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why do resonant inductive coupling circuit operate at high frequencies?
Clash Royale CLAN TAG#URR8PPP
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Just as the title says. Whenever I read a research paper on wireless power transfer via resonant inductive coupling the authors just mention frequencies that range in the kHz and Mhz range, but none of them explain why high frequencies must be used.
wireless resonance wireless-charging
asked 3 hours ago
DigiNin Gravy
969
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up vote
1
down vote
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Just as the title says. Whenever I read a research paper on wireless power transfer via resonant inductive coupling the authors just mention frequencies that range in the kHz and Mhz range, but none of them explain why high frequencies must be used.
wireless resonance wireless-charging
asked 3 hours ago
DigiNin Gravy
969
in terms of electronics, kHz and MHz is hardly 'high frequencies'. In fact, in my field, that is all considered 'that DC rubbish we have to get rid of'.
– Joren Vaes
3 hours ago
Can you please tell me why you don't use these low frequencies in your field? I am having a hard time understanding the advantages of high frequency...
– DigiNin Gravy
3 hours ago
1
That in-and-of-itself is a question I have literally written chapters of books about, and would be too broad for a stack exchange question. It mainly comes down to bandwidth and wavelength (and corresponding antenna size).
– Joren Vaes
3 hours ago
Above 20 kHz has the advantage that it's mostly inaudible. Lower frequencies would make an annoying whine from the inductors. Listen to the 400/800 Hz tone on top of the cabin announcements in a plane.
– tomnexus
3 hours ago
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
Just as the title says. Whenever I read a research paper on wireless power transfer via resonant inductive coupling the authors just mention frequencies that range in the kHz and Mhz range, but none of them explain why high frequencies must be used.
wireless resonance wireless-charging
asked 3 hours ago
DigiNin Gravy
969
Just as the title says. Whenever I read a research paper on wireless power transfer via resonant inductive coupling the authors just mention frequencies that range in the kHz and Mhz range, but none of them explain why high frequencies must be used.
wireless resonance wireless-charging
wireless resonance wireless-charging
asked 3 hours ago
DigiNin Gravy
969
asked 3 hours ago
DigiNin Gravy
969
asked 3 hours ago
DigiNin Gravy
969
asked 3 hours ago
DigiNin Gravy
969
asked 3 hours ago
DigiNin Gravy
969
969
in terms of electronics, kHz and MHz is hardly 'high frequencies'. In fact, in my field, that is all considered 'that DC rubbish we have to get rid of'.
– Joren Vaes
3 hours ago
Can you please tell me why you don't use these low frequencies in your field? I am having a hard time understanding the advantages of high frequency...
– DigiNin Gravy
3 hours ago
1
That in-and-of-itself is a question I have literally written chapters of books about, and would be too broad for a stack exchange question. It mainly comes down to bandwidth and wavelength (and corresponding antenna size).
– Joren Vaes
3 hours ago
Above 20 kHz has the advantage that it's mostly inaudible. Lower frequencies would make an annoying whine from the inductors. Listen to the 400/800 Hz tone on top of the cabin announcements in a plane.
– tomnexus
3 hours ago
add a comment |Â
in terms of electronics, kHz and MHz is hardly 'high frequencies'. In fact, in my field, that is all considered 'that DC rubbish we have to get rid of'.
– Joren Vaes
3 hours ago
Can you please tell me why you don't use these low frequencies in your field? I am having a hard time understanding the advantages of high frequency...
– DigiNin Gravy
3 hours ago
1
That in-and-of-itself is a question I have literally written chapters of books about, and would be too broad for a stack exchange question. It mainly comes down to bandwidth and wavelength (and corresponding antenna size).
– Joren Vaes
3 hours ago
Above 20 kHz has the advantage that it's mostly inaudible. Lower frequencies would make an annoying whine from the inductors. Listen to the 400/800 Hz tone on top of the cabin announcements in a plane.
– tomnexus
3 hours ago
in terms of electronics, kHz and MHz is hardly 'high frequencies'. In fact, in my field, that is all considered 'that DC rubbish we have to get rid of'.
– Joren Vaes
3 hours ago
in terms of electronics, kHz and MHz is hardly 'high frequencies'. In fact, in my field, that is all considered 'that DC rubbish we have to get rid of'.
– Joren Vaes
3 hours ago
Can you please tell me why you don't use these low frequencies in your field? I am having a hard time understanding the advantages of high frequency...
– DigiNin Gravy
3 hours ago
Can you please tell me why you don't use these low frequencies in your field? I am having a hard time understanding the advantages of high frequency...
– DigiNin Gravy
3 hours ago
1
1
That in-and-of-itself is a question I have literally written chapters of books about, and would be too broad for a stack exchange question. It mainly comes down to bandwidth and wavelength (and corresponding antenna size).
– Joren Vaes
3 hours ago
That in-and-of-itself is a question I have literally written chapters of books about, and would be too broad for a stack exchange question. It mainly comes down to bandwidth and wavelength (and corresponding antenna size).
– Joren Vaes
3 hours ago
Above 20 kHz has the advantage that it's mostly inaudible. Lower frequencies would make an annoying whine from the inductors. Listen to the 400/800 Hz tone on top of the cabin announcements in a plane.
