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Hello guys,
I am currently making a design including a GSM module which has a 50 ohm impedance output for the antenna. However I am interested in using a dipole (73 Ohm img 43Ohm) antenna with this module.
I have been searching around for either a dedicated , or discrete balun that can handle...
Thanks for the replies.
Regarding volume, we predict that there is capacity for at least 1-500.000 units in Europe, depending on our marketing skills. We are trying to produce a nice looking product so we can attract some investments. Is this a wrong way to go about it?
Should we seek to do...
Hello everybody.
Ive been working on a product for a couple of years now. All the electronics is now in a perfect DFM state, and everything works like a charm. So far we been using off the shelf cases, and some 3D prints in order to simulate some casings.
Now the next step is coming up, we need...
Wouldn't a dipole antenna be a good way to remove the asymmetry, and therefore increase the antenna efficiency?
For clarity i have attached a drawing of the concept:
Hi guys,
I got a very small GSM based product, which implies a very small ground plane.
Experience and literature has proven that having a small ground plane is very bad for monopole antenna efficiency.
Would it be possible to make a dipole antenna using monopole chip antenna elements?
This...
Hi guys, im building a simple battery USB charger which has to provide a constant 5V output @ 0.5-1A. The charger has to be able to handle input voltages higher and lower than the output voltage (3-10V). I have been reading about boost/buck converters however on most of the datasheets i have...
Hi guys ive been looking around for some information about this, and it all seems quite old, and without any particular solution..
i am building a very small device that has a GSM module built in.. however i would love to exchange the micro sim slot with a eeprom with the SIM card information...
Yeah as stated in the description, i live in a really old apartment, and i have yet to find a earth ground wire around here. I am daily working with sensitive IC's, and believe its about time to find some kind of ESD protection. The only concept i know of is a ESD wrist strap, but with no earth...
Hi i cant seem to find a way to mutiplex different supply voltages(5, 3.3, 2.5 and 1.8V and ground) at a power of max 2W to a single pin. All multiplexers i found are has a max tolerance of approx 50mA. I dont care about switching speed.
Is there any IC solutions for this, or do i have to build...
Hi guys, i am working on a design for my upcomming final year project. In a part of this project i have to build a audio receiver but the criteria is quite demanding:
- It has to be able to receive a wireless signal from a source which is going to be 15 cm away, and transmit at max 100mW power
-...
thanks guys, i used the circuit from BradTheRad with success! and thanks for the idea with software invert nitishn5, ill consider using that in my next design:)
Hi i have been looking around in the forum and not really been able to find a concrete answer to this question. I have a GPS module which has a digital IO of 1.8V, this is supposed to communicate to a 5V micro via serial uart.. Fortunately the RX line of the GPS is designed to handle up to 3.35...
thats a nice one! however i found these: http://www1.elfa.se/data1/wwwroot/assets/datasheets/XC6210_eng_datasheet.pdf
��FEATURES
Maximum Output Current : More than 700mA
(800mA limit, TYP.)
(1.6V<VOUT(T)<5.0V)
Dropout Voltage : 50mV @ 100mA
: 100mV @ 200mA
Operating Voltage Range ...
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