Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

About Directional Coupler

Status
Not open for further replies.

MuCiT

Member level 1
Joined
Sep 19, 2002
Messages
32
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Location
Turkey
Activity points
118
directional coupler

Hi,
I have a 30 dBm power amplifier. If I use 20 dB directional coupler with the power amplifier, how much power does coupled port give?
Regards.
 

vfone

Advanced Member level 5
Joined
Oct 10, 2001
Messages
5,140
Helped
1,526
Reputation
3,053
Reaction score
1,127
Trophy points
1,393
Activity points
32,525
coupler

+10dBm
 

    MuCiT

    points: 2
    Helpful Answer Positive Rating

MuCiT

Member level 1
Joined
Sep 19, 2002
Messages
32
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Location
Turkey
Activity points
118
directional coupler

Thanks for your attention. I have to use a +30 dBm transmitter and a receiver with single antenna but there is too much loss if I use the coupler. If the output power is +50dBm, coupled port power is +30 dBm but it is not useful because +50 dBm is too much power. Are there any solitions?
 

vfone

Advanced Member level 5
Joined
Oct 10, 2001
Messages
5,140
Helped
1,526
Reputation
3,053
Reaction score
1,127
Trophy points
1,393
Activity points
32,525
Yes. Place a 30dB attenuator after the coupler. 30dB plus coupling attenuation (20dB) would be enough for most of the analyzers.
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top