For transmission-line load matching over a range of frequencies, it is

1.	For transmission-line load matching over a range of frequencies, it is best to use a
A.	Balun
B.	Broadband directional coupler
C.	Double stub
D.	Single stub of adjustable position
Answer» D. Single stub of adjustable position

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For transmission-line load matching over a range of frequencies, it is best to use a

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