{"id":6455,"date":"2015-12-01T10:52:39","date_gmt":"2015-12-01T09:52:39","guid":{"rendered":"http:\/\/www.gsm-modem.de\/M2M\/?p=6455"},"modified":"2015-12-02T08:45:33","modified_gmt":"2015-12-02T07:45:33","slug":"embedded-lte-antenne-for-lte-module","status":"publish","type":"post","link":"http:\/\/www.gsm-modem.de\/M2M\/m2m-componets\/embedded-lte-antenne-for-lte-module\/","title":{"rendered":"Which embedded LTE antenna to select for your LTE module?"},"content":{"rendered":"

Embedded LTE antenna consideration<\/h2>\n

Choosing the right integrated LTE antenna is not easy. The large number of LTE bands makes the construction of integrated LTE antennas more complex. All that glitters is not gold. You have to look closely at the data sheet of the LTE antenna. The lowest LTE frequency is 698 MHz. The highest LTE frequency is 2690 MHz. And between the\u00a0 lowermost and\u00a0uppermost LTE frequency are a few more bands. GSM and UMTS are still the fall-back mode for LTE, and should also be covered.
\nLooking very closely at the data sheet includes taking a close look at the size of the reference ground plane of the LTE antenna evaluation kit. The lower the lowest frequency, the greater must be the PCB area. Some antennas are specified to a 120 mm long ground plane. Other antennas are specified on a ground plane length of 100 mm. When comparing data sheets, you should do so with the same length of ground plane. If this is not possible, then only a test set-up will help. The test set-up will contain at least a blank PCB with the LTE antennas you wish to compare and, if available, also with the battery. The battery is a large rolled metal surface and increases the ground plan or does exactly the opposite acting as a notch filter to asorb your RF energy. The plastic enclosure with its Epsilon R will change the Radiation Pattern as well. The evaluation kits of the antenna manufacturers are usually tested in free space. But if the plastic contains foreign materials, in extreme metal or carbon, then the measurement result will be frighteningly bad.<\/p>\n

Example for an embedded LTE antenna:<\/h2>\n
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Records of the embedded LTE antenna<\/h3>\n
\"LTE<\/a>

Embeded LTE chip antenna<\/p><\/div>\n<\/div>\n