SWRU048
Page 5 of 30
quarter wavelength (
λ
/4). A reduction of the antenna height (H) will in general decrease the
antenna bandwidth. Please see figure 3 for the antenna dimensions.
Figure 2: Antenna dimensions
The height of the antenna is defined as the distance from the ground plane to the parallel
section, and the length is from the end of the antenna parallel section to the feed point.
Length: L = (26.19 mm – 9.19 mm + 1.22 mm x ½) = 17.61 mm
Height: H = (6.17 mm + 0.97 mm - 1.19 mm x ½) = 6.55 mm
Quarter wavelength:
λ
/4 = (L + H) = 17.61 mm + 6.55 mm = 24.16 mm
The physical size of the antenna is decreased somewhat compared to the theoretical length,
(
λ
= c/4*f = 3x10
8
/ 4x2.45x10
9
) = 30.61 mm
Summary of Contents for Chipcon CC2400DBK
Page 1: ...SWRU048 Page 1 of 30 User Manual Rev 1 2 CC2400DBK Demonstration Board Kit...
Page 12: ...SWRU048 Page 12 of 30 Layer 1 Layer 2 Layer 3 Layer 4 Figure 5 CC2400DB PCB layout...
Page 13: ...SWRU048 Page 13 of 30 Top Assembly Bottom Assembly Figure 6 CC2400DB PCB layout silkscreen...
Page 14: ...SWRU048 Page 14 of 30 Schematic Figure 7 CC2400DB schematic page 1...
Page 15: ...SWRU048 Page 15 of 30 Figure 8 CC2400DB schematic page 2...
Page 16: ...SWRU048 Page 16 of 30 Figure 9 CC2400DB schematic page 3...
Page 17: ...SWRU048 Page 17 of 30 Figure 10 CC2400DB schematic page 4...
Page 18: ...SWRU048 Page 18 of 30 Figure 11 CC2400DB schematic page 5...