Differential surface acoustic wave filter having balanced...

H - Electricity – 03 – H

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

IPC codes

H03H 9/64 (2006.01)

Type

Patent

Patent number

CA 2371071

Description

A differential SAW filter having a cascaded structure includes an input SAW stage and an output SAW stage. The two SAW stages are configured so that the distance of travel of the surface acoustic waves from a single unbalanced input of the input stage to the dual balanced outputs of the output stage is electrically equidistant, thus resulting in a balanced differential output. The input stage includes a single unbalanced input coupled to a pair of outer IDTs, which both launch a surface acoustic wave to a single input stage inner IDT. The input stage inner IDT connects to the input IDT of the output SAW stage, which launches a surface acoustic wave to a pair of identical but inverted output IDTs that form the differential, balanced output signals.

L'invention concerne un filtre différentiel SAW présentant une structure en cascade et comprenant un étage SAW d'entrée et un étage SAW de sortie. Les deux étages SAW sont conçus de manière que les ondes acoustiques de surface issues d'une entrée dissymétrique simple de l'étage d'entrée et arrivant aux sorties symétriques doubles de l'étage de sortie parcourent une distance électriquement équivalente, d'où une sortie différentielle symétrique. L'étage d'entrée comprend une entrée dissymétrique simple couplée à une paire de transducteurs interdigitaux (IDT) externes, qui émettent tous deux une onde acoustique de surface vers un IDT interne d'étage d'entrée simple. L'IDT interne d'étage d'entrée est connecté à l'IDT d'entrée de l'étage SAW de sortie, qui émet une onde acoustique de surface vers une paire d'IDT de sortie identiques mais inversés, qui produisent à leur tour les signaux de sortie différentielle symétrique.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Differential surface acoustic wave filter having balanced... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Differential surface acoustic wave filter having balanced..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential surface acoustic wave filter having balanced... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2032767

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.