This paper presents a planar filtering magic-T with a simple structure. It consists of four half-wavelength microstrip resonators with one loaded with a shorted microstrip stub at its central location. The planar filtering magic-T has four ports, which all adopt a tapped line structure. Its novelty lies in the simple structure. Compared with previous works in the literature, its inter-resonator coupling zones are apart away and have no influence on each other, which means a simple design. Furthermore, a different-properties coupling is not needed, and its filtering response can be easily extended to the high-order case. The operational mechanism and design method are introduced in details. A planar filtering magic-T with center frequency of 920 MHz was designed and fabricated. The measured results show that, at the center frequency, the return loss (S 11 /S 44 ) is less than 20/12 dB; an isolation degree of 25 dB (S 41 ) can be observed; the insertion losses of the difference port (S 21 /S 31 ) and sum port (S 24 /S 34 ) are 4.5/4.7 dB and 4.3/4.6 dB; the phase unbalance is 8 • /7 • (Σ/Δ). Totally, these results can verify the effectiveness of the proposed novel planar filtering magic-T.