LOW LOSS LIMITS IN MATERIALS AT THE NEAR MILLIMETER RANGE

摘要

The theoretical estimations have been obtained for the absolute values of the dieleotrio loss lower limits due to the free carriers of charge and crystal lattice mechanisms in speoifio materials, Where the least loss are expected: in diamond-type crystals (Ge, Si and diamond), cubic crystals of A ~ⅢB~Ⅴ type and some hexagonal crystals.