Is RFX900 simultaneous transmit and receive funtion possible?

GNU Radio
1

Hi to all,

I need to implement a RFID reader using GNURadio RFX900.
I wanted to know urgently that is it possible to use a single
RFX900 for simultaneously transmitting and receiving.
I am in a hurry to purchase the stuff so I can receive it before
holidays.
Prompt responses are highly appreciated.
Thanks in advance.

Regards,
Subodh

2

subodh chiwate wrote:

Hi to all,

I need to implement a RFID reader using GNURadio RFX900.
I wanted to know urgently that is it possible to use a single
RFX900 for simultaneously transmitting and receiving.

Yes. You need to be transmitting and receiving on frequencies which
are separated by at least several MHz.

Matt

3

subodh chiwate wrote:

Hi to all,

I need to implement a RFID reader using GNURadio RFX900.
I wanted to know urgently that is it possible to use a single
RFX900 for simultaneously transmitting and receiving.
I am in a hurry to purchase the stuff so I can receive it before holidays.
Prompt responses are highly appreciated.

Yes you can. The limitations are :

  • Obviously not on the same antenna port, there is a RX and TX SMA so
    you need distinct two antennas (and preferably setup in a way that
    doesnt send all the tx power in the rx antenna) or an external duplexer
    for your frequency of interest.

  • There is some internal tx -> rx cross talk, it can be dimished by
    removing a cap but from my observations, the tx->rx leak from antenna to
    antenna is much greater than the internal one.

  • Two distinct frequencies, separated by several Mhz.

    Sylvain