RF Cafe Software
About RF Cafe
1996 - 2022
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...
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EL SEGUNDO, California – 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 http://www.awrcorp.com/solutions/technical-papers.
AWR, the innovation leader in high-frequency electronic design automation (EDA) software, is a National Instruments Company. AWR’s software portfolio of EDA solutions dramatically reduces development time and cost for products employed in wireless, high-speed wired, broadband, aerospace and defense, and electro-optical applications. Learn more at www.awrcorp.com.
AWR, National Instruments, NI and ni.com are trademarks of National Instruments. Other product and company names listed are trademarks or trade names of their respective companies.
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Posted March 2, 2015