White Papers

Title:

RAYSPAN^® Metamaterial Antenna Benefits for Cell Phone Manufacturers Improving OEM and ODM Profitability

Abstract:

Metamaterial (MTM) antennas offer multiple benefits for cellular handset Original Equipment Manufacturers (OEMs) and Original Design Manufacturers (ODMs). Improved Over the Air (OTA) performance, reduced Specific Absorption Rate (SAR) values, and reduced Bill of Materials (BOM) costs are only a few of the advantages to be gained through the use of MTM antennas. The following paper outlines the advantages of using RAYSPAN^® MTM antenna technology for cellular handset designs. Specific examples of cost and time benefits for OEMs and ODMs are provided.

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Title:

Manufacturing RAYSPAN^® MTM Antennas™ Using EZTune to Achieve Higher Design Efficiency

Abstract:

Metamaterial antennas are increasingly gaining popularity among manufacturers designing and building wireless devices such as WiFi routers and cellular handsets. Improved OTA performance, reduced SAR values, and reduced BOM costs are only a few of the advantages to be gained through the use of metamaterial antennas. During the design process, the characteristics might be impacted by mechanical changes and other component placement adjustments. Tuning the antenna’s resonant frequencies may require the PCB to be rebuilt and components to be remounted and retested. These are costly and lengthy steps for the wireless device manufacturers during the design and validation process. In order to mitigate the cost and risk, RAYSPAN has brought to market the proprietary RAYSPAN^® EZTune™ metamaterial (MTM) antenna which can be re-tuned without the need to rebuild the PCB or remount components. The following paper describes the RAYSPAN^® EZTune™ technology and gives an example of EZTune™ used in a dual band cellular phone.

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Title:

RAYSPAN^® Proprietary Metamaterial Antennas, a Proven SAR Reduction Solution

Abstract:

Rapid advances in the personal communications industry and the ubiquitous use of cellular phones throughout much of the world have increased concern about the effects of radio frequency radiation from these devices on public health. Regulatory bodies in the United States and Europe have defined the allowable Specific Absorption Rate or SAR in order to ensure that radiation emitted by personal communications devices is safe for the public. Mobile phone manufacturers have used various methods to control or lower the SAR in order to meet these regulations. In a recent article in the British Telegraph, the BL-40 handset from LG, the first ever to utilize a metamaterial antenna based on a proprietary RAYSPAN^® solution, was declared the phone with the lowest SAR value when compared with some of the most popular handsets currently sold in Europe. RAYSPAN^® engineering team has also observed SAR improvement of up to 50%, when conventional antennas in production handsets are replaced with RAYSPAN^® metamaterial antennas.

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