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2021 High quality Antenna Coil - Inductor air coil – Mingda

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2021 High quality Antenna Coil - Inductor air coil – Mingda Detail:

Air coil models an air core coil inductor with centered axial leads. Coil and lead dimensions are configurable.

We have exported this kind of SMD inductor coil mainly to USA, UK, Germany, Korea and Canada.

Advantages:

1.Customized according to your unique request

2.Very high precision

3. All products 100% tested

4. Build to confirm ROHS compliant

5.Short lead time and quick sample

6. Pick and place process possible

7. Good solderability (tinned connector pins)

8.Tape&Reel packaging

Size and dimensions:

Size and dimensions

ID+0.1/-0 .05 TURNS

A(REF)

B(REF)

C±0.2

3

11

6.5

3.8

1. 5

Parameters

Name Description
ID Subcircuit ID
NET Subcircuit name
*M Multiplicity factor – not used for this model
NTurns Number of turns
WireDia Diameter of the wire
CoilDia Coil inner diameter
Pitch Distance between turns, measured from wire center-to-center
LeadLen Length of lead
LeadOff Offset distance between coil body and beginning of lead
LeadType Type of lead contact: 0=round post, 1=bottom flat tab, 2=lofted flat tab
TabLenRatio Ratio of tab length to total lead length for LeadType=1 or 2. 0<TabLenRatio<1
Rho Bulk resistivity of conductor metal normalized to gold

Application:

1. Satellite communication systems

2. Test equipment and microwave equipment

3.Television circuits.

4.Transmitters and band pass filters.

Do you need an air coil?

What are the advantages of an air core coil?

Its inductance is unaffected by the current it carries. This contrasts with the situation with coils using ferromagnetic cores whose inductance tends to reach a peak at moderate field strengths before dropping towards zero as saturation approaches. Sometimes non-linearity in the magnetization curve can be tolerated; for example in switching converters. In circuits such as audio cross over networks in hi-fi speaker systems you must avoid distortion; then you need an air coil. Most radio transmitters rely on air coils to prevent the production of harmonics.

Air coils are also free of the ‘iron losses’ which affect ferromagnetic cores. As frequency is increased this advantage becomes progressively more important. You obtain better Q-factor, greater efficiency, greater power handling, and less distortion.

Lastly, air coils can be designed to perform at frequencies as high as 1 Ghz. Most ferromagnetic cores tend to be rather lossy above 100 MHz.

And the ‘downside’?

Without a high permeability core you must have more and/or larger turns to achieve a given inductance value. More turns means larger coils, lower self-resonance and higher copper loss. At higher frequencies you generally don’t need high inductance, so this is then less of a problem.

Greater stray field radiation and pickup. With the closed magnetic paths used in cored inductors radiation is much less serious. As the diameter increases towards a wavelength (lambda = c / f), loss due to electromagnetic radiation will become significant. Balanis has the gory details. You may be able to reduce this problem by enclosing the coil in a screen, or by mounting it at right angles to other coils it may be coupling with.

You may be using an air cored coil not because you require a circuit element with a specific inductance per se but because your coil is used as a proximity sensor, loop antenna, induction heater, Tesla coil, electromagnet, magnetometer head or deflection yoke etc. Then an external field may be what you want.


Product detail pictures:

2021 High quality Antenna Coil - Inductor air coil – Mingda detail pictures


Related Product Guide:
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Our products are widely recognized and trusted by users and can meet continuously developing economic and social needs for 2021 High quality Antenna Coil - Inductor air coil – Mingda , The product will supply to all over the world, such as: Philippines, Houston, Dominica, Customer satisfaction is our first goal. Our mission is to pursue the superlative quality, making continual progress. We sincerely welcome you to make progress hand in hand with us, and construct a prosperous future together.
  • This company conforms to the market requirement and joins in the market competition by its high quality product, this is an enterprise that have Chinese spirit.
    5 Stars By Quyen Staten from Bangkok - 2018.09.29 17:23
    With a positive attitude of "regard the market, regard the custom, regard the science", the company works actively to do research and development. Hope we have a future business relationships and achieving mutual success.
    5 Stars By Nicole from Benin - 2018.06.18 19:26
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