Questions tagged [microwave]
Microwaves are radio waves with a frequency from 300MHz to 300GHz which corresponds to a wavelength of one meter down to one millimeter. Often in RF engineering however it is used to refer to a narrower region such as 1 to 100GHz.
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Is there a simple approximation for B-field strength of a loop antenna when driven at 10 GHz?
I have a near-field loop antenna that I'm applying a microwave field to at 10 GHz. I'd like to have it interact with a small magnet that is much smaller than the loop. Here's a picture with the little ...
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Numbers in Generating Phase Coherent Electronic Systems
I am reading the following paper 'Störmer’s numbers in generating phase coherent electronic systems' written in 1969.
More or less I understand that
in microwave applications there is clearly a use ...
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How to solder the central pin of the TGA 2214-CP microwave amplifier
Here is datasheet of the TGA 2214-CP amplifier: TGA 2214-CP
The pins can be seen on page 11. It turns out that pin 7 and 9 are very close to the central pin 1, as well as pin 8 and 10 to pin 2 (about ...
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Finding old rf components datasheets
I've just received a load of old rf components used for X-W band and am at a loss for where to find information on them. A lot of the parts are from TRG division of Alpha Industries Inc. and it seems ...
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Simple method to generate nonuniform magnetic radiation in a region of 0.5 mm?
I need an antenna that can generate a nonuniform magnetic field over a very tiny region at 5 GHz. (By nonuniform, I mean that the field vectors are diverging as much as possible. I will place this ...
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Microwave magnetron connections reversable F, FA?
The two connections on a microwave magnetron are labeled F (filament) and FA (filament anode), both being either ends of a heated filament powered by a 3V AC supply, and the FA connection being ...
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Transmission Lines and Waveguides - How to calculate Intrinsic Impedance?
I have come across a problem when calculating the attenuation due to conductor losses for circular cross sections:
A circular copper waveguide has a radius of 0.4 cm and is filled with a dielectric ...
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Troubles in understanding the TGA2214-CP microwave power amplifier datasheet
The datasheet of the Qorvo microwave amplifier is here.
I have troubles with the following points:
In p. 9, they give a schematic of the way to mount the amplifier (I believe).
But at the end of the ...
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Time average stored electric energy in a volume
I am studying the book Microwave Engineering Third Edition by David M. Pozar. At the moment I am at chapter 1.6. At the beginning of this chapter Pozar states that
In the sinusoidal steady-state case,...
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Substituting for 1N34A diode to change range of microwave detector
In connection to an earlier question, this DIY device for detecting "mini radio" EMF seemed like it might work to detect microwaves generally, assuming diodes exist to replace the 1N34A ...
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How can I visualize 24 GHz RF on a screen?
Is there a (preferably inexpensive) way to visualize/image 24 GHz RF from a radar gun (of the type used to check baseball speeds) on a screen?
Here are some examples of what I mean, for other ...
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Add resonances to monopole antenna
How can I design a "simple" low frequency monopole antenna with multiple resonating frequencies?
I elaborate...
I need to design a sort of monopole antenna with multiple resonating ...
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S-parameter of cascaded system, port impdance
I have a question about the s parameter of the cascades system.
Assuming that there are two system A,B as shown in the figure and each has an s-parameter measured at 50ohm port,
I understand that the ...
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De-Embedding Structures
I am trying to de-embed the attached ports and gnd plane to measure characteristic impedance of transmission lines in between the two port/small TLs.
I have tried techniques on
https://www.doe....
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EMF Meter: difference between AC magnetic, AC electric, and RF Measurements
let's consider this EMF Meter. Regarding its description, I have some doubts regarding what it is physically trying to measure:
Detects all three types of EMF pollution: AC magnetic, AC electric, and ...
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