Ceramic filter with integrated harmonic response suppression using orthogonally oriented low-pass filter
US5929721A · kind A · utility
49Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1996 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Aug 6, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/2136
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A ceramic filter (100) with integrated harmonic response suppression has a ceramic monolithic block filter having a predetermined passband defined by tuned resonators located between an input and an output (116); and at least one of a harmonic trap filter, a lowpass filter and a lowpass microstrip filter, each having an inductive and a capacitive component. This is achievable with a design which incorporates an integrated harmonic response suppression filter directly in or on the dielectric ceramic monolithic block. This can result in a substantial savings in space, cost, and part count in an electronic telecommunications device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.