Recent content by rafik

Thank you zoki85

Hi zoki85, the footprint on my PCB is 3.2x1.6x1.2mm, antenna will have to fit into the footprint space. I am looking at the following antenna for my WiFi module: 2450AT18B100E (2450 MHz 50 Ohm Antenna). In your opinion, will this antenna work well in a WiFi module? What are the critical...

Hi, I need to select a passive 50 Ohm surface mount chip Antenna (size 3.2x1.6x1.2 mm) for my WiFi radio. Can I use any 50 Ohm chip Antenna available?

Thank you guys for your replies.

Thank you guys for your answers, I think I feel a lot more confident now. The reason why I focused on the trace impedance is because it is one thing I never had to deal with and I do not have any experience with. I looks to me if I do my math, figure out all the geometry of the traces, and...

Hi the_emi_guy, I do not think I can include a test coupon. I have limited space on my board. From your experience, if board house tests the impedance and it passes, can I be sure that the PCB is OK? How would you design a board with test and verification in mind? What equipment would you...

Thank you Baluncore, great info. I will need some time to digest it. My experience with RF is limited. I did a couple of RF designs in the past by strictly following all the design requirements and it helped. This time I am a little worried because design information for this particular device...

The device is Wi-Fi enabled data transmission unit. I am not sure how much I can disclose I am under NDA. It runs in Linux environment and has 2x2 WiFi radio. Its all high speed. I have made one of the PCB manufacturing requirements - test traces on top layer for 50 and 110 Ohm. I know some PCB...

Yes, both driver and receiver are 50 Ohm. All I have to do is make a 50 Ohm connection between the two. My question is how can I test my boards before we assemble them. Thank you for your posts.

Frequency is 580 MHz, trace impedance has to be ~50 Ohm (Zo), there is a requirement for differential traces as well Zdiff = ~110 Ohm. Trace width is 5mill over 3.5 mill FR-4 (dielectric constant = 3.6 - 4.2). The traces are point to point and average length is 0.85 inch. How can I use RF sweep...

Thank you Baluncore, good info.

Hi, I am working on a PCB that requires controlled trace impedance. I figured out width of the traces and layer stack thickness. How would I verify trace impedance once I get my PCB boards? What equipment do I need?

Are you driving your piezoelectric component with a sine wave?

I wonder, in general isn't it a little too expensive for a multi-meter to be priced at $600 even with all the features being offered?

Thank you phinds.