Scheduled System Maintenance:
On Monday, April 27th, IEEE Xplore will undergo scheduled maintenance from 1:00 PM - 3:00 PM ET (17:00 - 19:00 UTC). No interruption in service is anticipated.
By Topic

The Exact Design of Two Types of Single-Crystal, Wide-Band Crystal Filters

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
O'Meara, T. ; Hughes Aircraft Labs, Calif

It is shown how a low-pass ladder filter may be transformed to one of two equivalent band-pass, unbalanced, crystal filter structures with three poles and two transmission zeros. The first structure is the bridged T, previously discussed by Mason on an image parameter basis, and the second is a ladder filter. Either type may be designed on an exact insertion loss basis, and both types are equivalent if the Q's of the associated inductors are infinite. With finite inductor O's one may "exactly" compensate for inductor losses with the bridged T while one may only partly compensate for inductor losses with the ladder. In spite of this, it is shown that the ladder filter does not suffer too large a degradation in its insertion loss function with reasonable Q's. Practical constraints on both types of filters are discussed.

Published in:

Component Parts, IRE Transactions on  (Volume:5 ,  Issue: 1 )