A DESIGN OF COMPACT WIDEBAND NEGATIVE GROUP DELAY NETWORK USING CROSS COUPLING

作者：Chaudhary Girdhari; Jeong Yongchae^*

来源：Microwave and Optical Technology Letters, 2014, 56(11): 2495-2497.

DOI：10.1002/mop.28627

• cross coupling
• negative group delay
• wideband

This article presents a novel approach to the design of a compact wideband negative group delay (NGD) network using cross coupling between open stubs. The NGD time can be controlled by external series resistors, whereas the NGD bandwidth can be controlled by the coupling coefficient between open stubs. To verify the design concept, the NGD network operating at center frequency of 1.96 GHz was designed and fabricated. From the measurement results, a maximum achievable NGD time of 21.160.2 ns was obtained over a 410 MHz BW with a maximum signal attenuation of 29.23 dB.

• 出版日期2014-11