RDS/RBDS FM receiver (external) for traffic conditions

Doug Sutherland doug at proficio.ca
Sun Nov 18 21:20:54 CET 2007


Josh wrote:
> One of the apparent weaknesses of the Si USB dongles (from my armchair 
> research) is the antenna connection - it might be nice to have a mini 
> SMA or something (with the standard FM resistance -- 75 Ohms?)

Yeah the USB FM Radio stick has a wire sticking out, that is the antenna.
For most real applications of this chip, the earphone wire acts as the 
antenna, like in my sony ericsson phone. The evaluation board for the 
chipset has SMA connector so you can try different antennae.

Looky ....
http://www.electrosnab.ru/silabs/pdf/Si/si4700-B15rev1_0.pdf
http://www.electrosnab.ru/silabs/pdf/Si/AN230Rev0_3.pdf
http://www.electrosnab.ru/silabs/pdf/Si/AN232Rev0_2.pdf
http://www.electrosnab.ru/silabs/pdf/Si/AN234Rev0_2.pdf
http://www.electrosnab.ru/silabs/pdf/Si/AN235Rev0_5.pdf
http://www.electrosnab.ru/silabs/pdf/Si/AN284Rev0_1.pdf

  -- Doug




More information about the community mailing list