Antenna Tuner Extends LTE Bandwidth By A Factor Of Seven
WiSpry’s WS1033 Long-Term Evolution (LTE) antenna tuner has successfully extended usable bandwidth on an LTE smart phone from 25 MHz to 180 MHz without changing the production antenna, according to the company.
Using two identical, commercially available LTE phones, WiSpry modified one with the WS1033-based antenna tuning network and left the second unmodified. The modified phone demonstrated far higher usable bandwidth of 180 MHz (700 to 880 MHz), compared to less than 25 MHz for the unmodified phone, the company says.
According to WiSpry, this demonstration marks the first time that off-the-shelf antennas in smart-phone form factors have achieved such a dramatic bandwidth extension. The WS1033 extended the 700-MHz bandwidth more than seven times and enabled the company to cover band XII through band V with no change to the antenna element, WiSpry said.
Engineers can use the WS1033 to select the optimum circuit configuration for their antenna tuning requirements. The tuner’s MIPI Alliance RFFE 1.1 interface and 3/4-wire serial peripheral interface (SPI) make it plug-and-play compatible with all major smart-phone chipsets. WiSpry also says that the WS1033 provides the industry’s highest RF performance, lowest energy consumption, and the linearity necessary to support LTE, simultaneous voice and LTE (SVLTE), and carrier aggregation applications.
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