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Pcb Trace Antenna

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34 Threads found on edaboard.com: Pcb Trace Antenna
Hello all, I've been trying to find an eagle library for a pcb trace antenna (say Inverted F- antenna). So far no luck in finding any. Does anyone have a library they'd like to share with me? Good day. Thank you. Cheers, Ram.
I need to pick a pcb trace antenna. From my understanding, the only advantage of the inverted F over an L antenna is that the inverted F antenna can be matched by choosing the feed point. Either way I was going to use a pie matching network, so given this fact is there still any advantage to choosing the (...)
Hi, I'm going to put together a rough 1/4 wave vertical monopole with poor ground plane in the form of a pcb trace (pcb will be mounted perpendicular to the earth). I know I'll be giving up a lot of efficiency but it's the old story of space and manufacturing cost trade-off. So I'm thinking that current is going to be strongest towards (...)
Hi, I am working on Automotive based project(TPMS). Now our product has pcb trace antenna. In the next version we are planning to add Stem valve as antenna. I do not have any idea about what technique i should use in the pcb to connect with stem valve. I googled and found that most of the product using (...)
I think you can use pcb trace antennas. Inverted F-antenna, Meandered inverted f antenna etc.
Hi all. I need to copy exact pcb, and there is complicated trace-antenna. Is there possibility to add image in background of routing pcb ? Like in photoshop "transparent layer" . Thanks !
Hiii guys, How can I check my pcb trace antenna is sending or receiving data??In my project CC2541 RF pins connected to Balun IC's(2450BM15A0002)balanced pins and Balun's unbalanced pin connected to pcb trace antenna. 1. Can I check the voltage at RF pins of CC2541? 2. if yes what (...)
Your question is missing many necessary informations: - what's the output impedance of the "impedance matching IC"? (Is it a ceramic chip balun?) - what's the actual antenna input terminal and designed impedance? - are there more pcb layers not shown in the screendump or just top and bottom? To me it looks like an inverted F (...)
but if the width is too narrow like 0.8mm then I have matching network problems. Why, particularly? Also thinner track means less current, right? Yes, it's your decision to use 0.38 mm substrate height and enforce respective low trace width... If you think a bit, you'll realize that there other possible geometr
As described in attached pictures, these components are used for antenna matching. Now antenna matching is "To match the impedance of Module's ANT pad to 1. pcb trace from ANT-pad to antenna & 2. antenna itself." Usually, impedance of antenna is 50 ohm and impedance of (...)
I am doing a design using the SIM908. I want the pcb tracks going to the GSM/ GPS antennas to be 50 OHM characteristic impedance. I do not understand how to do this in Eagle.(or in any other) Can someone please advice me? thanks.
Hi guys i am going to design a modem with M-10 module...I need on board RF antenna trace(mean no ideas to with external antennas)....Can anyone approach some idea good ideas for that?:idea::idea::idea:
Hi, I am doing a small project of monopole and dipole antennas used in mobile devices.Here,the antennas (made of metal with thickness 0.3 mm) were placed on the inner layer of the mobile casing (casing is made of plastic) and is soldered from the device pcb 50ohm trace using coaxial cable to antenna feeding (...)
Their feed line was 20mil (0.50mm) width but using a 4-layer pcb, so I changed it to 1.4mm. Will my design work this way ? Yes. Your method is correct. Do I have to change the lenght of the trace ? No, the length can be unchanged. One more thing I was neve
Hi all, I routed a 50 Ohm trace to antenna pin. But the pin is on the bottom layer, so i have to connect it through a via(12/25/37mil, drill hole/pad/power isolation diameter) and 10mil trace width. For more detail, please look at the picture. The frequency is 2.4~2.5GHz. Because the space is too tight, the via is in pin
According to my knowledge the pcb trace which they are calling inductor is an antenna. This looks like some sort of short range transmitter device to me. I will not disagree to statement of 55 to 100mW of power it is only 50 Ohm power he is talking about which he measured on SA. Actual transmitting power may be say 10~ 20 mW. (...)
Hi All. I am designing a pcb for SIM908 Module with SMA (Right Angle) antenna Connector. I have attached my Schematic and pcb RF trace Images for your review. This is the fist time I am designing RF traces, so quite worried. I'll be glad to have your comment regarding my design. Thanks. Regards.
