Special stubĬircuits can help increase this otherwise narrow bandwidth which we Matched, thus they will only work at a specific frequency. To accomplish is to cancel out the reactive component of the load to be The stub can simply be fabricated onto the Because of this, one of the primary places anĮngineer will encounter stub tuners is in printed circuit boards using They only require more of the same material used to make the

Stub tuners are simple to implement and cheap to manufacture: Stub tuners from Pozar's Microwave Design: The image below depicts the basic layout of This occurs by placing a specific length of stub a specificĭistance away from the load. Open circuit, or short circuit configuration to match the line to the Of transmission line to the existing length in either series, shunt, Of these criteria stub tuning is simply the process of adding a length Stub tuning is one method that satisfies both Will have to balance the best possible solution with the cheapest Leads to the inevitable and age-old dilemma of the engineer where we This can be accomplished using a variety of different methods andĬomponents, each suited towards specific applications. This of course Ultimately will give the best performance out of any given RF circuit. Load this minimizes signal loss, maximizes power handling, and Q9.RF engineering, it is critical to have a waveguide line matched to its Q8 Where does on Smith chart Γ-circles are centered?Īt the Origin At the center and vary over the Γ r axis At the center and vary over the Γ i axis none of the above Q7.Maximum value of |Γ| on Smith chart is given by: Q6.Can a Smith chart be used for impedance calculation on a lossy transmission line? Q5.The point of intersection of resistance circle and reactance circle is known as, Magnitude of standing wave ratio Inverse of standing wave ratio Magnitude of voltage reflection-coefficient Length of transmission line Q4.Radius of VSWR circle on Smith chart represents,

Q3.Where is the point representing an open-circuit on a Smith impedance chart?Įxtreme left on Γ r axis Extreme right on Γ r axis On the top on Γ i axis On the bottom on Γ i axis Q2.Where is the point representing a short-circuit on a Smith impedance chart? Q1.The point representing a matched load on a Smith chart is located at, Quiz (Pre) is based on the theory of the experiment, student should have this much knowledge before performing the experiment and Quiz (Post) is based on the exe file, this will help the user to check the level of his understanding. This includes two sections: Quiz (Pre) and Quiz (Post).

Short circuit on smith chart