Re: RF Switcher and Current Monitor Sample

Thank you very much, Aleksandar,

I found out the document you mentioned at the uBlox website (under Service).
I still prefer a current monitor plus a RF switch solution, since I am using
2 active antennas with almost the same gain. Could you please recommend me a
few current shunt monitor (want bigger output current compared to INA138
with 100uA max output when the differential input voltage is 0.5V), and a
few RF switch (want smaller DC power consumption than SKY13268-344 with
100uA max. consumption) as well?

John


"Aleksandar Kovacevic" <alexx@xxxxxxxxxxxxxxxx> wrote in message
news:d9per3$f09$1@xxxxxxxxxxxxxxxxx
> "Johnson Liuis" <gpsabove@xxxxxxxxx> wrote in message
> news:d9pdt7$fh8$1@xxxxxxxxxxxxxxxxxxxxx
>> Hi there,
>>
>> I am currently working on a GPS Receiver that is able to support both
>> internal and external antenna. I would like the system to detect the
>> external antenna and switch to the external antenna automatically. I
>> remembered I once read a sampe from a magazine that required a RF
>> switcher
>> and a Current Shunt Monitor (like INA138) to detect the current, but I
>> forgoty where it was. Could anybody provide me some information for this
>> type of circuits design using RF switcher and Current Monitor? Any
>> recommendation, suggestion, warning, or tips are highly appreciated.
>
> I remember that was mentioned somewhere in uBlox documentation. Try
> www.ublox.com
>


.

Relevant Pages

  • Re: Electronic multi-switches
    ... An electronic switch of some sort works as ... when an Atari mono monitor is present ... whenever an Atari monitor is used it will work just ...
    (sci.electronics.basics)
  • Re: LCD Monitor Problem - Turns on and off
    ... I had registered my monitor and asked the representative when I called ... he came to switch the monitor on, ... 82k startup resistors were pretty distressed and high. ... there was a single 220uF cap on the primary side. ...
    (sci.electronics.repair)
  • Re: Starting
    ... My system is a HP with a CRT monitor. ... Every morning when I first switch my system on everything starts up and I ... again and my system won't work until I restart it the second time. ... The monitor has its own power cord and goes into standby, ...
    (microsoft.public.windowsxp.basics)
  • Re: resolution changes and KVM switch use
    ... I've set up a KVM switch between a PC running XP and one with Vista ... positioning) when separately connected to the monitor. ... Is this likely to be a KVM switch issue, a conflict between the XP and Vista ... If the user enters the control panel for the video card, the driver may ...
    (microsoft.public.windowsxp.hardware)
  • Re: Vaxstation 3100 and graphics card
    ... > pin vax monitor plug to the 15 pin d-sub VGA plug. ... > happen even if the adaptor is not connected. ... and the manual does not indicate any switch or jumper ... the two switches on the graphics card). ...
    (comp.os.vms)