Full-Wave Analysis of Monopulse Dielectric Lens Antennas at W-band |
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Authors: | Z X Wang W B Dou |
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Affiliation: | (1) State Key Lab of Millimeter Waves, Southeast University, Nanjing, 210096, People’s Republic of China |
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Abstract: | Lens antenna is a good substitute for the Cassegrain antenna at millimeter-wave frequencies, especially at W-band. On one
hand, the antenna design, which is bulky and heavy at low frequencies, becomes compact and light-weighted at W-band. On the
other hand, without the blockage caused by the sub-reflector and the feed horns which are unavoidable in a Cassegrain antenna,
the lens antennas show better radiation characteristics. In this paper, several lens antennas fed by metal horns are analyzed
using a full-wave method-finite element method based on the weak form of the Helmholtz equation (WF-FEM). Numerical results
show that the lens antennas presented have low side lobe level (SLL), and good sum and difference performances. |
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