 
 <prompt> Wetin dem dey call wooden stick wey head dey made up of phosphorus? Given di last question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```Instead, e dey often dey want make antenna wey e impedance no dey change too much over certain bandwidth. E come be say the amount of reactance wey dem see for the terminals of a resonant antenna when the frequency dey shift, like say, by 5%, e dey depend well well on the diameter of the conductor wey dem use. A long thin wire wey dem use as half-wave dipole (or quarter wave monopole) go get reactance wey dey significantly pass the resistive impedance wey e get for resonance, wey go cause poor match and generally unacceptable performance. Making the element using tube wey get diameter wey be like 1/50 of e length, go result in reactance for this changed frequency wey no go too much, and e go cause less serious mismatch wey go only small-small spoil the antenna's net performance. So, dem dey typically use thick tubes for the solid elements of such antennas, including Yagi-Uda arrays.``` 