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ok, now I'll look. I was thinking to use for each connection an OPAMP used as buffer with unity gain but I must find a way to shift the common voltage of the DAC in the acceptable range of 0.9 V to 1.3 V for transmitter. now I try the solution with the differential amplifiers.
Thank you, I'll...
Thank you albbg,
Now i have another question, I have to interface the MAX2830 (Transceiver) with the MAX5866 (dual ADC, dual DAC).
In datasheet of the , in the page 20,
it says: " Also, the DAC analog outputs are designed to drive a differential input stage with input impedance ≧ 70 kΩ."...
Hi,
I have a problem with the datasheet of MAX2830 (Maxim Integrated)
On page 23 in section "Transmitter I/Q Baseband inputs", it is written: "The differential analog inputs of the transmitter baseband amplifier (TXBBI+, TXBBI-, TXBBQ+, TXBBQ-) have a differentials impedance of 20 kΩ||1 pF."...
Information about Peak to Average ratio (PAR) in mobile standard
Hi all,
I want some papers or texts that talk about the Peak to Average Ratio in mobile Standard. Particularly, I am interested to know the typical values of PAR standard for example in LTE, UMTS, WiMax.....
Admittance: help for a little demonstration
Hi all,
I don't succeed to prove these two expressions:
y'1= -1/y'2 (1a)
y'3= -1/y'4 (1b)
The article is this:
**broken link removed**
I hope that someone can help me showing the mathematical steps.
thanks biff44,
you can give more information as to do, about the filter I know very little.
I give me more information and tell me where I can find these things.............
Hi,
I need to design a passive delay line LC with constant delay of 2 ns the frequency f = 2.14 GHz. I found solutions low-pass but obtained a great line (about 20 sections LC).
I'm interested in a solution contained in size also pass band around my frequency.
Hi,
I am making the layout on microstrip for a design of a medium power amplifier at 2.14 GHz. I have a problem about the use of a via hole to provide the ground at my circuitry.
The via hole leads to a significant reduction in gain from 14 dB to 10 dB.
Is it possible?
I am using ADS and my...
I obtained this with S-parameters simulations:
ImageShack® - Online Photo and Video Hosting
and this is transient simulation:
ImageShack® - Online Photo and Video Hosting
Hi all,
I just made a amplifier a 2.14 GHz using the transistor ATF-50189 of the Avago. I biased the device as shown in the datasheet (Vds = 4.5 V, VGS = 0.53 V) and made all the networks stabilization to to avoid oscillations obtaining
factor stability K > 1 and |det(S)| < 1 for all the...
Hello at all,
I have to design a gain amplifier with input 10 dBm and output 28 dBm on 50 Ohm. My frequency is 2,14 GHz. I want someone to give me advice on the transistor to be selected about FETs. I need a model pspice for the device.......
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