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Broad-wall connected microstrip-to-waveguide transition using a waveguide with large broad-walls is proposed. Maximum width of the waveguide where higher order mode dose not propagate is used. The dimension of the rectangular patch element is examined to have optimum width for wideband. Moreover, the distance from the edge of the broad-wall of the waveguide to via holes is also examined to have optimum...
A low-cost, low side-lobe Ku-band array of microstrip antennas, which is fed by waveguide, is presented in this paper. The 72 corner-fed square patches of the array are arranged in a 6-by-12 configuration. A novel waveguide to microstrip line transition with power divider is employed as a centre fed for the array in order to reduce the loss of the microstrip feed line. The gain of the array was measured...
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