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Questions tagged [phased-array]

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35 questions
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2 votes
1 answer
166 views

I want to do a little experiment and create a phased array out of an RPI, and a PCIe LimeSDR XTRX(s). Is this possible?
Marcus Müller's user avatar
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1 vote
1 answer
94 views

I have a AV2011 satcom antenna that has a Merrimac QHF-2-.312GN power divider/combiner that's good for 225mhz to 400mhz and I'd to replace it with a wider bandwidth version buuut this series doesn't ...
Community's user avatar
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1 vote
0 answers
61 views

I am using an Rx antenna array (4 antennas), and a TX transmitter. Without changing my location of both transmitter and receiver as well as modifying my array geometry, I am measuring different phase ...
Xingda Chen's user avatar
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1 vote
3 answers
2k views

For a $N$-element planar phased array, all the elements are same isotropic antennas. Then, what is the effective area of this array? Is it $$A_e=\frac{\lambda^2}{4\pi}GN$$ where $G$ is the directivity ...
Mike Waters's user avatar
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0 votes
1 answer
1k views

I am wanting to build 2 x 4 element vertical yagi antennas for 28 MHz and co-phase them and feed with one 50 ohm coaxial transmission line. If i were to use a gamma match for each yagi and tune them ...
tomnexus's user avatar
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4 votes
1 answer
1k views

Background In a lot of literature regarding satellite communications with phased arrays, you'd see this kind of image: Conceptually, I get the basic concept of how this works - a bunch of small ...
Marcus Müller's user avatar
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3 votes
2 answers
1k views

Consider an array with same isotropic antennas, $P_{ele}^n$ is the input power of the nth antenna. As I consider antenna radiation efficiency = 1, the $P_{ele}^n$ is also the radiated power of the nth ...
sm5bsz's user avatar
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1 vote
4 answers
576 views

Construct 2 similar flow graph in Gnuradio,just different with data type. complex type data has a correct result.But ...
Phil Frost - W8II's user avatar
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6 votes
2 answers
888 views

Is it possible to have a network of separate (but co-located) 'receivers' (antenna + adc) act as a phased array receiver? Supposing one can get very precise timestamping on each receiver, couldn't all ...
uhoh's user avatar
  • 553
4 votes
2 answers
499 views

Consider a normal array model with $N$ element. The output of the array is given by, $$\mathbf{y}=\mathbf{w}^H\mathbf{x}=\mathbf{w}^H\mathbf{as}$$ where $\mathbf{a}=[a_1,...,a_N]^T=\in\mathbb{C}^{N\...
hotpaw2's user avatar
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1 vote
1 answer
435 views

it's well known that in a linear and equispaced antenna array, the array factor is equal to: The array is then called uniform if $|I_n| = I$ is the same for all elements. The phase terms $\angle I_n$ ...
tomnexus's user avatar
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2 votes
1 answer
259 views

let's consider a simple linear uniform spaced array: We know that, from elementary array theory, the total pattern (for instance in terms of E-field) may be evaluated, in case no phase shift is ...
tomnexus's user avatar
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2 votes
2 answers
462 views

let's consider this two planar biconical dipoles of total length and width each one 10mm, at a distance D = 25.6mm. They are excited with the discrete ports in the picture, which corresponds in this ...
tomnexus's user avatar
  • 12.5k
2 votes
1 answer
172 views

Let's consider a simple antenna array. For instance, this three-elements equispaced dipole array: Each dipole is connected to a signal voltage source. It's well known that it's possible to choose the ...
hotpaw2's user avatar
  • 13.7k
1 vote
1 answer
178 views

Can I use 2 identical rubber ducky antennas with a splitter on my CB HT radio to improve range?
Mike Waters's user avatar
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