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[UWB] TX-RX voltage transform function - RF Cafe Forums
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kaka
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Post subject: [UWB] TX-RX voltage transform function
Posted: Thu Sep 22, 2005 9:59 pm
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Dear all : when we research uwb antennas , it
always need to compute the TX-RX voltage transform
function. i will appreciate Dr. Hans Schantz,
who is very famous in antenna field , he writes
a mail to me that hfss can do the tx-rx function
research. but he doesn't explain it in details .
and my question: how HFSS (or others software,if
you know) do this work ?and how to set in the software
? Does we simulate from one antenna's(Tx antenna)
and use hfss's some functions to get the tx-rx antenna
voltage transform function , OR , does we simulate
through both Tx-Rx antennas to get the transform
function ? i will appreciate your help very
much. Thanks in advance . woshifanka
ps : if you know ,please explain in some details
, and a *.hfss as a example will be appreciated
.
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UWB_antenna_guy |
Post subject:
Posted: Fri Sep 23, 2005 3:13 pm
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Colonel |
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Joined: Tue Aug 09, 2005
1:07 pm Posts: 28 |
you are right, Hans Schantz is a good guy... Why
don't you ask him your question? I work in
UWB myself, but I don't know what you are asking
for. What is the "TX-RX voltage transform function?"
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fanka |
Post subject:
Posted: Fri Sep 23, 2005 9:53 pm
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Dear UWB_antenna_guy: Thank you for your post
firstly. the tx-rx voltage function means: two
antennas, one is for transmit ,and another is for
receive . and they are departed in some distance
, for example, 3 feet. and we want to computer
the received voltage of the second antenna. and
i want use software to computer this tx-rx function.
fanka
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UWB_antenna_guy |
Post subject:
Posted: Mon Sep 26, 2005 9:34 am
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Colonel |
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Joined: Tue Aug 09, 2005
1:07 pm Posts: 28 |
fanka wrote:
Dear UWB_antenna_guy: Thank you for your
post firstly. the tx-rx voltage function
means: two antennas, one is for transmit ,and
another is for receive . and they are departed
in some distance , for example, 3 feet.
and we want to computer the received voltage
of the second antenna. and i want use software
to computer this tx-rx function. fanka
I really don't think that Hans Schantz suggested
to model both antennas and the separation in HFSS
for instance. Why don't you simply calculate S21
of the receiver antenna, S12 of the TX antenna and
calculate the received voltage that way?
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fanka |
Post subject:
Posted: Mon Sep 26, 2005 11:53 pm
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[/quote] I really don't think that Hans Schantz
suggested to model both antennas and the separation
in HFSS for instance. Why don't you simply calculate
S21 of the receiver antenna, S12 of the TX antenna
and calculate the received voltage that way?[/quote]
Dear sir: Yes , MR. Hans Schantz has suggested
me do calculate s21 of the receiver antenna ,which
is the same as you said . Now i have a question
, how to get the s21 easily ? should i make
a single antenna model can calculate its s parameter
and then use antenna array setting in HFSS and get
the S21 ? or other ways . can you tell me what
you do ? thanks you very much. Fanka
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UWB_antenna_guy |
Post subject:
Posted: Tue Sep 27, 2005 10:21 am
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Colonel |
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Joined: Tue Aug 09, 2005
1:07 pm Posts: 28 |
fanka wrote:
I really don't think that Hans Schantz suggested
to model both antennas and the separation in HFSS
for instance. Why don't you simply calculate S21
of the receiver antenna, S12 of the TX antenna and
calculate the received voltage that way?[/quote]
Dear sir: Yes , MR. Hans Schantz has suggested
me do calculate s21 of the receiver antenna ,which
is the same as you said . Now i have a question
, how to get the s21 easily ? should i make
a single antenna model can calculate its s parameter
and then use antenna array setting in HFSS and get
the S21 ? or other ways . can you tell me what
you do ? thanks you very much. Fanka[/quote]
I am not sure which simulation package you are
most familiar with. S21 is related to the antenna
gain and most simulators are able to determine the
antenna gain (and yes, best to setup a single antenna
model). I am not familiar with the array setting
in HFSS but you are not trying to setup an antenna
array.
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Guest |
Post subject:
Posted: Thu Sep 29, 2005 10:14 pm
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UWB_antenna_guy wrote:
I am not sure which simulation package
you are most familiar with. S21 is related to
the antenna gain and most simulators are able
to determine the antenna gain (and yes, best
to setup a single antenna model). I am not familiar
with the array setting in HFSS but you are not
trying to setup an antenna array.
hi sir : sorry firstly for my delay
reply as my net is bad for several days till
now , i use HFSS sv . yes, when we built a single
antenna model , hfss can calculate its gain (FEM).
i read some references before , and remember they
calculate the S21 through two antenna (TX adn RX)
so i wana ask you how can i calculate the S21
only through one antenna in hfss ? many thanks .
woshifanka
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Posted 11/12/2012
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