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[SOLVED] Cofdm Power Amplifier 1W

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Aalda

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Hi,

I'm designing COFDM power amplifier with output power 1W and with MER 35 dB, which PA transistor should I use?

Is it usable LDMOS MW6S004NT1 or should I use MW6S010N or anything else?

Thank you
 

DDavid

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If u want OFDM u need at least backoff around 10dB, so with this 4w=36dBm
i dont think u can use this
please supply more data which freq bw, etc
 

Aalda

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Frequency is from 480 MHz to 860 MHz with BW 8MHz. It is amplifier for DVB-T signal.
 

DDavid

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I am used for the same application for the BW and get 42dB MER with BLF871
 

Aalda

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But BLF871 is 100 W transistor and it has 24 W with DVB-T modulation so I think that is overdesigned , 1 W is enough for me.

And what was power consumption ?
 
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DDavid

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Yes u right I need more than 1w
u can put AP603 in balanced configuration so u will be able to get 36dB MER at 30dBm
 

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