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# Minimum Distance

86 Threads found on edaboard.com: Minimum Distance

## minmum separation between the wearable antenna and body

how to calculate the minimum separation between body and wearable antennas. if it's very small the absorption because of body will be high and and also it effects the input impedance and the radiation pattern of the antenna. one good approximation is to be keep the distance of (2d2/lambda) from the body for which results are close to a free space

## Android to SD card wireless

Which one to choose Bluetooth or wifiAs the 2 options are considered, some of your requirements points to the Bluetooth option ( short distance, just 2 files, minimum complexity ).

## Hard macro placement when no pins face each other

Suppose I have 2 hard macros and both of them do not have any pins facing each other. In such a scenario, can I keep those 2 macros at close proximity? Or is there any minimum distance criteria even if there are no pins on the face to face sides of the hard macros?

## How to calculate UWB radar minimum detect distance and resolution?

Hi, All, I found a UWB chip as attachment. Now I want to know: 1. Its minimum detect distance. I know the maximum distance can be calculated by PRF etc, but how to calculate the minimum detect distance? 2. How to calculate the resolution of the UWB radar? 3. What's the difference, which impact detect (...)

## How to distinguish faces after from minimum and maximum eigen distance for facial rec

Hi all! I'm coding for a real time face recognition application in Matlab. I have written the algorithm for face recognition and it calculates the maximum and minimum euclide distance values. Upto that point it works fine. But I'm stuck on how to distinguish faces using these values. Any help is appreciated.

## twisted waveguide minimum length?

hi all. i want to design a twisted waveguide (WRD650). i saw in the manufactured twisted waveguides that the manufacturers set the length of the waveguide about twice times of maximum wavelength. i have to design it with shorter length. is there any rule of thumb for designing twist waveguides? thank you in advance

## IR couple? What should I take in account choosing ones?

max distance with minimum power can be traded off with speed of data and modulation. IR wavelength does not matter much as long as receiver bandwidth includes transmitter and you have a daylight blocking filter. Path loss is inverse squared, so smallest beam angle in emitter is desirable Power per bit can be computed as VI*t from transmitt

## Ultrasonic Sensor HC-SR04

You have to considere the "spot area" of ultrasonic sensor depending of the distance.. maybe you can place your sensor at 220 cm instead 300cm .. 99,99% of people will pass under without problem.. for taller people , cut the head! so you will have minimum of spot diameter corresponding to the head top surface. this system use 2 device , one emitte

## mobile antenna as a rectenna

but now i have picked it and i will have to do it so please guide me in designing an antenna which can receive a minimum 1mV at a distance of minimum of 40 meters. what power and voltage you need? What application is this?! If you will be more specific somebody can tell you solution!

## Shadow Length For solar tracking

do you really want to adjust the panels tilt angle, or determine the minimum distance between panels? The reason for tracking is to maximize solar collection, but if you are adjusting the angle , it is conflicting with the objective!

## Hamming Code for the Detection of two bit errors

Hamming codes are single-error correcting codes, so the minimum distance is 3. Adding another parity bit, it is possible to increase the minimum distance to 4 and detect double bit errors. Look for "extended Hamming code". Regards Z

## IC615 Virtuoso LIVE DRC highlight

Hi, I've used Cadence 5 and there used to be option to dynamically highlight DRC errors as yellow polygons. For example, if you 'move'ed the transistor too close to another Pcell transistor such that you were violating the DRC for minimum distance between two layers, there would appear a yellow box showing the DRC. However, I recently used Caden

## Minimum distance for straight joint between Medium voltage cables?

While laying the Medium Voltage electrical cables especially Underground is there any standard exists who tell about the minimum distance of straight joint that can be installed to join the MV cables. There is nothing either good or bad but thinking makes it so. (William Shakespeare).

## What is minimum distance between microstrip patches?

You can put then very close together (with the smallest separation), but what do you actually want to achieve? -maximum gain given a minimum number of patches? -Relative clean pattern (with or without feed taper)? When you place them very close together (for example using high dielectric substrate), you will have large interaction and increased de

## ErrorHFSS: A radiation boundary face has solid objects with SolveInside on both sides

did you reassign a conductor (bottom) as radiation instead of conductor? double check ports. something is wrong in the -20dB case. look through the help pages about radiation boundaries for the conditions you should meet. there's something about minimum distance from conductors. Also with no boundaries assigned the outer box is perfect conductor.

## Distance Between a Line Segment and a Point???

Are you looking for the distance between the (point A) and a the (point B) on the line segment that is the minimum distance from the (point A), or are you looking for the distance between (Point A) and the mid point of the line segment?

