Inorder to overcome the drawback of double-stub mathching technique one can use three stubs seperated by
distance, instead of the two stubs (see Figure). One still uses only two adjacent stubs (B, C or C, D) at a time
for matching purpose. For those loads which have outside the forbidden region we use stub B and C as
used earlier and stub D is disconnected. The disconnection is not physical and is achieved by simply adjusting
the length of the stub to . The -stub appears open at the junction point D.
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