Calculation of line of sight system gain Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern) Announcing the arrival of Valued Associate #679: Cesar Manara Unicorn Meta Zoo #1: Why another podcast?Assumptions for Hurst exponent calculationGain function calculation (frequency response)Magnitude-squared Coherence calculation inconsistenceCalculation of the correlation of two sinusoidalsSystem invertabilityDominant eigenvectors of an unknown matrixhow do you compute the channel gain from path loss index in wireless communication?Causal system, order of numerator and denominatorCalculation of actual analog input from bipolar ADC's outputcoding gain and shaping gain in SCMA
Plotting a Maclaurin series
Is the time—manner—place ordering of adverbials an oversimplification?
Can gravitational waves pass through a black hole?
Is a copyright notice with a non-existent name be invalid?
Keep at all times, the minus sign above aligned with minus sign below
Is this Kuo-toa homebrew race balanced?
Is it OK to use the testing sample to compare algorithms?
How to make an animal which can only breed for a certain number of generations?
Understanding piped commands in GNU/Linux
How do you cope with tons of web fonts when copying and pasting from web pages?
Why are current probes so expensive?
By what mechanism was the 2017 UK General Election called?
Does the Rock Gnome trait Artificer's Lore apply when you aren't proficient in History?
How to infer difference of population proportion between two groups when proportion is small?
Does a random sequence of vectors span a Hilbert space?
Besides transaction validation, are there any other uses of the Script language in Bitcoin
Inverse square law not accurate for non-point masses?
Improvising over quartal voicings
Where did Ptolemy compare the Earth to the distance of fixed stars?
Why did Bronn offer to be Tyrion Lannister's champion in trial by combat?
Getting representations of the Lie group out of representations of its Lie algebra
"Destructive power" carried by a B-52?
Short story about astronauts fertilizing soil with their own bodies
Problem with display of presentation
Calculation of line of sight system gain
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)
Announcing the arrival of Valued Associate #679: Cesar Manara
Unicorn Meta Zoo #1: Why another podcast?Assumptions for Hurst exponent calculationGain function calculation (frequency response)Magnitude-squared Coherence calculation inconsistenceCalculation of the correlation of two sinusoidalsSystem invertabilityDominant eigenvectors of an unknown matrixhow do you compute the channel gain from path loss index in wireless communication?Causal system, order of numerator and denominatorCalculation of actual analog input from bipolar ADC's outputcoding gain and shaping gain in SCMA
$begingroup$
I'm trying to calculate the overall gain of the transmitter-receiver system for a line-of-sight wireless transmission with the following properties:
- A carrier frequency of 0.5GHz
- A distance between the transmitter and receiver antennas of 2Km
- A parabolic antenna in the transmitter with a face area of 0.8m2
- An infinitesimal dipole in the receiver
From what I can understand/determine the equation for calculating gain is:
G = 4π*effective area/carrier wavelength/carrier wavelength OR
G = 4π*carrier frequency2*effective area/speed of light2
My question is how to calculate the overall gain of the system. Is it as simple as calculating the gain of the transmitter and receiver separately and then adding them together?
signal-analysis
asked 4 hours ago
Lily HaynesLily Haynes
61
New contributor
Lily Haynes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
I'm trying to calculate the overall gain of the transmitter-receiver system for a line-of-sight wireless transmission with the following properties:
- A carrier frequency of 0.5GHz
- A distance between the transmitter and receiver antennas of 2Km
- A parabolic antenna in the transmitter with a face area of 0.8m2
- An infinitesimal dipole in the receiver
From what I can understand/determine the equation for calculating gain is:
G = 4π*effective area/carrier wavelength/carrier wavelength OR
G = 4π*carrier frequency2*effective area/speed of light2
My question is how to calculate the overall gain of the system. Is it as simple as calculating the gain of the transmitter and receiver separately and then adding them together?
signal-analysis
asked 4 hours ago
Lily HaynesLily Haynes
61
New contributor
Lily Haynes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
I'm trying to calculate the overall gain of the transmitter-receiver system for a line-of-sight wireless transmission with the following properties:
- A carrier frequency of 0.5GHz
- A distance between the transmitter and receiver antennas of 2Km
- A parabolic antenna in the transmitter with a face area of 0.8m2
- An infinitesimal dipole in the receiver
From what I can understand/determine the equation for calculating gain is:
G = 4π*effective area/carrier wavelength/carrier wavelength OR
G = 4π*carrier frequency2*effective area/speed of light2
My question is how to calculate the overall gain of the system. Is it as simple as calculating the gain of the transmitter and receiver separately and then adding them together?
