Solution for reflected power and vswr measurement

haii

i want to get dc signal corresponding to RF forward and reflected power and vswr.
is any smd type or any other components are available for this purpose?

actually my requirement is i want dc voltage output signal corresponding to forward and reflected power and vswr. the max power is not more than 1 or 2 watt.


pls reply

thanks

Hi,
Check pls i.e. Visit Analog Devices RF detector ICs, it exists solutions up to GHz range!
K.

haii


for forward power measurement is possible with some ics
but for reflected power and vswr what is the solution

You need, of course "the coupler/bridge" for that...

1W_ 1KHz-500MHz digitales Wattmeter von OZ2CPU
w*w.dl9an.de/home/index.php?option=com_content&task=view&id=22&Itemi d=33

Digitalt Wattmeter, w*w.webx.dk/oz2cpu/radios/milliwatt-dk.htm

Here can you lot of things find:
2.4 GHz RF Power Meter / SWR Meter: w*w.qsl.net/n9zia/wireless/pwr-mtr-pics.html
Return Loss Bridge: w*w.qsl.net/n9zia/wireless/rtrn_loss-pics.html
K.

You can use a directional coupler.
It is a 4 port device: input, output, forward and reflected.
at both forward and reflected you have to connect the detector (could be an IC or a diode) to convert RF power to DC voltage.

To select the part you need to know max power handling, coupling factor and directivity. There are many manufacturers, for instance anaren, minicircuits, synergy microwave, RF labs, etc.

Regards

SWR Bridges, a good selection is possible: w*w.dxportal.com/stats/content/316714-swr-bridge.html
K.

There are RF detector ICs available in the market. You can find them in companies like Linear Technology,Maxim,etc...

@eee100,
Yes; you can find the same advise in my first comment too ...
K.