Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [ground-plane]

The tag has no usage guidance.

0
votes
2answers
66 views

Do I need a ground polygon for analog design?

I have an analog circuit with few opamps (max freq. 500Hz) and a DC-DC converter with 500 kHz frequency for power supply. It seems I need to use both sides of PCB for components and routing if I use 2 ...
0
votes
1answer
51 views

Does a lithium battery make a good ground plane?

A patch antenna I'm using calls for a 50mm x 50mm ground plane under it, mostly to cut multipath reflections in the bottom lobe. Naturally, the closer to the antenna and the more conductive the ground ...
0
votes
0answers
20 views

Connecting Ground Paths

I am using a stm32f407vgtx to control full bridge drivers which drive a H bridge of 4 N-channel Mosfet. I don't have any idea about grounding. I am thinking of using two separate ground AGND (ground ...
0
votes
1answer
41 views

Multiple ground planes, single point ground, and a level shifter

I'm using a level shifter to go from 3.3V to 5V (digital/analog). According to the datasheet, if I put 1 ground on the left side of the IC and the other on the right, it would tie the grounds together ...
1
vote
1answer
121 views

Does this criss-crossed GND plane look like it will function properly?

I'll be using it at 12 MHz and... not the best parts placement resulted in this board layout. So I am asking more experienced people if it will definitely not work or maybe it will. Thanks! edit I ...
1
vote
0answers
38 views

Checkered / square-patterned copper plane on a PCB [duplicate]

The Verge has published photos of the original iPhone "dev kit". The board looks like an ordinary development kit to me, however there is a strange pattern of squares on the topmost layer. I know ...
3
votes
1answer
120 views

Shaping ground plane on a 4 layer USB Midi controller PCB

I have asked about this before but I have to admit that I didn't read enough before asking and therefore was'nt able to ask the question properly. I hope I am now. I'm designing a 4 layer board with ...
1
vote
3answers
122 views

Ground Plane Tips for Beginners

I have made a few PCB's over the past few months as I have started to learn about design. All of the circuit boards have been Arduino based, so nothing to powerful. I design them up in Eagle and I ...
1
vote
3answers
151 views

Routing VCC with jumpers?

I'm trying to route a new VHF RF receiver (LO is 151MHz, RF is 162MHz). There's a pair of LC filters on this board, as well as a Si5351 oscillator and a crystal. From what I've read, an uninterrupted ...
3
votes
1answer
193 views

Shield in Inner Copper Layer

I have been designing second version of 4 Layer PCB. The PCB has connectors all over the PCB. In the first version, I had Copper Pour (I call it ...
0
votes
0answers
54 views

my i2s audio signal is not working. i expect this has something to do with ground and resistors, but i need some help with the details

I am more familiar with software, but I have a project going on that has a tiny amount of hardware involved. I would really appreciate some help with this part. I have existing hardware that has a ...
2
votes
1answer
80 views

Ground plane: is there a tool to identify choke points of a fragmented copper polygon in Eagle?

As they say a picture says a thousand words. Consider this extreme example: You have this copper polygon (a ground plane), but due to other signals routed on the same layer, the polygon comes to a ...
-1
votes
3answers
82 views

Sensor damage, ground loop or something else?

We are testing an capacitive fuel level sensor in field. Its mounted on top of a heavy construction vehicle (colmar) with a 24v battery system. Our sensor runs for few weeks and damages. Every time a ...
0
votes
1answer
69 views

Does a Vcc layer cause noise to a 4-layer RF PCB?

I'm designing a 4 layer GPS tracker PCB with the 2nd layer as ground and 3rd as Vcc. Is this a good practice? I know a gnd layer is good but I'm not sure how to distribute the positive of the supply ...
3
votes
3answers
940 views

How do I know where to put stitching vias?

I'm working on a PCB that allows me to attach a TSSOP IO expander to a breadboard more easily for experimenting. I asked a question regarding the configuration of decoupling capacitors for an IC with ...
0
votes
2answers
71 views

does adding Vias through the antenna feed line change impedance?

I have a GPS through-hole patch antenna, the through hole need to be connected to the bottom layer and then from there the feed-line flows to the GPS receiver. But I want the GPS receiver to be on top ...
1
vote
2answers
58 views

How exactly a ground plane helps inproving antenna gain? What is the logic behind it?

