Resources Contact Us Home
Ladder type piezoelectric filter

Image Number 7 for United States Patent #7619494.

In a ladder-type piezoelectric filter, the attenuation in the stop bands on a low frequency side and a high frequency side are increased while the pass band is widened. The ladder-type piezoelectric filter is made up by alternately connecting parallel arms and series arms. The parallel arms are respectively made up by serially connecting parallel resonators and LC element networks, and the series arms are respectively made up of series resonators. The LC element networks are respectively made up so as to be inductive in resonant frequencies of the serially connected parallel resonators. Further, the LC element networks include capacitors which contribute to formation of a new series resonant point in the stop band on the high frequency side.

  Recently Added Patents
Jacket liner
Pattern generation method and pattern generation program
Image processing apparatus and image processing method
Magnetic circuit and speaker using same
Compression molding method and reinforced thermoplastic parts molded thereby
Efficient forward ranking in a search engine
  Randomly Featured Patents
Pharmaceutical compositions containing a fluoroquinolone antibiotic drug and xanthan gum
Method and system for horizontal coil condensate disposal
Electromagnetically operable friction-disk clutch
Combined tissue clamping and suturing instrument
Facsimile mail system and method for controlling the same
Soybean cultivar 05RM300035
Emptying device
Cross-country ski binding
Apparatus for heating and bending glass sheets
Dynamic sortation of items in a containerization system