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1. Annular ring antenna design equations

annular ring antenna Hi ! I'd like to design an annular ring slot antenna for 2.4 GHz. Could someone kindly point me out in the right direction as to how to design one (inner and outer radius specification etc) for a given substrate of dielectric constant er and thickness. I have tried to...
2. Annular Ring Patch antenna Basic deign concept

patch antenna basics Who can share Basic deign concept of Annular Ring Patch antenna For example. the relationship between rad/ centre freq
3. What is the concept of Compact microstrip resonant cell-CMRC

What is the concept of Compact microstrip resonant cell-CMRC? Why it can employ to design for size reduction???

Mepg coding...Help Any one can help me....??
5. Using fourier and laplace transform to solve PDE

PDE is type of heat equation. Where have above reference notes? Many book only gives an example of solving heat equation using fourier transform. An exercise asks me to solve it for using fourier and laplace transform: In the heat equation, we'd take the fourier transform with respect to x...
6. Fourier transform convolution Question! Please

O....I have some idea now But I want to start at F {f(t)g(t)} = ∫[1/2pi ∫F(ω)e^iωt dω 1/2pi ∫G(ω)e^iωt dω ] e^-iωt dt How to express to 1/2pi ∫ [1/2pi∫F(ζ)G(ω-ζ)dζ]e^jωtdω >__<
7. Fourier transform convolution Question! Please

Given F[f(t)*g(t)] = F(ω)G(ω) , where * = convolution F(f(t)) = F(ω) ; F(g(t)) =G(ω) How to prove F[f(t)g(t)] = 1/2pi [ F(w)*G(w)] I have to do - F^-1(F(ω)) = 1/2pi ∫F(ω)e^iωt dω = f(t) F^-1(G(ω)) = 1/2pi ∫G(ω)e^iωt dω = g(t) F[f(t)g(t)] = F[F^-1(F(ω))F^-1(G(ω))] =...
8. How can I use n- enhancement MOSFET as a switch??? (THANKS)

Please look at the circuit How can I use HIGH/ LOW to control the MOSFET to ON/OFF?? i.e 1)If Gate >5V.........the path between drain and source = close circuit the load is come to vdd 2)If Gate =0V.........the path between drain and source = open circuit Thanks

a, b,h is constant how to solve it? thx??

disadvantage of vlsi What is the advantage and disadvantage of implementing VLSI using deep submicron MOS device?? thank
11. What is the operation principle of ROM, SRAM and DRAM cell?

thanks................
12. what is the Boolean Equation of 2bit full adder???

you mean that you know the S0 but you want us to post the S1, right ? YES REIGHT.. please post S1 and Cout...of 2-bit full adder...Thanks
13. what is the Boolean Equation of 2bit full adder???

O...sorry How about 2- bit full adder?? I can nit find in the powerpoint attached file Because I found that the S0 S1 and carry is very complex I found S0 is similar to 1 bit full adder....I also is A0 XOR B0 XOR Cin but S1 is very complex Any one can help....thank
14. what is the Boolean Equation of 2bit full adder???

input A0 A1 B0 B1 Cin output Sum0 Sum1 Cout.... Thx a lot

16. What is the impact on the static transfer characteristics...

What is the impact on the static transfer characteristics reducing the power supply from 5V to 3V of i) NMOS and ii) CMOS gates Thanks
17. Something about Digital to Analog Converter

I had an error over then 20mV <----CORRECTION Added after 1 minutes: how to add -20mV offset...??? Thanks~~ Added after 29 minutes: How to reduce the output nosic?
18. Something about Digital to Analog Converter

Yes, I knew that the IC has a zero code error,the data sheet is said about 0.5mVpp but, I had an error over then 2mV Besides,the reference gound is common with the all circuity ground How to solve it~~~Please~~~
19. Something about Digital to Analog Converter

I am used a AD5678 -2 (16 bit 2.5V internal Ref) DAC http://www.analog.com/UploadedFiles/Data_Sheets/102142943AD5678_a.pdf **broken link removed** When I put all 0 in the DAC...It still occurs 0.002V How can I reduce the output noise and solve the zero code error??? Please give a...
20. +/-15V power supply using LM317 and LM337 regulator ICs

+/- 15v power supply I have try to design the circuit.... Is it Right?? +15 V -15V THX **broken link removed**