Efficiency and gain of slot antennas and arrays on thick dielectric substrates for millimeter-wave applications: a unified approach
Tóm tắt
A unified approach for representing the surface-wave fields and for computing the corresponding radiation efficiencies from arbitrarily shaped slot-type antennas on thick dielectric substrates at millimeter-wave (mm-wave) frequencies is presented. In this approach, two different representations of the surface-wave fields, i.e., the one based on the idea that the surface-wave power can be associated with a substrate radiation pattern and the other based on the cylindrical wave expansion, are linked together in a unified way. The developed theory is then applied for investigating the surface wave characteristics of printed twin offset slots and uniform linear slot arrays. Based on the developed theory, new insight into the mechanism with which surface-wave power is coupled by the slot pair is presented. Subsequently, the optimum number of elements and corresponding interelement spacing for linear, uniformly excited, slot dipole arrays is explored for achieving maximum radiation efficiency and gain. In order to provide guidance on practical mm-wave integrated slot antenna array design, supportive numerical results are presented for Substrates of dielectric constant /spl epsi//sub r/ = 4.0 and /spl epsi//sub r/ = 12.0.
Từ khóa
#Slot antennas #Antenna arrays #Dielectric substrates #Surface waves #Surface treatment #Dipole antennas #Coplanar waveguides #Frequency #Linear antenna arrays #Patch antennasTài liệu tham khảo
marcuvitz, 1951, Waveguide Handbook, 29
stratton, 1941, Electromagnetic Theory, 372
abramowitz, 1968, Handbook of Mathematical Functions United States, 363
harrington, 1961, Time-Harmonic Electromagnetic Fields, 231
10.1007/BF02096364
10.1109/APS.1999.789300
qiu, 2002, high-gain meander-less slot arrays on electrically thick substrates at millimeter-wave frequencies, IEEE Trans Microwave Theory and Techniques, 50, 517, 10.1109/22.982231
10.1007/BF01009570
10.1007/BF01010768
10.1109/22.681203
10.1109/8.511818
10.1109/8.244643
10.1109/8.56959
rutledge, 1983, integrated circuit antennas, Infrared and Millimeter Waves, 10, 1
10.1109/TMTT.1983.1131544
10.1109/8.558666