## Convolutional codes (error correction)

...If a convolutional code is said to correct 2 errors what does it mean exactly ?... The amount of detectable bit errors is related to minimum distance d parameter. For instance, d=2 means that 2 bits can be

## for error corrction using reed solomon or sutable method

Hi In order to do error correction of even a single bit you require minimum distance of code to be at least 3. By Hamming bound you can easily find that for un-coded data length of 8 bits, minimum redundancy required is that of 4 bits. So, you cannot correct errors with only three bits of redundancy. If you add one more bit to the code (...)

## analog pcb using allegro16.3

Can we presume that track widths and minimum distance design rules have been choosen according to electrical requirements (voltage and current)? Then it should be O.K. Reviewing some layout details, I have doubts about a plausible selection of trace widths. But that's just a guess that can't be checked without a schematic.

## Co secant square pattern minimum distance coverage

Hi all, I need to find the minimum distance that is covered by the Co secant square pattern antenna, please let me know if there are any calculations regarding the same.

## Wall Avoiding Robot programming with CCS C

sharp GP2D12 has minimum obstacle detection range . in 0-20cm range sensor data will be invalid. sharp GP2D12 output is a linear voltage according to distance I hope this will help

## distance between two macros

Well chiranjeevinaidu in your case you expect the macro is block over all metal layers? Because in general the memories macro are block up metal3 and ROM up metal4, then the router could route over themacroand only minimum space to respect the DRC is required between two macros. And after you should need to increased the space a lot of wire need to

## CADSTAR help with DRC

Which design rule sets the minimum allowed distance between a drilled via/pad hole and an inner layer route or plane (the arrow in the picture)? 86761

## Exploration Array design

Hello, I have to design an exploration (scanning) array antenna with 7 dipoles and Dolph-Chebyshev feeding. The width of the main lobe has to be minimum. I have some doubts about how the visible margin is with this sort of feeding. I have to calculate the distance between dipoles. If someone could help me with this design I would appreciate.

## Image processing through matlab

Want to segment a gray scale image using MDL(minimum Description Length) in Matlab.Want a step by step procedure

## Levitating ping-pong ball

Hey, This project I'm working on is about making a ping-pong ball float in a transparent plastic tube at a specified distance relative to the proximity sensor (infrared). The ball should float with minimum oscillations. A small ventilator at the base of the tube is used to push the ball up. The fan has a brushless motor controlled through a d

## Minimum transmitter and receiver distance

Hi all, i am wondering what is minimal distance between receiver and transmitter, because when I put close to each other, class 1 Bluetooth transmitter, on the receiving side, I am receiving packets within wrong channel. Channel number is fixed in transmitter. Thank you

## Minimum distance b/w 2 macros ??

Hi friends , can somebody give the correct equation for this ?? Thanks in advance.

## REG: Pathloss Exponent using Minimum Mean Square Error estimate

Hi all, I need to calculate the pathloss exponent (n) using MMSE estimate. I have done some calculations and trying it in Matlab to find n. By theoretical calculations, i got n=4.4 but i dint get it while implementing in Matlab. please check Matlab code below which i have tried. d=; %%%distance in metres do=100; %%%

## Minimum distance b/w reflecting surfaces(mirrors) which gives output to same IRsensor

Hi ! Can any one give me an idea that how close i can use magnets /also mirrors so that they don't interfere with each other.When i put used IR sensor in such away that multiple reflecting mirrors are rotating around it then what is the minimum distance between two reflecting surfaces(mirrors) so that we can get the differentiated output? Thank

## hfss transient simulation

Hi I have some questions about transient analysis in hfss 13. First what does minimum radiating distance mean in PML setup wizard? Why it is fixed on 100 mm. Also why frequencies extracted do fixed at 901 and I appreciate if we can change it? And what does the plot of residual on a log scale mean?

## briefly explain about Guard rings in CMOS

There are two uses for guard rings. One is to make the lowest practical Rb on the parasitic transistor structure. Some foundries only require that you respect a minimum "distance to tap" but a guardring can improve this worst case extrinsic base resistance by a couple of decades. In flows where the looser construction style is allowed in the core

## what should be the minimum antenna distance for a repeater without duplexer?

guys, i'm building a UHF repeater. It's on GMRS freq. My location is in Bangladesh. I'm planning to just use two 4W HTs as a TX and RX. as said, GMRS, means UHF, the separation will be 5MHz. Say GMRS ch 1. Now, I will also use a 45W Base for the same project (2 different location, 2 different purpose). As this is a total homebrew issue and

## Best Baud rate for RF 433 Module error reduction

Hi, I want to send data via UART with a minimum error rate to a distance upto 20 meter using cheap RF433 module which do not have any datasheet... I am using Pic 16F877A with a crystal of 8Mhz... So for reducing error rate which is the best baud rate which i can set.... Also i cannot use manchester code as its out of use in mikroC library

