Questions tagged [pcb-antenna]

It is an anntenna type which is implemeted on a PCB (printed circuit board) by copper traces.

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Can I solder a wire antenna to the exposed PCB antenna of a BBC Micro Bit to boost its bluetooth signal?

Can I solder a wire antenna to the exposed PCB antenna of a BBC Micro Bit to boost its Bluetooth signal for both transmitting and receiving data? Can I solder this type of 2.4G antenna to boost the ...
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How to fix the keyless key (replace the antenna) of Mistubishi Outlander?

Background story: I had a keyless keyfob for my Outlander, and lost it. I went to the service and they configured a new key for me. The serviceman told me that many times when the key falls the ...
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What is the frequency measurement range of a NanoVNA?

I have tried to measure a fabricated patch antenna which has theoretically multiband ranging from 1 GHz to 8 GHz, but when I tried to measure it through NanoVNA it barely shows the result from 1 GHz ...
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Blocking BLE Chip Antenna from picking up signals in one direction

I am designing a BLE scanner/observer which uses a ceramic antenna. I was wondering if there is any way to design the PCB such that the antenna chip only picks up signals from in front of it instead ...
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Extend range of BLE devices

I would like to extend the range of two BLE devices. The first one is a VR BLE controller with a monopole pcb antenna. The second one is an ESP32 Tinypico with a chip antenna. I bought two pcb ...
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Signal Integrity in electronic systems

When I went through EMC testing of some electronic boards, I observed that the frequencies of the EM waves generated by the boards are at the fundamental frequency with multiples of some whole number. ...
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How to determine the matching circuit elements for a printed pcb antenna

In a simulator, I designed a PIFA antenna, but I didn't design a matching circuit for it. What factors should I consider when designing the matching circuit?
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What is the loss of the test antenna connected to the spectrum analyser?

I am testing the gain and radiation pattern of some PCB antennas and have a Siglent SSA-3032X-R spectrum analyser connected to a Tekbox Biconical TBMA1 measurement antenna. The test set up and antenna ...
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Can a screw hole in between PCB antenna reduce efficiency significantly?

I am attaching a photo of what I have done. This hole is not suited there, but how much it is going to affect the performance of the antenna?
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Aluminium foil as a ground plane for 900 MHz antenna

I have designed and manufactured an antenna that works around 900 MHz. The design includes a ground plane and metallic enclosure that are not strictly necessary, but do affect the performance of the ...
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Do I need to solder for activating PCB antenna on this ESP32

I designed and ordered a PCB with ESP32. I want to use the PCB antenna, but this has two options (1. PCB antenna 2. Connector for antenna). I am not sure if I need to solder something to activate the ...
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What is this antenna and what is its radiation pattern

Sometimes, there are interesting antennas in the market. As often, the seller knows few things or nothing about it. This is what they say about it: Feature: Antenna frequency 740-6000MHz, good ...
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RF PCBs on 2 layer FR4

I deigning a PCB for an open-source RadioSonde with 403Mhz transmissions using Si4063 ic. Now, these radiosondes are supposed to be inexpensive since there is quite tough competition in the market ...
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Using PCB and external antenna at same time for WiFi

If you use a design with an ESP8266 is there a possibility to use an external antenna (u.fl connector) with a PCB antenna at the same time without using a solder bridge or jumper? Generally speaking, ...
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Symmetric PCB stack-up for phased-array antennas

We all know that a symmetric PCB stack-up is always recommended since it makes manufacturing easier and more reliable. However when designing PCB for antennas application this became quite a difficult ...
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PCB antenna: ground plane layers and dimensions (2)?

This question - sequel of PCB antenna: ground plane layers and dimensions?, talking about an IFA: The only dimension that really matters is the length/width of the ground plane, or parallel to the ...
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RF line: routing it orthogonal over SPI digital signal lines

SPI will be kept below 1MHz. RF signal is under 434 MHz. Is this crossing fine through the big zero ohm resistor ? Side question: will the outermost SPI line (it is the chip select one), or any of the ...
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Near end crosstalk saturation in a microstrip transmission line

I am referring to a microstrip PCB transmission line. I simulated the crosstalk situation using Hyperlynx. Please see the below circuit: I kept increasing the trace length and measured the crosstalk ...
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B-field strength inside current loop antenna

I want to comprehend the design of a microwave antenna designed by Sasaki et al. (arXiv:1605.04627 [cond-mat.mes-hall]) As can be seen in Fig 2a the magnitude of B is strongest in the center of the ...
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Correct antenna position ESP32 on custom board

Is the antenna position correct in this design? In the ESP32 hardware design document, they say: The board hasn't copper or tracks under the antenna. I can't put the antenna on the edge because I ...
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Calculate inductance and capacitance of a double layer antenna (RFID)

I want to design an antenna that will work with RFID NFC chip NHS3152. The NHS3152 IC specs are: IC capacitance at precise measurement conditions For this particular IC, there is a demoboard. Since I ...
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2.4GHz extension for RC [closed]

I’m very new to this field. We just purchased a ride-on car for our toddler. Everything works well but the distance between remote and car is limited to approx 30 ft, which we were hoping to extend. ...
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2.4GHz BLE and 900MHz LoRa coexistence

I am working on a new design for a simple BLE to LoRa bridge. I have a chip antenna for LoRa that covers 868-915MHz and I was following the Nordic reference design for the 2.4GHz BLE antenna. What ...
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What part on this gate opener PCB is used for communication with the gate's antenna?

I am working on a project where I want to integrate my gate opener into a 5V car input device, to where when I get close to the gate it opens automatically without me needing to press a button. I have ...
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On which layers of 4 should the trace antenna be (433MHz)?