There are many small-size key-chain transmitters and a bit larger receivers on the market. To operate over a distance, you will need at least a quarter-wave antenna, not a "coiled wire", and not a pcb trace. I would recommend you to start with an available version, then if you can operate it as desired, you can remake or miniaturize the (...)
Hello, I'm working on a layout of device that uses IEEE802.15.4 2.4GHz radio communication. There is a radio chip with the 50Ohm antenna output and edge pcb mounted SMA connector. I already used "Wcalc" application to calculate the antenna trace parameters (such width and spacing) but I'm not sure how should the (...)
It is not too likely that it is your antenna. These types of receivers typically have a pretty good dynamic range, and even with a mismatched antenna you should get more than 1.5 meters. You could use a wire or pcb trace with a series inductor tuning it at its base. You choose a wire/trace length, and (...)
I buy a SIM18 GPS module and make a pcb according to the guideline. GPS is running normally but only issue is sync. i tried active and passive antenna but still no sync. i tried 2 or 3 different pcbs and concentrate on antenna trace but no luck. i think issue is antenna (...)
I have to design the layout of an embedded device with bluetooth interface. I use an STM bluetooth module and an antenova Chip antenna. In this contest, I have to design the antenna Matching Circuit to adapt the Impedance value between antenna and Module. It is very important to calculate the Impedance value of the trace (...)
Hi all, its about the TL for the Bluetooth antenna. I am using a multilayer pcb and the feed line has matching circuit in between. the first part of the trace is thin in terms of width based on the gnd layer 2 calculation, and the second part of the trace is wider based on the gnd layer 4 ( layer2 and 3 are keep outs). (...)
I had some free space on my pcb and thought, let's draw a pcb antenna. You see a 1.5 mm trace in the lower part of the pcb with the length of a quarter wavelength for 868 MHz. Right next to the pcb will be a battery compartment, so clearance is absolutely not respected I'm afraid. Is this (...)
When simulated the PA loadpull match, the duplexer+antenna's S parameter are measured and givend in s1p file for ADS simulation, the components L C use the murata's design kit. But the result is quite different from what measured from NA. How to make the simulation more accurate? should i involve the pcb trace as microstrip line? Is (...)
Suppose you have a trace on a pcb board (could be antenna, whatever) and would like to visualize the EM field radiated by that piece of metal. Most likely you would be more interested into the field close to the metal and therefore would like the mesh to be more dense in that region. So you could put a dummy object, like cylinder or small (...)
Are you saying you are sending RF energy thru a flex pcb and it is generating spurs? Hmmmm. I would look at the interconnect between the flex pcb and the hard pcb portions. Right at the interconnect, is there a good solder connection, some sort of adhesive connection, etc. Try experimenting with better soldering there.
most of the PA modules are internlly matched to 50 ohm , so all u need a 50 ohm pcb trace to the duplexer and from the duplexer to antenna connector but if ur designing ur PA , then u need to design the matching network by urelf khouly
I think the main point here is that the ground plane, the pcb dielectric and the trace line, all these components combine to form a microstrip line. The wave travels through this microstrip in quasi-TEM mode, as explained by many text books. If no ground plane existed, we can imagine the trace line can simply be an antenna. br
Dear All, Whats the impact for Rohs conversion on pcb? Will the conversion affects the characteristic impedance of the board? The situation is as follows My Board has a RF antenna trace with some grounding vias. We are trying to convert from HAL finishing to GOLD Flash? will this conversion affect the impdance of RF (...)
Hello, Can anyone give the reason how pcb trace acts as antenna at High Speed. Thanks
when does a pcb trace acts as a transmission line ? I know that there is some rule that the trace will act as a tx line when: Rise time < 2* loaded flight time along the trace. BUT, MY QUESTION IS : HOW THIS FORMULA CAME ??? I want to know the subjective reasoning behind that.
Dear all, For the original design, the copper thickness at toppest and lowest pcb is 1.5oz. If we change it to the 0.5oz or 1.0oz thickness, what were the effect for the pcb antenna and the RF trace path? (The pcb antenna and the RF trace path are on the toppest and (...)
the length of the pcb trace could have an impedence transformation effect. how long is your trace? you need to cal out the trace to make a correct measurement at your reference imput impedance. if not you are measuring at the wrong reference for comparison.