output of the filter.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6222427 |
Inductor built-in electronic parts using via holes |
Apr. 24, 2001 |
| 6215374 |
Magnetically coupled resonators for achieving low cost narrow band pass filters having high selectivity, low insertion loss and improved out-of-band rejection |
Apr. 10, 2001 |
| 6188298 |
Winding transient suppression technique |
Feb. 13, 2001 |
| 6188750 |
Impedance blocking filter circuit |
Feb. 13, 2001 |
| 6177849 |
Non-saturating, flux cancelling diplex filter for power line communications |
Jan. 23, 2001 |
| 6177848 |
High frequency snubber for transformers |
Jan. 23, 2001 |
| 6170154 |
Printed lumped element stripline circuit structure and method |
Jan. 9, 2001 |
| 6160851 |
Line driver calibration circuit |
Dec. 12, 2000 |
| 6137379 |
Universal noise controller |
Oct. 24, 2000 |
| 6121696 |
EMI preventive AC line filter |
Sep. 19, 2000 |
| 6097262 |
Transmission line impedance matching apparatus |
Aug. 1, 2000 |
| 6091779 |
Process for the wireless transmitting of energy and data |
Jul. 18, 2000 |
| 6075425 |
Damping filter arrangement for converters having a regulated voltage source and sinusoidal phase currents |
Jun. 13, 2000 |
| 6069541 |
High-frequency filter, with an inductor for forming a pole, complex electronic component using the same, and portable radio apparatus using the same |
May. 30, 2000 |
| 6064285 |
Printed circuit board helical resonator and filter apparatus |
May. 16, 2000 |
| 6049258 |
Isolation and signal filter transformer |
Apr. 11, 2000 |
| 6043569 |
Zero phase sequence current filter apparatus and method for connection to the load end of six or four-wire branch circuits |
Mar. 28, 2000 |
| 6014409 |
Passive analog filter for network interface |
Jan. 11, 2000 |
| 5949304 |
Multilayer ceramic package with floating element to couple transmission lines |
Sep. 7, 1999 |
| 5939965 |
Inductive component with variable magnetic performance |
Aug. 17, 1999 |
| 5929722 |
Low-pass filter laminated with a power detection coil |
Jul. 27, 1999 |
| 5864267 |
Electronic-tuning type radio-frequency tuning circuit |
Jan. 26, 1999 |
| 5838214 |
Unitary packaging system for a capacitor and inductor |
Nov. 17, 1998 |
| 5825259 |
Electromagnetic interference isolator with common mode choke |
Oct. 20, 1998 |
| 5821832 |
Signal transmission circuit |
Oct. 13, 1998 |
| 5814901 |
Harmonic blocking at source transformer |
Sep. 29, 1998 |
| 5812597 |
Circuit for preventing base line wander of digital signals in a network receiver |
Sep. 22, 1998 |
| 5801602 |
Isolation and signal filter transformer |
Sep. 1, 1998 |
| 5717685 |
Transformer coupler for communication over various lines |
Feb. 10, 1998 |
| 5699025 |
Thin film chip-type filter with an external electrode formed on an adhesion layer |
Dec. 16, 1997 |
| 5696471 |
Inductive coupled filter with electrically neutral holes between solid spiral inductors |
Dec. 9, 1997 |
| 5659273 |
Line termination for multiple differential transmission lines |
Aug. 19, 1997 |
| 5619080 |
Line filter for reducing AC harmonics |
Apr. 8, 1997 |
| 5565713 |
High-voltage filter |
Oct. 15, 1996 |
| 5559396 |
Ballast filtering scheme for reduced harmonic distortion |
Sep. 24, 1996 |
| 5528630 |
Coupler for communication systems which utilize more than one frequency band |
Jun. 18, 1996 |
| 5528205 |
Integrated electromagnetic interference filter |
Jun. 18, 1996 |
| 5523729 |
Multilayer band pass filter with a zero point forming capacitor |
Jun. 4, 1996 |
| 5519581 |
Mounting of toroidal inductors |
May. 21, 1996 |
| 5515399 |
Apparatus and method for wireless data and energy transmission |
May. 7, 1996 |
| 5430895 |
Transformer circuit having microstrips disposed on a multilayer printed circuit board |
Jul. 4, 1995 |
| 5359315 |
Method of forming a three-layer structural spiral inductor |
Oct. 25, 1994 |
| 5309120 |
RF high power, high frequency, non-integer turns ratio bandpass auto-transformer and method |
May. 3, 1994 |
| 5227745 |
Line filter assembly |
Jul. 13, 1993 |
| 5202584 |
High energy dissipation harmonic filter reactor |
Apr. 13, 1993 |
| 5155457 |
Line filter assembly |
Oct. 13, 1992 |
| 5132649 |
Signal input device |
Jul. 21, 1992 |
| 5132647 |
Band pass and elimination filter network for electric signals with inputs symmetric to a specific reference level |
Jul. 21, 1992 |
| 5109206 |
Balanced low-pass common mode filter |
Apr. 28, 1992 |
| 5097236 |
Parallel connection multi-stage band-pass filter |
Mar. 17, 1992 |
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