How exactly a ground plane helps inproving antenna gain? What is the logic behind it? As per my general understanding, ground plane in reference to any perticular signal trace on PCB helps to absorb ...
0
votes
0answers
73 views

4 Layer board with high current return path inner layer

So I am doing a layout for a 4 layer PCB 1 ounce/layer. The Chip supports up to 20A (motor controller driver). The application needs about 12 amps max ( I plan it let it go up to 17A in the event of ...
0
votes
1answer
94 views

What is the purpose of this grid on the ground plane near a wifi antenna?

The PCB for this Steam Link has a grid of squares near the antenna. It also has pads for what I guess is either testing or adding 0ohm resisters. What is the purpose of this feature, and why are ...
0
votes
1answer
114 views

Can the USB port's metal enclosure be grounded?

As shown in the image below, the USB port's metal enclosure is touching the copper clad of the PCB (which is a ground plane). Can Bad Things Happen™ if the port's enclosure is grounded? I beep-...
0
votes
1answer
62 views

Split Ground plane with motor drivers

This is a PCB with few stepper drivers. I have a question about the ground plane. I have this idea to split the ground plane for each driver, so, I force the return path to pass through the capacitor....
0
votes
1answer
181 views

Manufacturers' recommendations for ground plane for GPS patch antennas

I see requirements for specific ground plane sizes in many GPS antenna datasheets, but I also see many devices that ship with significantly smaller ground planes. Do these integrators know something ...
0
votes
1answer
49 views

Issues with designing ground plane for switching relays in high noise environment

I am designing a PC Controlled 8 channel Relay using AVR microcontroller. Here, the relays are on the right side of the board and are controlled by the AVR micro on the left side. The eight TTL ...
0
votes
1answer
79 views

Good PCB Design - Single Power Plane with 2 Power supplies (+ve & -ve)

Recently I've taken over a project which requires low noise but the design given to myself does not meet the requirements. I noticed on the PCB design It has a single Power Plane with 2 separate ...
1
vote
0answers
46 views

Eagle or Gerber ground plane analysis

I was wondering if anyone knows of a simple tool that gives you something like a heat map that is resistance to ground of different parts of the ground plane in a PCB. What I am particularly after is ...
1
vote
2answers
168 views

Are multiple groundplanes a good idea on a 4-layer pcb?

I'm working on a design of a 4-layer PCB. The stackup is like this: Top: signal Inner 1: power distribution traces and copper fill (VCC) in some areas Inner 2: signal Bottom: ground plane There ...
0
votes
0answers
168 views

Altium: Via stitching not connecting to plane?

I'm experiencing an issue in altium where my Via stitching vias on the GND net will not connect to my ground plane. Individually placed vias will connect fine through from the top layer polygon GND ...
1
vote
1answer
272 views

PCB multiple ground planes

I am designing a two layer PCB. Two part schematic is shown in attached figures. In the circuit, I am getting four gate signals from FPGA of 3.3V and and error signal, also of 3.3V as inputs and I ...
1
vote
1answer
70 views

Suggestions on soldering through hole large planes

I am small scale manufacturing PCB's I designed for high power actuator and LED control. It is 6"x8", 2 ounce copper and large power and ground planes, with no thermal reliefs. It has a section at one ...
2
votes
1answer
233 views

Ground and earth layers on PCB

I am designing a digital board with USB input and output. Shield of USB is connected to a chassis ground as per USB specs and connected to GND through a R and C in parallel USB power has a common ...
0
votes
2answers
92 views

analog ground and digital ground question

I'm designing a CCD control circuit and have some questions. 1.Should the ground in the 1st and 2nd position in the oval be analog ground or digital ground? 2.If they should be the DGND, whether ...
0
votes
2answers
185 views

Via stitching removes solid ground plane

I read in some places that having a solid ground plane is needed . Does not via stithing causing the solid ground plane to become broken? Is this okay? Also when everyone talks about return current, ...
2
votes
1answer
75 views

Tuning Fork Crystal grounding

This post is very helpful, but I'm still a little unsure about my crystal layout. This is a 4-layer board with top_signal->ground->+5V->bottom_signal stackup. The crystal is a 32.767KHz tuning fork ...
0
votes
1answer
222 views

