A Compact Frequency- and Power-Dividing Ratio-Tunable Quadrature Coupler

<div>(a) The electrical length variable transmission-line section. (b) Configuration of the novel tunable unit. (c) Final circuit of the proposed frequency and power-dividing ratio tunable quadrature coupler.</div>

International Journal of RF and Microwave Computer-Aided Engineering

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Figure 2

Figure 2: A Compact Frequency- and Power-Dividing Ratio-Tunable Quadrature Coupler 