Patent ID: 8809683
Filing Date: 2014-08-19
Classification: H01B,H01Q

Abstract:
1. A leaky coaxial cable comprising: an inner conductor member extending in an axis direction, configured to propagate a signal; an insulator member covering the inner conductor member; a first outer conductor member having conductor wires on a circumference surface of the insulator member with a shielding density so as to leak a part of the signal to an outside thereof; and a plurality of second outer conductor members contacting the first outer conductor member and being arranged with a constant pitch in the axis direction, configured to shield the signal; wherein, in the axis direction, each electrical length of the second outer conductor members is the same as an electrical length between adjacent second outer conductor members; and the pitch is in a range of {1/(1+0.766ν)} times to {3/(1+ν)}times of a propagation wavelength of the signal in the inner conductor member, where V is a wavelength shortening coefficient of the propagation wavelength to a free-space wavelength of the signal.