Extra small RF PCB antenna - GND plane

My new PCB design is about 25 mm * 25 mm, this is not enough for a proper 868 MHz antenna ground plane, I am using the 0868AT43A0020 chip antenna where at least a 20 mm * 40 mm GND plane is required. ...
2
votes
2answers
210 views

What does “minimum etch technique” refer to in PCB layout/design?

in the application hints for an ADC (AD7927 page 26) it says: The printed circuit board that houses the AD7927 should be designed such that the analog and digital sections are separated and ...
4
votes
3answers
370 views

PCB Layout Help (with schematics!) - Split ground plane or not?

Obligatory "not an EE, just a ChemE trying to make some pressure readings for science"! Schematic attached, along with my current layout. It's a 6-channel pressure sensor using MPX4115AP sensors and ...
0
votes
1answer
85 views

PCB power planes and routing question

Ok this is my first time trying some kind of reverse engineering and I have few experiences in PCB testing so it may be a basic question. Basically I am trying to get the schematics for an 8 channel ...
0
votes
1answer
194 views

Eagle help- vias won't connect to GND plane

I'm trying to place some 100W wire wound resistors on my board and I'm going to be using my ground plane and some vias as my heat sink. I have a polygon labelled "GND" on both sides enclosed by a stop ...
2
votes
1answer
183 views

How to connect four different ground planes in the same PCB?

I am working on a project which uses the LTC4020 multi-chemistry battery charger from Linear Technology. The design includes a microcontroller ( NXP KL25Z) to provide additional outputs and ...
0
votes
1answer
123 views

2 Layer PCB Copper Pour on the bottom layer

I am an amateur PCB designer. Trying to design my first PCB. It's a two layer board with ESP8266 module. I have read lot about ground plane and copper pour at the bottom layer. I have tried to use all ...
0
votes
4answers
540 views

Is a copper pour redundant on the top layer of a multilayer (>= 4) board with a ground plane?

In a multilayer board with a GND plane directly under the top layer, does adding a copper pour to the top layer give extra value in terms of reducing crosstalk and EMI? If all signal traces already ...
2
votes
1answer
936 views

Ground planes on 2 layer PCB

I know there are multiple questions about this topic, but I didn't found an exact answer to my question. My situation: I'm having a 2 layer PCB. On the PCB there are multiple SMD components and ...
3
votes
1answer
286 views

smps and ground layer (4 layer PCB)

I am designing a 4 layer smps (low noise) and I have a some design philosophy questions . Under the transformer (that separates primary from secondary) should I extend the ground planes ( one primary ...
0
votes
1answer
38 views

Eagle ground consistency

I am designing a two side PCB in eagle. I have placed top and bottom ground pour. After using the autorouter, the ground islands have very little connection to each other, and there are completely ...
2
votes
2answers
244 views

Noise issues Atmega power line

I have designed a PCB that has a Atemga328 chip, connected to 6 logic level MosFETs via the PWM lines of the chip. The board is primarily designed to run long lines of led strips. Turning them on, ...
1
vote
0answers
176 views

OrCAD Allegro PCB Designer Ground Plane

i want to assign a black color to Ground Plane (GND 0), it's shape is polygon and it's color is gray like shown on below image, i have two questions: is this a possible polygon shape to implement ? ...
4
votes
2answers
401 views

Power and Ground planes The Henry Ott way or split ground planes

Seeing a lot of mixed infomation around involving ground planes on multilayer boards. For a mixed signal mulitlayer PCB which is the preferred method? I know every board is different and it depends ...
-1
votes
1answer
198 views

Grounding considerations for 2018, and DVdd/Avdd connections [closed]

So, here we go again with the typical "what's the best ground layout?" question. Seems this question has different answers depending on the application, manufacturer, and decade. From what I've read,...
2
votes
3answers
2k views

Eagle: Connect polygons / ground planes

How can I connect polygons 1 and 2 together? It tried to make a trace + vias between them, but Eagle won't let me create a trace on a polygon.
0
votes
2answers
88 views

What/How many devices to put in one local ground net?

I feel that this is a stupid question but I have really no idea how to answer it. Looking at this answer first part and of course the other answer it's pointing to, I understand that high frequency ...