In the previous topic, we have discussed about the ham radio and we also understand that how the ham
radio can be designed using lots of different, you know, in this topic.
We are going to discuss about the signal generator.
If I recall the architecture of a software defined radio.
What this consist of, this software defined you consist of a very small section.
Consist of an S..
Moreover, we have a digital to analog converter DC, we have a mixer so that we can translate it to
a particular frequency as well as we have a power amplifier to provide that particular level of a signal.
It's the role of signal generator is to generate a different kind of signal so that we can if we want
to generate a GSM signal, we can generate a GSM signal.
I want to generate WCG, CDMA kind of signals so that I can generate this one LTE signal or a sine wave
cosine with all these things can be generated using a signal generator.
All the software defined you can do in this case, I suppose, and this is the basement part, either
it can be done alone or it can be interface to a laptop PC.
And in the PC laptop, we have a software like Azmat left by 10, Scilab eight years or different kind
of software as we have.
We can generate any signal in the soft good.
For example, I want to generate a GSM light and generate a decent signal.
I want to generate a 256 one signal or I want to generate a one zero two four KWEM signal so I can generate
such kind of signal in the basement section in any kind of software, Leapai, anything.
And then I can upload the signal to the FPGA so that it can be.
For that bust through that system to analog converter, and it can be used or transmitted at a particular
frequency by using the local oscillator frequency that is called center frequency, or that is also
known as health, and that is called local oscillator frequency.
So the local oscillator frequency can be changed using the software itself available in the software
defined radio so that it can be transmitted to a particular location.
For example, I want to transmit the signal at 500 meters.
It can be transmitted.
If they want to change it to one guards, it also can be done.
So that depends on the range of as dear supporters, it can go to Six Hills, then we can transmit a
signal up to six gigahertz and using the power amplifier, we can increase the power of the signal level.
So these all things can be controlled using a softer did for they can generate a signal using the software
defined radio.
So there is no use of receiver in this scenario, only using a transmitter we can transmit or gender
does signal and.
This is the typical block of hookworms signal.
You can see this block is five megahertz.
We've been.
So the signal bandwidth is approximately 20.
Migas, so based on the Bisping processing and capabilities of the hardware, what we can do using estimate,
we can generate signal.
Of different kind.
We can change is the power, I can increase or decrease the transfer power and you can change the timing
of the signal.
It can be five megahertz, twenty four years, sixty one point four years, or tijeras seven point to
make us Hampus per second, I can transmit different bandwidth signal.
Moreover, different combination of signals can be transmitted.
For example, they can transmit the signal and signal or I can do.
Could you get aggregation means they can transmit a different signal in a particular frequency range.
So using the software to find you, you can develop the very low cost signal generator compared to the
conventional signal generator.
And we have a lot of options to tune the desired signal or send a signal depending on our programming
capability.
Careful in this topic, we have learned about the signal generator now in the next topic.
We are going to learn the signal, the laser.