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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 |
| 7609131 |
Coupling filter device with specific coupling coefficient |
Oct. 27, 2009 |
| 7595687 |
Apparatus and method for reducing EMI generated by a power conversion device |
Sep. 29, 2009 |
| 7589605 |
Method and apparatus to provide compensation for parasitic inductance of multiple capacitors |
Sep. 15, 2009 |
| 7548137 |
Generalized cancellation of inductor winding capacitance |
Jun. 16, 2009 |
| 7511596 |
Dual bandpass filter having serial configuration of coupled-line filters |
Mar. 31, 2009 |
| 7453331 |
Polyphase line filter |
Nov. 18, 2008 |
| 7432782 |
Signal splitter |
Oct. 7, 2008 |
| 7385466 |
Differential transmission circuit and common mode choke coil |
Jun. 10, 2008 |
| 7242269 |
Filter having parasitic inductance cancellation |
Jul. 10, 2007 |
| 7199682 |
Distributed balun with a non-unity impedance ratio |
Apr. 3, 2007 |
| 7129803 |
Tuned transformer balun circuit and applications thereof |
Oct. 31, 2006 |
| 7123117 |
LAN magnetic interface circuit |
Oct. 17, 2006 |
| 7102464 |
Switched transformer for adjusting power amplifier loading |
Sep. 5, 2006 |
| 7078987 |
Narrow band-pass tuned resonator filter topologies having high selectivity, low insertion loss and improved out-of-band rejection over extended frequency ranges |
Jul. 18, 2006 |
| 7002434 |
Lumped-element transmission line in multi-layered substrate |
Feb. 21, 2006 |
| 6998938 |
Lumped-element low-pass filter in multi-layered substrate |
Feb. 14, 2006 |
| 6970057 |
Lowpass filter formed in a multi-layer ceramic |
Nov. 29, 2005 |
| 6952142 |
Frequency-selective balun transformer |
Oct. 4, 2005 |
| 6937115 |
Filter having parasitic inductance cancellation |
Aug. 30, 2005 |
| 6924713 |
High bandwidth magnetically isolated signal transmission circuit |
Aug. 2, 2005 |
| 6911797 |
Multi-axes industrial processing machine |
Jun. 28, 2005 |
| 6871059 |
Passive balun FET mixer |
Mar. 22, 2005 |
| 6809609 |
Device for preventing mixing of extrinsic noise and protector |
Oct. 26, 2004 |
| 6788166 |
Harmonic wave distortion suppressor |
Sep. 7, 2004 |
| 6788169 |
Amplifier composite triple beat (CTB) reduction by phase filtering |
Sep. 7, 2004 |
| 6762655 |
Circuit arrangement |
Jul. 13, 2004 |
| 6759926 |
LC filter circuit, monolithic LC composite component, multiplexer, and radio communication device |
Jul. 6, 2004 |
| 6714101 |
Noise reduction filter array |
Mar. 30, 2004 |
| 6711385 |
Coupler for wireless communications |
Mar. 23, 2004 |
| 6675005 |
Printed single balanced downconverter mixer |
Jan. 6, 2004 |
| 6661312 |
Multilayer filter array |
Dec. 9, 2003 |
| 6624724 |
Dual band common-mode noise line filter |
Sep. 23, 2003 |
| 6600910 |
Radio frequency transformer and its use |
Jul. 29, 2003 |
| 6587020 |
Multilayer LC composite component with ground patterns having corresponding extended and open portions |
Jul. 1, 2003 |
| 6559733 |
Reducing effects of electrical impedance |
May. 6, 2003 |
| 6552630 |
Bi-directional low-pass filter for use at user end or office end in communication network |
Apr. 22, 2003 |
| 6549097 |
Electrical resonator with a ribbon loop and variable capacitors formed at the parallel ends |
Apr. 15, 2003 |
| 6542053 |
Multilayered LC composite with via hole inductors having a connecting pattern forming a group capacitor |
Apr. 1, 2003 |
| 6538532 |
Magnetically coupled series-tuned air coil resonators having very low C/L ratios to achieve higher QL, lower insertion loss and improved out-of-band rejection |
Mar. 25, 2003 |
| 6529102 |
LC filter circuit and laminated type LC filter |
Mar. 4, 2003 |
| 6529101 |
Multilayered LC filter |
Mar. 4, 2003 |
| 6504451 |
Multi-layered LC composite with a connecting pattern capacitively coupling inductors to ground |
Jan. 7, 2003 |
| 6476689 |
LC filter with capacitor electrode plate not interfering with flux of two coils |
Nov. 5, 2002 |
| 6429753 |
High-frequency filter, complex electronic component using the same, and portable radio apparatus using the same |
Aug. 6, 2002 |
| 6414568 |
Interdigitated, laminated LC bandpass filter with different length electrodes |
Jul. 2, 2002 |
| 6295356 |
Power feed for network devices |
Sep. 25, 2001 |
| 6281767 |
Reconstruction filter for eliminating the switching residue in a switched system |
Aug. 28, 2001 |
| 6281777 |
Inductive component for the attenuation of common mode and push-pull interference |
Aug. 28, 2001 |
| 6239672 |
Wall mount filter for a digital subscriber line (xDSL) network and methods of installation and manufacture |
May. 29, 2001 |
| 6222427 |
Inductor built-in electronic parts using via holes |
Apr. 24, 2001 |
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