13 Threads found on edaboard.com: Power Amplifier For Gsm
I have designed a gsm amplifier using MRFE6S9125N.The band width is 915 to 960 MHz . The out put power is 40 watts. I followed matching networks given in the datasheet on FR4. This amplifier is working well without any problem. It ' gain was set to 16 or17 db by using VNA. This amplifier is working (...)
RF, Microwave, Antennas and Optics :: 10-05-2013 05:12 :: adnan012 :: Replies: 11 :: Views: 402
A RF amplifier of gsm band , is rated as 30 watt average power and Channel output power 14dBm/30KHz. What does it mean?
RF, Microwave, Antennas and Optics :: 10-01-2013 05:51 :: adnan012 :: Replies: 1 :: Views: 209
Max allowed TX levels (Watt) for some common systems:
gsm 900: 2
gsm 1800: 1
UMTS 2100: 0.126
power level is dynamically reduced depending on how good connection is with base radio.
Some systems are transmitting in short time slots. Due to this have for example gsm 900 (...)
RF, Microwave, Antennas and Optics :: 06-12-2013 12:31 :: E Kafeman :: Replies: 1 :: Views: 238
I am designing a n amplifier for gsm BTS. I have selected MRFE6S9125N for my design. Previously i have successfully designed gsm amplifier by using PD20015-E fro ST.
I want to use MRFE6S9125N at 30 to 40 watt output with 28v dc.
I am facing difficulties in extracting the optimum (...)
RF, Microwave, Antennas and Optics :: 01-04-2013 00:42 :: adnan012 :: Replies: 9 :: Views: 519
If anyone was interested to view microcontroller projects such as RFID card lock, or gsm controller, or if you wanted to build high-power amplifier, 250W or 500W sine power, you could download and build them:
I hope you'll like it :)
Hobby Circuits and Small Projects Problems :: 01-29-2008 16:21 :: johnny_hush :: Replies: 9 :: Views: 9425
I need help for gsm power amplifier design ( both 900 and 1800 MHz separately) with 20 dBm input and 40 dBm output. I need a fast and practical solution, so a gsm power amplifier chip with application circuit will be very useful for me. I may also want to (...)
Analog Circuit Design :: 11-01-2009 04:05 :: agultekin35 :: Replies: 0 :: Views: 645
1)for PA forward isolation, it means when the PA is shutdown (no power supply), the power coupled from input to output. It's used in gsm handset power amplifier module filed.
Electronic Elementary Questions :: 09-26-2008 01:12 :: spikeyang :: Replies: 2 :: Views: 1397
I want to build a hight power amplifier (30 or 40W ) for gsm 900.
any design or example :?:
RF, Microwave, Antennas and Optics :: 06-26-2008 16:17 :: elkimhoc :: Replies: 1 :: Views: 528
The supply current of the power amplifier is converted into a voltage over a sense resistor. A common operational amplifier can read this voltage used to control the gain of the PA.
RF, Microwave, Antennas and Optics :: 01-30-2007 06:23 :: vfone :: Replies: 1 :: Views: 658
Because GMSK is a constant amplitude signal, the power of the modulated signal is constant. Because of that, you can use a compressed, non-linear amplifier for GMSK.
Digital communication :: 11-29-2006 18:49 :: RFDave :: Replies: 16 :: Views: 2659
It is known that biasing circuit is critical for power amplifier performance.Can somebody talk about the trade-off between them?Such as from linearity,efficiency,temperature stablity,biasing stability points of view?
RF, Microwave, Antennas and Optics :: 12-19-2005 21:06 :: haitaoz :: Replies: 10 :: Views: 2483
for gsm RF system.
I'm trying to investigate TXVCO loading unmatched to 50 Ohm problem.
Let me say, if here exists TXVCO output cascaded into RF power amplifier, what if
NOT 50 ohm load trace really happens.
If we temperarilly disregard varying input impedance at different output power level of (...)
Analog Circuit Design :: 08-02-2005 10:04 :: Wilson_yu_chen :: Replies: 0 :: Views: 603
low cost gsm also available on
do not spaming !!!
Low-Cost, Low-Voltage, PA power Control amplifier for gsm Applications in 8-Pin QFN
Business, Promotions, Advertising :: 07-16-2006 05:05 :: dainis :: Replies: 55 :: Views: 44258