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Class Information
Number: 330/167
Name: Amplifiers > Interstage coupling > Transformer coupling > With additional impedance connected to "p" or "s" circuits
Description: Subject matter wherein additional impedance which may be inductive, capacitive or resistive is included in either the primary or secondary winding circuit of the transformer which couples the signal between the two cascaded amplifier devices.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6952159 |
Coupling device |
Oct. 4, 2005 |
| 5528630 |
Coupler for communication systems which utilize more than one frequency band |
Jun. 18, 1996 |
| 5404113 |
High efficiency power amplifier |
Apr. 4, 1995 |
| 5345189 |
Vectorial signal combiner for generating an amplitude modulated carrier by adding two phase modulated constant envelope carriers |
Sep. 6, 1994 |
| 4703283 |
Isolation amplifier with T-type modulator |
Oct. 27, 1987 |
| 4551686 |
Coupling filter, especially an input filter, for receivers of centralized ripple control systems |
Nov. 5, 1985 |
| 4105941 |
Driver for reactive load |
Aug. 8, 1978 |
| 4000473 |
Isolation amplifier |
Dec. 28, 1976 |
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