MEDIA RELEASE PR37744
Rayspan Metamaterial Antennas Reduce Handset Radiation Exposure, Accelerate Testing & Reduce
Time to Market
SAN DIEGO, Jan. 5 /PRNewswire-AsiaNet/ --
Antenna Implementation in the new LG Chocolate (LG BL40) Earns
Top Spot in SAR Comparison
Rayspan Corporation, the world's only provider of wireless air interface
(antenna and RF front-end) technology based on metamaterials, announced that
the new LG Chocolate (LG BL40) phone, the first cellular handset to implement
performer in a
Specific Absorption Rate (SAR) comparison of the most popular mobile phones
in Europe. With a SAR of 0.21 watts per kilogram (W/Kg), the antenna in the
new LG Chocolate exposes the user to almost three times less electromagnetic
radiation than that of the next-best performer, the Samsung Omnia II, with a
SAR of 0.59. Other phones compared by the British Telegraph
include the Apple iPhone 3GS (0.79), Nokia N97 (0.66) and Blackberry Curve 8520 (1.22).
SAR measures how much radio frequency (RF) energy is absorbed by body
tissue while using a mobile phone. In the United States, the level must be
less than 1.6W/kg in one gram of tissue. In Europe, it is capped at 2W/kg in
10 grams of tissue. The new LG Chocolate report is available from the Federal
Franz Birkner, president and CEO of Rayspan explained that metamaterial
antennas differ from conventional 'physical' ones. Metamaterials allow
Rayspan to concentrate the electromagnetic fields and currents near the
antenna structures, producing handsets that (1) radiate significantly less RF
energy near the head and (2) offer high performance that is unaffected by the
user's hand and head intervention.
In addition, handset manufacturers can "print" a metamaterial antenna
directly on a conventional printed circuit board (PCB) using a CAD file,
unlike a 'physical' conventional antenna, which must be designed, tooled and
fabricated as a metal-and-plastic assembly. "Our customers enjoy
high-performance, reduced-cost handsets that allow them to reach their
markets quickly -, often before target deadlines, because metamaterial
antennas are quick and easy to implement and manufacture, and they can
reliably achieve mandated SAR specifications and pass field tests exactly as
planned," explained Birkner. Metamaterial antenna design-in usually takes
just two weeks to a month. Following that, customers pay Rayspan a royalty
fee per unit sold, which is almost always less than the cost of the physical
conventional antennas that are eliminated.
Metamaterials are composite structures engineered using conventional
materials such as PCBs and copper foil that produce unique and highly
desirable electromagnetic behavior. These properties enable antenna
miniaturization and performance improvement while simultaneously reducing
costs and simplifying manufacturing.
operate more efficiently in constrained spaces with fewer RF "hotspots" on
the main handset PCB than conventional antennas such as Planar Inverted-F
Antennas (PIFAs). In such conventional physical antennas, currents can flow
throughout the PCB, but when radiating in the low-frequency cellular bands
they are concentrated at the end opposite the physical antenna structure,
which is typically found on the bottom, near the chin. Hence, with current
concentrated on the 'head' end of the PCB, more RF energy is absorbed by the
head. By contrast, Rayspan's Metamaterial technology can confine the currents
to the area near the antenna structure, directing much of the RF energy away
from the handset user's head and hand.
A metamaterial antenna also helps handset manufacturers deliver multiband
functionality in a small form factor. Dr. Woo Paik, president and chief
technology officer of LG Electronics, said Rayspan's technology helped them
achieve the "slim dimensions" (10.9mm) and "unsurpassed radio frequency
capabilities" of its new LG Chocolate Phone.
Typically sized less than 10 by 50 millimeters and as thin as paper,
Rayspan's metamaterial antenna can support four to six cellular frequency
bands. A penta-band implementation designed for global connectivity covers
low-band GSM/WCDMA/HSPA/LTE (700/800/900 MHz) and high-band
DCS/PCS/WCDMA/HSPA/LTE (1700/1800/1900/2100 MHz) frequencies. It also enables
integration of GPS, Bluetooth, WiFi and WiMax in the same antenna array
without undesirable mixing of their signals, and while eliminating the need
for multiple large external and internal antennas.
The new LG Chocolate (LG BL40) phone, the fourth handset of the Black
Label Series boasts a distinctive 4.0-inch wide screen high-definition LCD
with an 800 by 345 pixel resolution for a superb viewing quality. The wide
screen breaks away from conventional screen designs with a 21:9 aspect ratio
for a panoramic, cinema-like quality and optimal mobile computing experience.
About Rayspan
Rayspan is the world's only developer of miniature antennas and RF
front-end components based on metamaterial technology. Compared to
conventional wireless air interface technologies, Rayspan's metamaterial
devices provide unique and highly desirable electromagnetic propagation
properties not found in conventional antennas that enable ultra-small,
multiband cellular handsets, Wi-Fi routers and modems with improved speed,
range and reliability.
The company is headquartered in San Diego, California with
customer-support facilities in Seoul, Korea; Taipei, Taiwan; and Beijing,
China. Rayspan Corporation, 11975 El Camino Real, San Diego, CA 92130;
About LG Electronics, Inc.
LG Electronics, Inc. (KSE: 066570.KS) is a global leader and technology
innovator in consumer electronics, mobile communications and home appliances,
employing more than 84,000 people working in 115 operations including 84
subsidiaries around the world. With 2008 global sales of US$44.7 billion, LG
comprises of five business units - Home Entertainment, Mobile Communications,
Home Appliance, Air Conditioning and Business Solutions. LG is one of the
world's leading producers of flat panel TVs, audio and video products, mobile
handsets, air conditioners and washing machines. LG has signed a long-term
agreement to become both A Global Partner of Formula 1(TM) and A Technology
Partner of Formula 1(TM). As part of this top-level association, LG acquires
exclusive designations and marketing rights as the official consumer
electronics, mobile phone and data processor of this global sporting event.
The LG Electronics Mobile Communications Company is a leading global
mobile communications and information company. With its cutting-edge
technology and innovative design capabilities, LG creates handsets that
provide an optimized mobile experience to customers around the world. LG is
pursuing convergence technology and mobile computing products, while
continuing its leadership role in mobile communication with stylish designs
and smart technology. For more information, please visit www.lge.com.
SOURCE: Rayspan Corporation
CONTACT: Elizabeth Rose of Rayspan(R) Corporation
+1-858-259-9596, ext. 321
elizabeth@rayspan.com
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