Oblon, McClelland, Maier & Neustadt, L.L.P.
Multi-band array antenna
A multi-band array antenna comprises m first antenna elements operating in p frequency bands; n second antenna elements operating in q frequency bands; a Wilkinson power distributor; one or more filters; and one or more matching circuits. Here, m and n are positive integers satisfying m+n≥3 and any of m=n+1, n=m+1 and m=n; and p and q are positive integers satisfying p≥1, q≥2 and q>p. The m first antenna elements and the n second antenna elements are alternately arranged. The matching circuit performs impedance matching between the filter and the Wilkinson power distributor in a frequency band attenuated by the filter. A series-connection circuit portion is configured so that a branch portion of the power distributor becomes an open end in the attenuation frequency band.
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Yasunori Makoto Takashi
Suzuki Sumi Hosozawa