A stunned grandmother received a £500 fine for ‘fly-tipping’ after leaving a neatly folded bag of clothes next to a full donation bin. Kind-hearted Susan Cowdery, 66, brought her old clothes ...

Due to the small distance to the mainboard, the radiation pattern of the dipole is deformed caused by the unbalanced currents on the two arms. To solve this problem, a capacitive balun is integrated ...