Selectivity improvement solutions proposal for UmTRX

Alexander Chemeris alexander.chemeris at gmail.com
Mon Mar 19 08:48:03 UTC 2012


Andrey,

What I proposed is to use a side connector to connect UmTRX PCB and RF
board OCB side-to-side, without a cable. This way we need two
connectors and no cables at all. Downside of this solution is less
flexibility in the RF board placement, but do we really need this
flexibility?

2012/3/19 Andrey Sviyazov <andreysviyaz at gmail.com>:
> Hi Alexander.
>
> Actualy I don't know side-type connectors for cable.
> I suggested you PCB side connector (like PCI) for debugging only.
> Moreover, there are a lot SMD connectors for IDC flat cable, BHS-10 for
> example.
>
> Best regards,
> Andrey Sviyazov.
>
>
>
> 19 марта 2012 г. 10:14 пользователь Alexander Chemeris
> <alexander.chemeris at gmail.com> написал:
>
>> Andrey,
>>
>> 2012/3/19 Andrey Sviyazov <andreysviyaz at gmail.com>:
>> > 5) Regarding connectors, I only can suggest to use the two angle
>> > SMA-female
>> > connectors for outputs which will stick out through the panel of the
>> > housing
>> > (as you can use the angle SMA connectors, but for GPS and CLK_I/O on the
>> > UmTRX board). At the same time for the internal 4 connectors we can use
>> > some
>> > cheap like U.FL and cable assemblies U.FL-MCX or  U.FL-U.FL. Signal
>> > CLK_26MHz,  6.5VDC, SPI and Switch controls will go via IDC control
>> > connector.
>>
>> IDC connectors on a UmTRX and on a RF board will be connected with a
>> flat ribbon cable?
>>
>> Why don't you want to use a side connector?
>>
>> --
>> Regards,
>> Alexander Chemeris.
>> CEO, Fairwaves LLC / ООО УмРадио
>> http://fairwaves.ru
>
>



-- 
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио
http://fairwaves.ru



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