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Bortolo M Pradal

from Addison, IL
Age ~95
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Also known as:
Bortolo Bortolo Pradal, Mary R Pradal, Null Null
Related to:
Daniel S Warren, 26Rebecca L Warren, 29Antonella Warren, 60John Pradal, 62Larry Warren, 65Mary Pradal, 91
Connected to:
Angel Pradas, 79Antonio F Pradas, 80Kimberly A Pradd, 48John D Prade, 81Ashwini Pradeep, 36Poothathamby Pradeepkumar, 61Satya Pradeep, 59Shilpa Pradeep, 40Daniel E Pradel, 65Philippe B Pradel, 76

Bortolo Pradal Phones & Addresses

  • Addison, IL
  • Wood Dale, IL
  • Deer Park, IL
  • Bensenville, IL
  • 1061 Plum Tree Ln, Palatine, IL 60067 (847) 991-2673
  • Villa Park, IL
  • Melrose Park, IL
  • 1061 S Plum Tree Ln, Palatine, IL 60067 (847) 542-7301

Work

Position: Construction and Extraction Occupations

Education

Degree: Bachelor's degree or higher

Emails

p***[email protected]

Publications

Us Patents

Vhf Wide-Bandwidth Low Impedance Monolithic Crystal Filter Having Bridged Electrodes

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US Patent:
50756516, Dec 24, 1991
Filed:
Feb 15, 1990
Appl. No.:
7/480682
Inventors:
Bortolo M. Pradal - Palatine IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H03H 956
US Classification:
333187
Abstract:
The present invention relates to a monolithic crystal filter having a passband of at least 30 Khz and a center frequency greater than 120 Mhz. This filter includes a piezoelectric substrate, a plurality of input electrodes conductively coupled together via a thin coupling bar, a plurality of output electrodes conductively coupled together via another thin coupling bar, and at least one common electrode disposed opposite to the plurality of input and output electrodes. The input and output electrodes are aligned on the substrate such that they electroacoustically couple along a crystallographic axes thereof. Multicoupling is provided along another crystallographic axes via the plurality of conductively coupled input and output electrodes, respectively. As a result of multicoupling, fifth overtone mode operation is now possible. In addition, the coupling bars, connecting the respective input and output electrode pluralities in parallel, reduce the filter's overall impedance without disrupting spurious response design parameters.

Elliptic Baw Resonator Filter And Method Of Making The Same

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US Patent:
57606633, Jun 2, 1998
Filed:
Aug 23, 1996
Appl. No.:
8/701825
Inventors:
Bortolo M. Pradal - Palatine IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H03H 956
H03H 960
US Classification:
333187
Abstract:
An odd order N-pole, (N-1)/2 zero elliptic filter (300) is provided having (N-1)/2 BAW resonators (302 and 304). The first Bulk Acoustic Wave (BAW) resonator (302) operates at a first mode number and a first center frequency and the second BAW resonator (304) operates at a second mode number, and a first center frequency. Operating BAW resonators (302 and 304) at differing modes allows the unwanted passbands (201) of the first BAW resonator (302) to be attenuated by the stopband of the second BAW resonator (304) and vice versa.
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Bortolo M Pradal from Addison, IL, age ~95 Get Report