signal-analysis
asked 4 hours ago
Lily HaynesLily Haynes
61
New contributor
Lily Haynes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
I'm trying to calculate the overall gain of the transmitter-receiver system for a line-of-sight wireless transmission with the following properties:
- A carrier frequency of 0.5GHz
- A distance between the transmitter and receiver antennas of 2Km
- A parabolic antenna in the transmitter with a face area of 0.8m2
- An infinitesimal dipole in the receiver
From what I can understand/determine the equation for calculating gain is:
G = 4π*effective area/carrier wavelength/carrier wavelength OR
G = 4π*carrier frequency2*effective area/speed of light2
My question is how to calculate the overall gain of the system. Is it as simple as calculating the gain of the transmitter and receiver separately and then adding them together?
signal-analysis
signal-analysis
asked 4 hours ago
Lily HaynesLily Haynes
61
New contributor
Lily Haynes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Lily HaynesLily Haynes
61
New contributor
Lily Haynes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Lily HaynesLily Haynes
61
New contributor
Lily Haynes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Lily HaynesLily Haynes
61
asked 4 hours ago
Lily HaynesLily Haynes
61
61
New contributor
Lily Haynes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Lily Haynes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Lily Haynes is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
You need to multiply the antenna gains, not add them. Specifically, if the free-space loss (attenuation) is $L_FS$, the transmitter antenna has gain $G_T$, and the receiver antenna has gain $G_R$, then the total system loss $L$ is $$ L = fracL_FSG_T G_R. $$ The system gain $G$ is $$G = frac1L = G_FSG _T G_R, $$ where $G_FS$ is the free-space gain.
Of course, if you're doing the calculation in decibels, then the antenna gains are added: $$ G_dB = G_FS,dB + G_T,dB + G_R,dB. $$
answered 3 hours ago
MBazMBaz
9,08041734
$endgroup$
$begingroup$
Thank you that's really helpful but I'm a bit confused as to how to calculate the free-space gain that you talked about. I understand how to calculate the free-space loss, but I can't seem to find any information about free-space gain?
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
I focused on the gain since that is what you mention in your question. The gain is just the reciprocal of the loss: $G = 1/L$. If all you need is the loss, you can use the first formula in my answer; in decibels, it'd be $L_dB = L_FS,dB - G_T,dB - G_R,dB$.
$endgroup$
– MBaz
2 hours ago
$begingroup$
Perfect, I understand now, thank you for your help!
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
You're welcome; glad to be of help!
$endgroup$
– MBaz
2 hours ago
add a comment |
Your Answer
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "295"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Lily Haynes is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fdsp.stackexchange.com%2fquestions%2f56847%2fcalculation-of-line-of-sight-system-gain%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
You need to multiply the antenna gains, not add them. Specifically, if the free-space loss (attenuation) is $L_FS$, the transmitter antenna has gain $G_T$, and the receiver antenna has gain $G_R$, then the total system loss $L$ is $$ L = fracL_FSG_T G_R. $$ The system gain $G$ is $$G = frac1L = G_FSG _T G_R, $$ where $G_FS$ is the free-space gain.
Of course, if you're doing the calculation in decibels, then the antenna gains are added: $$ G_dB = G_FS,dB + G_T,dB + G_R,dB. $$
answered 3 hours ago
MBazMBaz
9,08041734
$endgroup$
$begingroup$
Thank you that's really helpful but I'm a bit confused as to how to calculate the free-space gain that you talked about. I understand how to calculate the free-space loss, but I can't seem to find any information about free-space gain?
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
I focused on the gain since that is what you mention in your question. The gain is just the reciprocal of the loss: $G = 1/L$. If all you need is the loss, you can use the first formula in my answer; in decibels, it'd be $L_dB = L_FS,dB - G_T,dB - G_R,dB$.
$endgroup$
– MBaz
2 hours ago
$begingroup$
Perfect, I understand now, thank you for your help!
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
You're welcome; glad to be of help!
$endgroup$
– MBaz
2 hours ago
add a comment |
$begingroup$
You need to multiply the antenna gains, not add them. Specifically, if the free-space loss (attenuation) is $L_FS$, the transmitter antenna has gain $G_T$, and the receiver antenna has gain $G_R$, then the total system loss $L$ is $$ L = fracL_FSG_T G_R. $$ The system gain $G$ is $$G = frac1L = G_FSG _T G_R, $$ where $G_FS$ is the free-space gain.
Of course, if you're doing the calculation in decibels, then the antenna gains are added: $$ G_dB = G_FS,dB + G_T,dB + G_R,dB. $$
answered 3 hours ago
MBazMBaz
9,08041734
$endgroup$
$begingroup$
Thank you that's really helpful but I'm a bit confused as to how to calculate the free-space gain that you talked about. I understand how to calculate the free-space loss, but I can't seem to find any information about free-space gain?
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
I focused on the gain since that is what you mention in your question. The gain is just the reciprocal of the loss: $G = 1/L$. If all you need is the loss, you can use the first formula in my answer; in decibels, it'd be $L_dB = L_FS,dB - G_T,dB - G_R,dB$.
