FYI: I posted Smart Antenna info and list of known manufacturers in two sequential posts:http://www.avsforum.com/avs-vb/showt...&#post13015675
RCA's Indoor Smart Antenna was presumably used at Sep2007 demo to NTIA and Congress:http://www.tvtechnology.com/pages/s.0157/t.8709.html
Broadcom (Pause-TV) Indoor Smart Antenna was in use at CES2008 (Janunary)...
see below photo blowup. So they're out there....just not yet in production....
This month at NAB2008, I saw the prototype (not yet functional) Antennas Direct
Indoor Smart Antenna (see photo below). A-D says it won't be ready until 1Q2009....
It's based on the new (UHF ONLY) Lacrosse Micron (8 dBi max) antenna:http://www.antennasdirect.com/pdf/IndoorAntennas.pdf
A-D was also showing the new (UHF ONLY) Clear-Stream series of antennas:http://www.antennasdirect.com/pdf/ClearStream.pdf
[The above brochure seems to have inflated gain by yet another 2 dB from
what is listed and plotted in the individual spec sheets provided at NAB.]
ClearSTREAM2 gain (per simulation) was 10 dBi (+/- 0.2 dB) over UHF band.
Beamwidth was a very wide 70 degrees over entire (new) UHF band.
They also showed a VHF prototype. [A-D gains are in dBi = dBd +2.15 dB]
A-D Smart Antenna development is being funded by the NAB (National Assoc of Broadcasters)
to encourage Smart Antenna interfaces on new DTVs:http://antennasdirect.com/prmanager/...tail.asp?id=92
The manufacturers could be waiting to FINALIZE the Smart Antenna Test Spec:http://www.twice.com/article/CA65532...dustryid=23105
Another issue they may be struggling with is how to provide a Smart Antenna for
Hi-VHF (and maybe even Lo-VHF) bands, such as crossed dipoles in DTA-5000.
Although not as critical as for UHF....this would become a notable issue Post-Feb2009....
BTW: EIA/CEA-909 Smart Antenna I/F Spec also identifies mechanical rotator control
and four input antenna switches that could be under "Smart" control.....
A four port RF Switch could eliminate high loss combiners used with multiple antennas.
In San Diego, we are surrounded by towers in FOUR different directions....
BTW: Anyone know a source for Lindsay low-loss couplers...they seem to have disappeared....