u-blox ODIN-W260 System Integration Manual

u-blox ODIN-W260 System Integration Manual Manual pdf 15 page image

ODIN-W2 series - System Integration ManualUBX-14040040 - R03 Advance Information Design-inPage 15 of 332.2.1 Antenna connectorsThis section provides an overview of the different antenna options for the external antenna connectors. Themain antenna connector port is mandatory while the MIMO antenna connector is optional and used only inMIMO applications.Figure 4: ODIN-W260 with connectors for external antennasThe sections below list the antennas that are included in the radio type approvals of the module. For eachantenna, the "Approvals" field defines in which test reports the antenna is included. Definitions of the«Approvals» field are:• FCC - The antenna is included in the FCC test reports and thus approved for use in countries that acceptthe FCC radio approvals, primarily US.• IC - The antenna is included in the IC (Industrie Canada) test reports and thus approved for use incountries that accept the IC radio approvals, primarily Canada.• R&TTE - The antenna is included in the R&TTE test reports and thus approved for use in countries thataccept the R&TTE radio approvals, primarily the European countries.• MIC - The antenna is included in the Japanese government affiliated MIC test reports and thus approvedfor use in the Japanese market.In general, antennas with SMD connection, Reverse Polarity SMA connector or U.FL connector are included inFCC, IC, R&TTE and MIC radio tests. The antennas with SMA connector are included in R&TTE and MIC radiotests but not in FCC or IC due to FCC/IC regulations.The external antennas are connected to the board through U.FL connectors. Some of the antennas areconnected directly to the U.FL connector of the board and some are connected using an SMA or reversedpolarity SMA connector through a short U.FL to SMA or reversed polarity SMA adapter cable. Antennaaccessories and recommended antennas can be found in Appendix B.2.2.2 Internal antenna designKeep a minimum clearance of 5 mm between the antenna and the casing. Keep a minimum 10 mm free spacefrom metal around the antenna including under. If a metal enclosure is required, ODIN-W260 with antennaconnectors has to be used.It is recommended to place the ODIN-W262 module so that the internal antenna is in the corner of the host PCB(Pin A18 should be in the corner) as seen in Figure 5. The antenna side (short side closest to the antenna),