USER MANUAL
TCM 515Z – 2.4 GHZ IEEE 802.15.4 Transceiver
© 2017 EnOcean | www.enocean.com
F-710-017, V1.0
TCM 515Z User Manual | v1.6 | September 2017 | Page 15/46
3.4.3
Dipole antenna requirements
The TCM 515Z has been certified for use with the dipole antenna S151AH-2450S from
Nearson or other antennas with similar parameters provided that:
The RF connector is a non-standard connector such as a RP-SMA-Female from John-
son/Cinch Connectivity Solutions (142-4701-801)
The pi low pass filter described in this section is used
In addition, the following layout guidelines have to be met:
The pi low pass filter is part of the modular approval and may not be changed
The bottom GND plane is implemented below the RF transmission line section of the
circuit to form a grounded coplanar waveguide (see Figure 8)
The ground planes have to be connected using multiple via along RF transmission
line as shown in Figure 7 and Figure 8
Table 6 at the end of this section lists dipole antennas that can be used instead of the
S151AH-2450S antenna stated previously as they are the same kind of antennas and have
the same or less gain.
Figure 7 below shows the layout that has been used. The section of the layout located with-
in the green frame has to remain unchanged for US / Canada modular approval usage.
Figure 7 – Reference layout for dipole antenna
