Frequency diplexer network for wireless parallel data transmission and ultrawideband systems utilizing manifold technique

A frequency diplexer network for ultrawideband radios focused on wireless parallel data transmission is presented. It has a combination of two bandpass filters utilizing manifold multiplexing technique. In the frequency band 6-9 GHz, two flat sub-bands at center frequencies 6.7 and 8.3 GHz have been achieved with respect to forward transmission, input reflection, and group delay. A maximum group delay variation of 0.6 ns was measured in the sub-bands. For low cost and simple circuit implementation, the design is implemented using the microstrip technology. (c) 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1869-1871, 2014