– tomnexus
3 hours ago
Above 20 kHz has the advantage that it's mostly inaudible. Lower frequencies would make an annoying whine from the inductors. Listen to the 400/800 Hz tone on top of the cabin announcements in a plane.
– tomnexus
3 hours ago
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
3
down vote
accepted
Low frequency resonant tuned circuits require high values of inductance and capacitance. High value and power efficient inductors cost money and are big thus, they don't easily find much use in resonant inductive coupling applications.
Added to this is that near field passive card readers read data from passive tags by the tag itself modulating the incoming magnetic field and, if that magnetic field is low frequency then the data rate that can be modulated is much lower. This would lead to slow data transaction time.
answered 3 hours ago
Andy aka
232k10172395
3
I addition, the higher switching frequencies means it takes less capacitance for smooth it out to a good DC, which again means smaller and cheaper components on a PCB. Going too high in frequency would result in you running into issues with range and Q-factor of circuits.
– Joren Vaes
3 hours ago
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
3
down vote
accepted
Low frequency resonant tuned circuits require high values of inductance and capacitance. High value and power efficient inductors cost money and are big thus, they don't easily find much use in resonant inductive coupling applications.
Added to this is that near field passive card readers read data from passive tags by the tag itself modulating the incoming magnetic field and, if that magnetic field is low frequency then the data rate that can be modulated is much lower. This would lead to slow data transaction time.
answered 3 hours ago
Andy aka
232k10172395
3
I addition, the higher switching frequencies means it takes less capacitance for smooth it out to a good DC, which again means smaller and cheaper components on a PCB. Going too high in frequency would result in you running into issues with range and Q-factor of circuits.
– Joren Vaes
3 hours ago
add a comment |Â
up vote
3
down vote
accepted
Low frequency resonant tuned circuits require high values of inductance and capacitance. High value and power efficient inductors cost money and are big thus, they don't easily find much use in resonant inductive coupling applications.
Added to this is that near field passive card readers read data from passive tags by the tag itself modulating the incoming magnetic field and, if that magnetic field is low frequency then the data rate that can be modulated is much lower. This would lead to slow data transaction time.
answered 3 hours ago
Andy aka
232k10172395
3
I addition, the higher switching frequencies means it takes less capacitance for smooth it out to a good DC, which again means smaller and cheaper components on a PCB. Going too high in frequency would result in you running into issues with range and Q-factor of circuits.
– Joren Vaes
3 hours ago
add a comment |Â
up vote
3
down vote
accepted
up vote
3
down vote
accepted
Low frequency resonant tuned circuits require high values of inductance and capacitance. High value and power efficient inductors cost money and are big thus, they don't easily find much use in resonant inductive coupling applications.
Added to this is that near field passive card readers read data from passive tags by the tag itself modulating the incoming magnetic field and, if that magnetic field is low frequency then the data rate that can be modulated is much lower. This would lead to slow data transaction time.
answered 3 hours ago
Andy aka
232k10172395
Low frequency resonant tuned circuits require high values of inductance and capacitance. High value and power efficient inductors cost money and are big thus, they don't easily find much use in resonant inductive coupling applications.
Added to this is that near field passive card readers read data from passive tags by the tag itself modulating the incoming magnetic field and, if that magnetic field is low frequency then the data rate that can be modulated is much lower. This would lead to slow data transaction time.
answered 3 hours ago
Andy aka
232k10172395
answered 3 hours ago
Andy aka
232k10172395
answered 3 hours ago
Andy aka
232k10172395
answered 3 hours ago
Andy aka
232k10172395
232k10172395
3
I addition, the higher switching frequencies means it takes less capacitance for smooth it out to a good DC, which again means smaller and cheaper components on a PCB. Going too high in frequency would result in you running into issues with range and Q-factor of circuits.
– Joren Vaes
3 hours ago
add a comment |Â
3
I addition, the higher switching frequencies means it takes less capacitance for smooth it out to a good DC, which again means smaller and cheaper components on a PCB. Going too high in frequency would result in you running into issues with range and Q-factor of circuits.
– Joren Vaes
3 hours ago
3
3
I addition, the higher switching frequencies means it takes less capacitance for smooth it out to a good DC, which again means smaller and cheaper components on a PCB. Going too high in frequency would result in you running into issues with range and Q-factor of circuits.
– Joren Vaes
3 hours ago
I addition, the higher switching frequencies means it takes less capacitance for smooth it out to a good DC, which again means smaller and cheaper components on a PCB. Going too high in frequency would result in you running into issues with range and Q-factor of circuits.
– Joren Vaes
3 hours ago
add a comment |Â
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in terms of electronics, kHz and MHz is hardly 'high frequencies'. In fact, in my field, that is all considered 'that DC rubbish we have to get rid of'.
– Joren Vaes
3 hours ago
Can you please tell me why you don't use these low frequencies in your field? I am having a hard time understanding the advantages of high frequency...
– DigiNin Gravy
3 hours ago
1
That in-and-of-itself is a question I have literally written chapters of books about, and would be too broad for a stack exchange question. It mainly comes down to bandwidth and wavelength (and corresponding antenna size).
– Joren Vaes
3 hours ago
Above 20 kHz has the advantage that it's mostly inaudible. Lower frequencies would make an annoying whine from the inductors. Listen to the 400/800 Hz tone on top of the cabin announcements in a plane.
– tomnexus
3 hours ago