Articles
Specifying Filters: Get It Right The First Time!
March 1, 2010
•Application Note: Specifying Filters: Get It Right The First Time!
By Anatech Electronics Inc.
Electromechanical filters for RF and microwave applications have long been a comparatively simple solution for eliminating interference. However, specifying filters effectively requires some basic knowledge about key performance parameters, and how they can conflict or will cause the cost, size, or other important factor to become unacceptable.
For example, when specifying a bandpass filter, combining low insertion loss with very high rejection and a narrow passband bandwidth increases the complexity, size, and cost of the filter. A VSWR of 1.5:1 is typically acceptable for most applications. Lower values are achievable, but if they are not necessary, why incur the expense that achieving higher performance in this area will entail? The information in this document is designed to help solve problems like this early in the specification process.
Click Here To Download:•Application Note: Specifying Filters: Get It Right The First Time!
