2.7.2.1 External Antennas

The WILCS02UE Module has an ultra-small surface mount U.FL connector for an external antenna connection. The choice of antenna is limited to the antenna types that the module is tested and approved for.

The WILCS02UE Module is approved to use with the antennas listed in the following table. It is permissible to use a different antenna provided it is the same antenna type, has the same antenna gain (equal or less than) and similar in-band and out-of-band characteristics are present (refer to the antenna specification sheet for cutoff frequencies).

If other antenna types are used, the Original Equipment Manufacturer (OEM) installer must conduct the necessary assessments and authorize the antenna with the respective regulatory agencies and ensure compliance.

Table 2-4. WILCS02 Module Approved External Antenna List with Antenna Gain
Antenna No.	Part Number	Manufacturer	Antenna Gain (dBi)	Antenna Type	Regulatory Certification
Antenna No.	Part Number	Manufacturer	Antenna Gain (dBi)	Antenna Type	FCC⁽²⁾⁽³⁾/ISED⁽²⁾⁽³⁾/CE/NCC/KCC/MIC/SRRC⁽⁶⁾/ANATEL⁽⁷⁾
1	WXE2400	TE Connectivity/Laird External Antennas	3	Dipole	x
2	ANT-2.4-CW-RCL-RPS	TE Connectivity/Linx Technologies	2.3	Dipole	x
3	RFA-02-C2M2-D034	Alead	2	Dipole	x
4	RFA-02-L2H1	Aristotle	2	Dipole	x
5	RFA-02-C2H1-D034	Alead	2	Dipole	x
6	RFA-02-D3	Aristotle	2	Dipole	x
7	RFDPA870920IMLB301⁽⁵⁾	Walsin	1.84	Dipole	x
8	RFDPA870920IMAB302⁽⁵⁾	Walsin	1.82	Dipole	x
9	RFDPA870920IMAB305	Walsin	1.82	Dipole	x
10	RFDPA870910IMAB308⁽⁵⁾	Walsin	2	Dipole	x
11	RFA-02-C2M2	Aristotle	2	Dipole	x
12	RN-SMA-S-RP⁽⁵⁾	Microchip	0.56	Dipole	x
13	W1049B030⁽⁵⁾	Pulse	2	Dipole	x
14	RN-SMA4-RP	Microchip	2.2	Dipole	x
Note: ‘x’ denotes the antennas covered under the certification. If the end product using the module is designed to have an antenna port that is accessible to the end user, a unique (non-standard) antenna connector (as permissible by FCC) must be used (for example, Reverse Polarity (RP))-SubMiniature version A Connector (SMA) socket). If an RF coaxial cable is used between the module RF output and the enclosure, a unique (non-standard) antenna connector must be used in the enclosure wall to interface with the antenna. Contact the antenna vendor for detailed antenna specifications to review the suitability to the end product operating environment and to identify alternatives. If any of these antennas are used, an additional post-calibration step is required on the customer’s application board. For more details, refer to the WILCS02 Module External Antenna Calibration Guide (DS50003751). It is strongly recommended for customers to use an antenna from the list. If a new antenna is chosen, its peak gain should be ≤3 dBi. It is strongly recommended for customers to use an antenna from the list. If a new antenna of different type or higher gain is chosen for use, the customer needs to confirm their end product's regulatory compliance with a certification lab and accept any unknown risk.