H - Electricity – 03 – H
Patent
H - Electricity
03
H
H03H 9/25 (2006.01) H03H 9/64 (2006.01)
Patent
CA 2178438
A cascaded surface wave device filter comprises two 2-pole surface wave device filters connected in cascade. The 2-pole filters each provide a balun function between balanced and unbalanced signal connections, and have either their unbalanced or their balanced signal connections interconnected in the cascade to reduce electro-magnetic feedthrough and improve spurious mode suppression. The 2-pole filters are conveniently longitudinally coupled double mode surface wave resonators which are described, or transversely coupled double mode surface wave resonators. Higher order filters can be provided by connecting further 2-pole filters in the cascade. The cascaded filter is particularly useful for filtering at radio and intermediate frequencies in cellular radio equipment.
Chen Zhuo-Hui
Dai Ji-Dong
Saw John Choo Beng
Xu Yufeng
Chen Zhuo-Hui
Dai Ji-Dong
Millard Allan P.
Nortel Networks Limited
Saw John Choo Beng
LandOfFree
Cascaded surface wave device filters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cascaded surface wave device filters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cascaded surface wave device filters will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1760360