$endgroup$
– MBaz
2 hours ago
$begingroup$
Perfect, I understand now, thank you for your help!
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
You're welcome; glad to be of help!
$endgroup$
– MBaz
2 hours ago
add a comment |
$begingroup$
You need to multiply the antenna gains, not add them. Specifically, if the free-space loss (attenuation) is $L_FS$, the transmitter antenna has gain $G_T$, and the receiver antenna has gain $G_R$, then the total system loss $L$ is $$ L = fracL_FSG_T G_R. $$ The system gain $G$ is $$G = frac1L = G_FSG _T G_R, $$ where $G_FS$ is the free-space gain.
Of course, if you're doing the calculation in decibels, then the antenna gains are added: $$ G_dB = G_FS,dB + G_T,dB + G_R,dB. $$
answered 3 hours ago
MBazMBaz
9,08041734
$endgroup$
You need to multiply the antenna gains, not add them. Specifically, if the free-space loss (attenuation) is $L_FS$, the transmitter antenna has gain $G_T$, and the receiver antenna has gain $G_R$, then the total system loss $L$ is $$ L = fracL_FSG_T G_R. $$ The system gain $G$ is $$G = frac1L = G_FSG _T G_R, $$ where $G_FS$ is the free-space gain.
Of course, if you're doing the calculation in decibels, then the antenna gains are added: $$ G_dB = G_FS,dB + G_T,dB + G_R,dB. $$
answered 3 hours ago
MBazMBaz
9,08041734
answered 3 hours ago
MBazMBaz
9,08041734
answered 3 hours ago
MBazMBaz
9,08041734
answered 3 hours ago
MBazMBaz
9,08041734
9,08041734
$begingroup$
Thank you that's really helpful but I'm a bit confused as to how to calculate the free-space gain that you talked about. I understand how to calculate the free-space loss, but I can't seem to find any information about free-space gain?
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
I focused on the gain since that is what you mention in your question. The gain is just the reciprocal of the loss: $G = 1/L$. If all you need is the loss, you can use the first formula in my answer; in decibels, it'd be $L_dB = L_FS,dB - G_T,dB - G_R,dB$.
$endgroup$
– MBaz
2 hours ago
$begingroup$
Perfect, I understand now, thank you for your help!
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
You're welcome; glad to be of help!
$endgroup$
– MBaz
2 hours ago
add a comment |
$begingroup$
Thank you that's really helpful but I'm a bit confused as to how to calculate the free-space gain that you talked about. I understand how to calculate the free-space loss, but I can't seem to find any information about free-space gain?
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
I focused on the gain since that is what you mention in your question. The gain is just the reciprocal of the loss: $G = 1/L$. If all you need is the loss, you can use the first formula in my answer; in decibels, it'd be $L_dB = L_FS,dB - G_T,dB - G_R,dB$.
$endgroup$
– MBaz
2 hours ago
$begingroup$
Perfect, I understand now, thank you for your help!
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
You're welcome; glad to be of help!
$endgroup$
– MBaz
2 hours ago
$begingroup$
Thank you that's really helpful but I'm a bit confused as to how to calculate the free-space gain that you talked about. I understand how to calculate the free-space loss, but I can't seem to find any information about free-space gain?
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
Thank you that's really helpful but I'm a bit confused as to how to calculate the free-space gain that you talked about. I understand how to calculate the free-space loss, but I can't seem to find any information about free-space gain?
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
I focused on the gain since that is what you mention in your question. The gain is just the reciprocal of the loss: $G = 1/L$. If all you need is the loss, you can use the first formula in my answer; in decibels, it'd be $L_dB = L_FS,dB - G_T,dB - G_R,dB$.
$endgroup$
– MBaz
2 hours ago
$begingroup$
I focused on the gain since that is what you mention in your question. The gain is just the reciprocal of the loss: $G = 1/L$. If all you need is the loss, you can use the first formula in my answer; in decibels, it'd be $L_dB = L_FS,dB - G_T,dB - G_R,dB$.
$endgroup$
– MBaz
2 hours ago
$begingroup$
Perfect, I understand now, thank you for your help!
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
Perfect, I understand now, thank you for your help!
$endgroup$
– Lily Haynes
2 hours ago
$begingroup$
You're welcome; glad to be of help!
$endgroup$
– MBaz
2 hours ago
$begingroup$
You're welcome; glad to be of help!
$endgroup$
– MBaz
2 hours ago
add a comment |
Lily Haynes is a new contributor. Be nice, and check out our Code of Conduct.
Lily Haynes is a new contributor. Be nice, and check out our Code of Conduct.
Lily Haynes is a new contributor. Be nice, and check out our Code of Conduct.
Lily Haynes is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to Signal Processing Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fdsp.stackexchange.com%2fquestions%2f56847%2fcalculation-of-line-of-sight-system-gain%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
