Wideband Four-Way Filtering Power Divider with Sharp Selectivity and Wide Stopband Using Looped Coupled-Line Structures
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Publication Type:
- Journal Article
- IEEE Microwave and Wireless Components Letters, 2016, 26, (6), pp. 413-415
- Issue Date:
|Wideband_Four-Way_Filtering_Power_Divider_With_Sharp_Selectivity_and_Wide_Stopband_Using_Looped_Coupled-Line_Structures.pdf||Published version||1.07 MB|
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A compact wideband four-way filtering PD is presented. The structure of the proposed device includes a pair of looped coupled-line structures to provide the needed power division to four output ports. Moreover, a pair of short-ended coupled-line stubs is used to introduce multiple transmission poles and transmission zeros for a sharp cut-off of the passband and high upper-stopband rejection. A detailed design procedure is shown to determine the initial design parameters. A prototype is designed, simulated and measured experimentally. The measured results show 56.5% bandwidth centered at 1.5 GHz with more than 15 dB upper-stopband rejection up to 4.15 GHz, more than 13 dB in-band isolation, and 15 dB return loss at all output ports.
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