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Type: Posts; User: Rosalinekavitha

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1. ## Thread: How to choose optimal wire width of spiral coil to attain high q factor?

by Rosalinekavitha
Replies
6
Views
715

### Closed: Re: How to choose optimal wire width of spiral coil to attain high q factor?

For various values of wire radius, pitch and internal radius (given that fixed outer diameter) have been simulated using HFSS. It shows that least value of Q is 8 n maximum is 467267. Is this maximum...
2. ## Thread: How to choose optimal wire width of spiral coil to attain high q factor?

by Rosalinekavitha
Replies
6
Views
715

### Closed: Re: How to choose optimal wire width of spiral coil to attain high q factor?

Thanks for your valuable suggestion. Nice n informative.
3. ## Thread: How to choose optimal wire width of spiral coil to attain high q factor?

by Rosalinekavitha
Replies
6
Views
715

### Closed: How to choose optimal wire width of spiral coil to attain high q factor?

How to choose optimal wire width of spiral coil to attain high q factor? There are formula to calculate optimal turns n pitch. Is it by trail n error to choose wire width?
4. ## Thread: Resonating the coil in HFSS

by Rosalinekavitha
Replies
9
Views
1,397

### Closed: Re: Resonating the coil in HFSS

S(1,1) converges around 10MHZ. Delta S has been set to 0.01 and maximum passes are set to 8. Message manager shows that adaptive passes didnot converge. When passes are set to 12 it shows Matrix...
5. ## Thread: Resonating the coil in HFSS

by Rosalinekavitha
Replies
9
Views
1,397

### Closed: Re: Resonating the coil in HFSS

I am new to WPT n coils. I am trying to replica the paper[DOI 10.1109/10.1109.10.1109]. Followed the same procedure as in page 4 using HFSS.
6. ## Thread: Resonating the coil in HFSS

by Rosalinekavitha
Replies
9
Views
1,397

### Closed: Re: Resonating the coil in HFSS

Thanks for all your responses. I have extracted inductance value from im(z(1,1)) from hfss and calculated Capacitance value using resonant frequency formula. In HFSS i have used lumped port, so...
7. ## Thread: Resonating the coil in HFSS

by Rosalinekavitha
Replies
9
Views
1,397

### Closed: Re: Resonating the coil in HFSS

Thanks again Volker. How to choose R & C so as to achieve efficient power transfer. I have designed Capacitor value based on C = 1/L(2*pi*f)^2. How to get dip curve of S11. Any hint or reference?
...
8. ## Thread: Resonating the coil in HFSS

by Rosalinekavitha
Replies
9
Views
1,397

### Closed: Resonating the coil in HFSS

Hi,
The inductance of the spiral coil obtained is 96.0429nH. The capacitance & Resistor i have defined using lumped port is -6.1 ohm and 50 ohm.
[The calculated value of capacitor to acheive...
9. ## Thread: Defining Lumped port in 3D spiral coil for different values of sweep in HFSS

by Rosalinekavitha
Replies
2
Views
523

### [SOLVED]Closed: Re: Defining Lumped port in 3D spiral coil for different values of sweep in HFSS

Hi, thanks for your prompt response. Sounds good idea. Earlier i have tried this option by creating two separate variables one for port n other for coil. Let me try it properly again. Other than...
10. ## Thread: Defining Lumped port in 3D spiral coil for different values of sweep in HFSS

by Rosalinekavitha
Replies
2
Views
523

### [SOLVED]Closed: Defining Lumped port in 3D spiral coil for different values of sweep in HFSS

Hi, i am trying to compute power transfer efficiency between coils using HFSS. When the Rxer coil sweeps coaxially (manual operation), i found the port is detached from terminals. In parametric...
11. ## Thread: Solving for derivative wrt 'variable name', for mode 1 out of 1 for H-field

by Rosalinekavitha
Replies
2
Views
550

### Closed: Re: Solving for derivative wrt 'variable name', for mode 1 out of 1 for H-field

variable name i have used is Z. But the error persist.
12. ## Thread: Solving for derivative wrt 'variable name', for mode 1 out of 1 for H-field

by Rosalinekavitha
Replies
2
Views
550

### Closed: Solving for derivative wrt 'variable name', for mode 1 out of 1 for H-field

Hi, what does the warning mean?
13. ## Thread: Impedance of Z(1,1) is not 50 ohm in HFSS

by Rosalinekavitha
Replies
5
Views
1,437

### [SOLVED]Closed: Re: Impedance of Z(1,1) is not 50 ohm in HFSS

Issue fixed. Inductance value is around 637nH. Thank you.
14. ## Thread: Impedance of Z(1,1) is not 50 ohm in HFSS

by Rosalinekavitha
Replies
5
Views
1,437

### [SOLVED]Closed: Re: Impedance of Z(1,1) is not 50 ohm in HFSS

Hi.. thanks for your prompt response.

Hi Volker.. thanks for your valuable suggestion. I have defined the port between terminals using rectangular sheet. The data table shows some non-zero values....
15. ## Thread: Impedance of Z(1,1) is not 50 ohm in HFSS

by Rosalinekavitha
Replies
5
Views
1,437

### [SOLVED]Closed: Impedance of Z(1,1) is not 50 ohm in HFSS

Hi, i have designed the 3D spiral coil using HFSS and terminated it with 50 ohm impedance using single Lumped port. But the data table of Z(1,1) shows resistance value in terms of milliohms. What...
16. ## Thread: Assigning boundary and Lumped port to 3D spiral coils in HFSS

by Rosalinekavitha
Replies
7
Views
1,523

### [SOLVED]Closed: Re: Assigning port and boundaries to 3D spiral coil in HFSS/error fixed

Hi Volker, thanks for your suggestion. Here I have defined lumped port in between terminals as you said, and I have defined integration line between the terminals(conductors). Its working.. thank you.
17. ## Thread: Assigning boundary and Lumped port to 3D spiral coils in HFSS

by Rosalinekavitha
Replies
7
Views
1,523

### [SOLVED]Closed: Re: Assigning port and boundaries to 3D spiral coil in HFSS

hi volker, here i have defined port between two terminals. solution setup used is driven modal and excitation is lumped port. but still the error persist.
18. ## Thread: Assigning boundary and Lumped port to 3D spiral coils in HFSS

by Rosalinekavitha
Replies
7
Views
1,523

### [SOLVED]Closed: Re: Assigning boundary and Lumped port to 3D spiral coils in HFSS

Hi, i think defining + and - terminal can be defined using waveport. Currently am using modal solution setup and lumped port. its asking for integration line but not terminals. Let me make changes to...
19. ## Thread: Assigning boundary and Lumped port to 3D spiral coils in HFSS

by Rosalinekavitha
Replies
7
Views
1,523

### [SOLVED]Closed: Assigning port and boundaries to 3D spiral coil in HFSS

Hi volker , thanks for your reply. Here i have assigned lumped port to all the 4 terminals of txer n rxer coil.
Can u make me clear how to assign port and boundaries between 2 terminals, type of...
20. ## Thread: Assigning boundary and Lumped port to 3D spiral coils in HFSS

by Rosalinekavitha
Replies
7
Views
1,523

### [SOLVED]Closed: Assigning boundary and Lumped port to 3D spiral coils in HFSS

Hi,
i am trying to simulate the mutual inductance of 3D spiral coils for wireless power transfer application. While simulating the coil terminals with lumped port following warning occurs

...
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