Isolation between two antennas - how to measure?

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Rydryn

Joined: 13 Feb 2006
Posts: 22
Location: Wroclaw Poland

23 May 2007 13:44 how to measure for two antennas

Dear all,

How can I measure the isolation between Rx and Tx antennas of the on-channel repeater? What is the best method and which equipment is necessary?

Regards

R.

tranvu_hop

Joined: 01 May 2006
Posts: 3

14 Nov 2008 10:03 how to measure isolation

Rydryn wrote:

Dear all,

How can I measure the isolation between Rx and Tx antennas of the on-channel repeater? What is the best method and which equipment is necessary?

Regards

R.

You need three antenna, 1 signal generator, 1 spectrum analyzer.
The first antenna, you connect to signal generator. Two other antenna, you place in two different locations.
With the same transmitted power in signal generator. You use spectrum analyzer to measure signal in 2 antena else.
signal in the second antena - third antena is the isolation.
Goodluck

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mainak001

Joined: 01 Dec 2005
Posts: 58
Helped: 1
Location: India

15 Nov 2008 6:10 Re: Isolation between two antennas - how to measure?

thank u for the reply ....................

i 'm also srching for the same..

Can u tell me ..if ihave two different type of antenna how can i determine cross polarization beetween the two?