I have designed a simple PCB with the follow layers Top Layer, high speed traces (rest ground copper) Inner 1, Ground Copper area everywhere apart on the very left side where the trace antenna will ...
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2.4/5.8 GHz Microstrip Antenna Design

SE, I am trying to replicate the F-shape microstrip antenna design shown in: https://www.researchgate.net/publication/330747527_Dual-Band_Monopole_Antenna_for_RFID_Applications in Keysight's ADS, I ...
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How to separate PCB antenna and SMA connector?

I am designing a prototype PCB for a Lora node. It will have an SMA connector (J2) and a PCB antenna. Switching RF connectors are not available in my area, so as an amateur enthusiast what is a good ...
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PCB antenna connector and copper signal names

I am trying to build a PCB antenna similar to what is shown in this video. At the 6:24 mark it shows the circuit layout below: I am using Eagle to layout the PCB on a two layer board. ...
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Where should I place my RF test point?

So I am starting to make my first RF circuit board. We will be using a PSoC4 BLE chip as the transceiver. I'm doing my best to follow their application notes, specifically this one. I should add an ...
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Distance an inverted F antenna should be from the bottom and side edges of a PCB?

Distance from the bottom is usually either in the center of the PCB or close to the bottom edge with the length arm always pointing toward the farthest edge from the antenna position. CENTER? OR EDGE?...
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Is it beneficial to use a taper for the feed input of a PCB antenna?

What is your opinion on using a taper for the feed input of a PCB antenna? Say the feed is 2mm wide and the transmission line is 0.45 mm. Would a taper just cause more impedance mismatch? Or would it ...
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Electric Field of Patch Antenna

I am working on developing Patch antenna for 5G Applications. As the first step, I am trying to understand the working and properties of Microstrip patch antenna. All the resources I have read state ...
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Unsure about designing an ultra wide band antenna

So, a bit of background, I have designed and measured some antennas in college so I have a decent theoretical grasp of the subject, but they were optimized for a narrow band usage and certain ...
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I would like to know what this circuit is

I'm a engineer of embedded systems and I'm studying a 4G modem. The circuit has a component that I want to identify but the reference is apparently wrong. The reference printed in the circuit is ...
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Printed dipole vs ordinary (3D) dipole

In order to make a comparison between an ordinary (3D) half - wavelength dipole and its printed (planar version), I've done a simulation in both cases. Both were designed to work at 3GHz (100mm ...
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Circuit only works while touching the ground

so I am doing a small ESP8266 relay module. The relay is used as a SPDT switch so you can turn on the light with a normal switch on the wall but the module can shut them off after no motion is ...
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Bluetooth antenna problem with SIM800C on my board

I have designed a board with a SIM800C and I have followed all details with its given datasheet. Everything is working well except the Bluetooth that gives very low antenna strength (less than 10cm.) ...
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How to calculate impedance of a PCB trace Antenna in Altium w.r.t. a given frequency?

I am keeping things abstract as I intend to learn and not just copy another design. So, suppose I am trying to design an antenna of impedance Z and frequency f. Now, in Altium 18, there is a feature ...
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Capacitive Touch Pad Design with TTP224 ic

I am designing circular capacitive touch pads of Dia:20mm driving from TTP224 IC on my PCB. There will be 2mm glass panel above Touch pads. My PCB contains other circuits like Arduino, Antenna bands ...
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How to repurpose an old PCB?

I am brand new to electronics and would like to know if there's any way to reprogram the microcontroller or reuse a used PCB. I extracted this PCB from my old Bluetooth speakers. Here's the image: ...
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PCB manufacturing - Why etch resist such as Tin is removed after the etchant has removed the unwanted copper

Alright so I'm learning the PCB manufacturing process. I have seen many professional PCB manufactures use "Tin" to be used as an "etch resist" which protects the copper traces ...
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How to decide on laying out copper area when working with Wifi/RF chips & how to use a guard ring?

I have seen on several designs that the designer has avoided pouring copper around the RF signal lines and all signal lines in general. Such as seen on the following example. He has also added a "...
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Single trace width calculator for impedance matching

I would like to calculate the trace width of a dipole PCB antenna in order to match a 50ohm impedance. Obviously, there is no ground on the bottom side. All the impedance matching trace width ...
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nRF24 PCB Antenna Choices

I am trying to create RF module using the nRF24L01P. I am trying to maximize the range while still using a trace antenna. My plan is to combine the simple trace antenna design with the long range ...
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Near-field microwave antenna design

How to I design an antenna which produces a strong field within the antenna, but doesn't radiate out or reflect back to the source? (as much as possible) I'd like ideally to have a planar structure (...
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Circuit for selecting between PCB antenna and external

I'm just developing the second iteration of an 2.4Ghz sensor and receiver set. Because I can't afford the expensive development path of a big commercial project and because the environment these ...
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1/4 WL Strip Antenna Questions

I'm designing a module around the nRF52832 SOC and I need some help regarding the single-ended microstrip antenna. I have three questions, so please bear with me. The first question is about how wide ...
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How do I add an external Bluetooth antenna to this circuit?

I want to disconnect the PCB Bluetooth antenna and add a U.FL SMD for an external antenna. Can someone please advise me what to cut/add/solder?
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Calculating link budget

I was reading and found that there are different ways to calculate "link budget" and I want to know which one is correct because they are confusing to me. For example, some sources state ...
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Antenna Tuning for Source Impedance not equal to 50 Ohm

I have designed a setup for 433.92MHz wireless device (a key fob). The source impedance is not equal to 50Ohm. The load impedance may or may not be 50Ohm depending upon the choice of the antenna. For ...
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