## How dense could a manual solderer solder?

Hi, In IPC-7351, table 3-4 to table 3-14 contain the defined ?courtyard excess? for placement density level A, B and C. According to Note 3 on page 1, definitions in this IPC-7351 standard are for reflow soldering. 65714 In prototyping however, can I ask a solderer to solder level C spacing board? Take cap

## 13.56 MHz power amp, antenna and buffer design

There are two points involved with your project. - achieving the minimum required field strength at the tag location. I would calculate ISO 14443 specified 1.5 A/m as a first guess. Probably a value between 0.5 and 1 A/m can be sufficient. - receiving the tag signal Did you calculate the loop voltage required for 1 A/m in 1 m distance. It's se

## Background Suppression Sensor Reciever selection and placement

Hi, I want to develop a photoelectric diffused background suppression sensor with 1.8 m sensing distance. For that which receiver is suitable for this project?.And also what is the minimum distance between the emitter and receiver?

## My layout which is made by Encounter cannot pass DRC

I made a T-flipflop by using RTL_compiler and Encounter, export it to GDSII file, and run DRC on virtuoso. However, this layout cannot pass the DRC. This is because the distance of standard cells are too close, so it cannot satisfy minimum distance between P-well and N-well. In addition, the via in power routing are not made on virtuoso (...)

## 200 meter video transmission

I am working on a remote controlled reconnaissance robot to help the combat troops,so i need to transmit video to a distance of 200 meter. i have bought a camera which can even work at zero lux,now i need a Rx Tx set for transmission to 150 meters minimum distance.can any one help???

## Hard Vs LLR demodulation of QAM symbols

I found the answer. Hard decoding is based on minimum Euclidean distance. This gives the optimum estimate of SYMBOLS. But in LLR demodulation BITS are estimated NOT symbols. LLR gives a reliability measure for each estimated bit. The bigger this number, the more precise the estimate. One major use of this is in decoding of M-ary modulated convoluti

## Altium Designer setting design rule for distance between lines on mechanical layer

Hello, I want to specify the minimum distance between lines on a mechanical layer. There is no problem to do that between signal layers but I couldn't find any rule for mechanical layers. I need it because some components from my library have the outline on mechanical 15 layer and it would be handy to have a rule that doesn't allow to put them

## laser distance measurement meter

Have you the skills to design such a circuit? If you work out the time it takes light to travel one centimetre the it will give you an idea of the sort of circuitry required. It is not a beginners task. You need to be able to design optics and work with very small optical powers. You need to define your minimum distance as well. Keith

## different cmos process

tanks for ur reply ted....from the analog layout point of view .13um , .18um are different technologies my question is exactly on wat basis they r different??i mean is it the minimum gate length or sometng like that regards arun

## Minimum scribe line distance to active devices?

Hi, I'm finishing a design on AMS H35B4 tech, but my chip does not have PADs on all sides... I'm not sure if I indeed need to put the scribe line on my design, of if just the min. width MET1 path is enough... in any case, my real question is: what is the minimum distance I should put my circuit from this line? Surprisingly, I could not find t

## how to improve the coupling coefficient of on-chip CMOS transformer

If you decrease the distance between the spirs, coupling will be improved. Use minimum DR for you process and try..

## Intercom for four users

design and implement an intercom system that could enable communication between four clients within 10m distance between them.the minimum specifications are mentioned below. 1.any two of the fours users could communicate each other without disturbing other users 2.if any two are using line all four units must show engaged indicator by means of

## Regarding error detection and correction

CRC is better and more reliable for detecting data integrity. Use a good polynomial. Checksum is more simple and easy, but it unsure. For instante, checksum is unable to detect the lack of "zeros" words. On the other hand, minimum Hamming distance with checksum is 2; with a good CRC is always higher. Regards Z P.S.: why put you this post in

## optical communication link in free space

Everything depends upon the link budget. You should specify your receiver's minimum input power (or noise level), bandwidth, distance, like when you design a radio link. Then, with the available transmitter power and known propagation loss, you should calculate receiver S/N ratio. If your budget results not positive, you should consider increasing

## How to amplify a RF transmitter and receiver module?

i believe you also need to do an analysis on the sensitivity of your design based on the characteristics you have on the other end (LNA,NF) and also gain from each antenna/free space insertion loss. Then you ll know the minimum power you have to have on the Rx for an specific distance. cheers

## How to consider Synchronous DCDC buck converter output stage

Just respect all the PDK's ESD & latch-up rules: extended s/d widths (possibly partial) salicide blocking double (p+ & n+) guard rings for each powerMOS minimum distances