| 摘要 |
a feedline (110) including an inner conductor (210), an outer conductor (260), and a dielectric material (240) disposed between the inner and outer conductors; a radiating section (140, 905) operably coupled to a distal portion of the feedline; and a sleeve portion (255; 951, 952) disposed at a distal portion of the radiating section and around at least a portion of the outer conductor, the sleeve portion configured to move relative to the outer conductor (260) to adjust a length of the radiating section. |
