RF/Microwave Delivery Systems for Therapeutic Applications - RF/Microwave Interaction with Biological Tissues - page 248

(a)

(b)

(c)

FIGURE 6.1 Antenna configuration: ( a ) gap antenna; ( b ) whip antenna; ( c ) helical

antenna.

TABLE 6.2 Basic Characteristics of Semirigid Coaxial Cables By Two Manufacturers

Specifications Micro-Coax Precision Tube

Type no. UT 20-M CA50020

Outer conductor diameter 0.023 in. (0.584 mm) 0.020 in. (0.508 mm)

Dielectric diameter 0.015 in. (0.381 mm) 0.015 in. (0.381 mm)

Center conductor diameter 0.0045 in. (0.1143 mm) 0.0044 in. (0.112 mm)

Attenuation at 2.4 GHz 1.13 dB/ft (3.71 dB/m) 1.33 dB/ft(4.36 dB/m)

Rated power at 2.4 GHz 12.5 W at 20°C 1.8 W at 40°C

Comments Ultra malleable, stiff; Weak, easily kinked;

dielectric core is a push with extreme

loose fit-can slip caution