Product category:
Antennas and Feeders
News Release from: Fractus | Subject: TVNow antennas
Edited by the Electronicstalk Editorial
Team on 25 April 2007
Internal antenna aids mobile TV
miniaturisation
A custom-built antenna helps make the Sagem myMobileTV handset the smallest DVB-H handset on the market with an internal antenna.
Fractus has developed a custom-built DVB-H antenna for Sagem's new myMobileTV handset making it the smallest DVB-H handset on the market with an internal antenna The miniature antenna measures 33 x 10.5 x 7mm and supports the DVB-H standard on the UHF (470-750MHz) frequency band
This article was originally published on Electronicstalk on 30 Oct 2006 at 8.00am (UK)
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The myMobile TV handset is just 97 x 47 x 23mm in size, with an impressive 56 x 40mm swivelling QVGA colour screen.
The vast majority of mobile TV handsets currently on the market use an external antenna, and the few using internal antennas are much bulkier than Sagem's new design.
Fractus also overcame other RF challenges as the GSM and DVB-H frequency bands used in the phone intersect, potentially creating a major interference issue.
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"Simply put, DVB-H is the single greatest challenge facing handset designers today as consumers are not willing to compromise on the aesthetic of their device in return for new features", said Alfonso Sanz, Fractus Lead Engineer, Products and Services Division.
"Most people could be forgiven for thinking that the external mobile antenna had been relegated to the history books, but mobile TV has brought about its reappearance".
To save space, the antenna for the myMobileTV handset was designed using Fractus' patented fractal antenna technologies, allowing Sagem Communication to create a smaller phone platform than what has been achieved by other mobile TV manufacturers.
Mobile television raises major interference challenges caused by overlapping DVB-H and GSM frequencies and also from the differing body position when holding the phone in front of the body (watching TV) as opposed to the typical position against the head when making a call.
Sagem's myMobileTV posed additional antenna design challenges because its swivel QVGA colour screen enables the handset to take multiple form factors - each of which demands meticulous RF planning to ensure consistently high reception.
Fractus provided Sagem with complete antenna design, development, support, testing, manufacturing and approval services to ensure the customised antenna was as effective as possible within the handset, while respecting Sagem's mechanical and design requirements.
Late last year, Fractus became the first telecomms antenna developer to announce a suite of DVB-H and ISDB-H internal mobile TV antenna solutions for all three mobile TV frequencies: VHF, UHF and 1.6GHz L-band.
The Fractus TVNow range of antennas for mobile TV was commended for the GSM Association's Global Mobile Awards 2007.
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