Media Alert: NI AWR Design Environment Application Note “How to Improve Second-harmonic Passband Rejection Microstrip Side-coupled Filters” Now Available

EL SEGUNDO, Calif. – March 2, 2015


NI (formerly AWR Corporation) released a new NI AWR Design Environment application note, “ Improving the Second-harmonic Pass Band Rejection of Microstrip Side-coupled Filters.” Because of their low cost and easy manufacturability, side-coupled filters constructed from printed-circuit board (PCB)-based microstrip are widely used throughout the industry. One of the main drawbacks of the side-coupled filter is its limited rejection of the second harmonic. This application note demonstrates a solution that mitigates this problem through the introduction of notch-filter elements that improve the overall rejection of side-coupled filters at the second harmonic without significantly affecting the filter passband behavior.


The application note (English, Japanese and Chinese versions available) can be viewed and downloaded at



AWR, National Instruments, NI and are trademarks of National Instruments. Other product and company names listed are trademarks or trade names of their respective companies. 



     Sherry Hess

     Vice President of Marketing, AWR Group, NI

     (310) 726-3000

     Email Contact


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