ARIB 8494B, Руководство пользователя, Страница: 33 / 39

ARIB STD-T91
-27-
From Equation (1) and (2),  can be obtained by making
T
a=
T
0
as in the Equation (3).
) 3 (
1
0
L
⎭
⎬
⎫
⎩
⎨
⎧
⎟
⎠
⎞
⎜
⎝
⎛ −
− =
L
F kT
G
M
L
α
As shown in the Equation (3),  can be calculated when AMP gain (G) and noise figure
(F) are obtained.
(7) Measured results of the measurement example
Parameters set in the measurement example are shown in Table A3-5, and the
measured results in Table A3-6, respectively. The estimated value for unwanted emission
intensity at 600 MHz has become -111.3 dBm / MHz by making a band conversion upon
obtaining  from the measured values.
Table A3-5 Parameters for the measurement example
Item Unit 600 MHz
log antilog
L 6+1.3 dB 5.37
k J / K (W•s) 1.38 E-23
T
0
K 290
G 36-0.4 dB 3631
F 3.9 dB 2.45
L : ATT+(Cable loss + ATT insertion loss + LPF insertion loss)
G : AMP gain - cable loss
Table A3-6 Measured results
Item ATT
[dB]
600 MHz
M 6 -134.2 dBm / Hz
 -111.3 dBm / MHz
1.2.3 A design example for UWB radio equipment
A configuration of UWB radio equipment using filter is shown in Figure A3-3. In the figure,
transmitter of the UWB radio equipment (hereinafter referred to as “UWB transmitter”), filter
and antenna are connected. The receiver as well as controller of the UWB radio equipment are