User's Manual

DFZM-TS2xx
Data Sheet Sheet 31 of 37 AUG 22, 2013
Proprietary Information and Specifications are Subject to Change
Figure 6-6: Recommended keep out area to accommodate both DFZM-TS221 and DFZM-TS211
Notes:
1. All Dimensions are in mm. Tolerances shall be ±0.10 mm.
2. Absolutely no metal trace or ground layer underneath this area.
3. It is recommended not to run circuit traces underneath the module.
4. In performing SMT or manual soldering of the module to the base board, please align the two row of pins.
In addition to the guidelines in Figure 6-6, note the following suggestions:
DFZM-TS22x and DFZM-TS21x
• External Bypass capacitors for all module supplies should be as close as possible to the module pins.
• Never place the antenna very close to metallic objects.
• The external dipole antennas need a reasonable ground plane area for antenna efficiency.
DFZM-TS221; DFZM-TS211 onboard chip antenna specific
 The onboard chip antenna keep out area, as shown in Figure 6-5, must be adhered to. In addition it is
recommended to have clearance above and below the PCB trace antenna (Figure 6-7) for optimal range
performance.