A waveguide is a physical structure that guides electromagnetic or sound waves. They are most commonly employed at high frequencies such as microwave.
Questions tagged [waveguide]
93 questions
16
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Why are rectangular waveguides not used for inter-city transmission?
Waveguides can transmit very high powers, isolating the signal from external noises and interferences. Besides, waveguides have a very low loss. These capabilities make them an interesting candidate for signal transmission between two cities. Why…
user215721
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Which stackup to choose for JLPCB FR4 up to ~10GHz
I am aware that 10GHz on FR4 is not ideal, but this is an hobby project and I can tolerate some losses. The 10GHz on the PCB is minimal (probably only a short coplanar waveguide or microstrip with 2 passive components to an SMA connector).
I am…
Waldorf
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Can I improve the directivity of an X-band radar module with integrated plane-patch antenna?
Lots of detail provided in case it's needed.
I'm continuing to tinker with remote proximity sensors driven by an Arduino (and eventually just an ATMEGA* chip and its safety buddies) and have a pretty good prototype so far. It picks up motion just…
Joshua Nozzi
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8
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Differences between a planar coil and coplanar waveguide to create a local 1D AC magnetic field
Coplanar waveguides (for example picture look here) are often used in research to create a local in-plane magnetic field. Now if compared to a planar microcoil like this,
driven by a AC voltage in the 1-5 GHz range, what would be the major…
James Last
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Design of cavity filter
I try to design a Chebyshev bandpass filter for 6 GHz as a coaxial cavity filter. I know that the filter can be designed with the aid of the coupling coefficients between the resonators and the loaded Q of the first and last resonator, and all…
T. Pluess
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What are the advantages of CPW over microstrip?
I have to use a coplanar waveguide (CPW) for a project which is going to characterise small amounts of tissue. I have never used CPW before.
What are the advantages of using CPW? What would be some key words for searches to get me started and help…
GracefulMango
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Standard 2.54/1.27mm pinheader impedance
Note
I turned my answer into something of a collection of free impedance calculators..
I was thinking of using one of the most ubiquitous connectors in the world - 2.54mm pin header. The snag here is that I need to push a relatively high frequency…
Barleyman
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What are the waveguide modes of twisted pairs as discussed here?
From the recent Lightwave article ASSIA exec touts terabit-speed DSL:
In a keynote address delivered earlier this week at the G.fast Summit in Paris, Dr. John Cioffi, chairman and CEO of DSL management optimization software supplier Adaptive…
uhoh
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What makes the band of an antenna broader than others?
Even though I'm studying waveguide slot antennas, so the examples that I'm going to give are related to this topic, my question covers a wider range of topics.
I already know about a couple of things:
The concept behind frequency independent…
Tripola
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What is the simple meaning of TE10 waveguide
What does this numeral 10 represents and why do we have TE10 TE11 and then TE20. Where are the rest?
rishabh jain
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Plane wave causing TE mode in waveguide
I've been struggling with a problem given to us during a exercise-session of waveguides.
First part of the exercise was calculating the electric field inside of a waveguide in the form of 2 parallel plates, with it being a TE1 mode. This was simple…
Tom
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Why is it that a TEM mode propagates in a - Two separate conductor wave guide?
Please someone explain to me in Simple English or Basic equations as to why does a Transverse Electric and Magnetic Modes(TEM) propagate on only two surface Wave guide like a coaxial or a parallel plate wave guide?
Ishank
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Contact pad size for microprobe coaxial to planar waveguide transition
http://www.ggb.com/t-4.html
What size should one choose at minimum/maximum for the pads and what role the pitch plays (besides impedance matching)? If I order a 100 micron tip diameter Ground Signal Ground GSG probe for contacting a coplanar…
James Last
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4
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Tapering of planar waveguides
Can anybody recommend some literature or explain some rules of thumb for tapering planar waveguides? As I understand correct tapering is needed for example for bended waveguides or like in the picture below to increase magnetic ac field of the line…
James Last
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4
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Unexpected low characteristic impedance using the JLCPCB impedance calculator
I'm currently designing a PCB that is intended to fan out the 38 pins of a MICTOR connector to every other conductor of an 80-conductor ribbon cable (The PATA type one, that is AWG30 wires with a 0.063mm / 25mil spacing). Just as PATA, I intend to…
Michael Karcher
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