參數(shù)資料
型號(hào): UAA1570HL
廠商: NXP SEMICONDUCTORS
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Global Positioning System (GPS)baseband processor(通用定位系統(tǒng)基帶處理器)
中文描述: SPECIALTY TELECOM CIRCUIT, PQFP48
封裝: PLASTIC, SOT-313, LQFP-48
文件頁(yè)數(shù): 19/76頁(yè)
文件大?。?/td> 890K
代理商: UAA1570HL
1999 May 10
19
Philips Semiconductors
Product specification
Global Positioning System (GPS) front-end
receiver circuit
UAA1570HL
7.1.6
G
ENERAL REMARKS AND RESULTS
The RF match has an important effect on the gains, noise figure, and dynamic characteristics of the RF system blocks.
Reflection coefficients better than
15 dB are easily attainable and can be improved to better than
25 dB with attention
to details.
In the following graph (see Fig.10) the solid trace G
LNA
(dB) represents the measured frequency response of the
UAA1570HL LNAs as measured on a spectrum analyzer, while the dotted and dashed results were obtained using a
noise figure meter over a more restricted frequency range.
Fig.9 Typical LNA fundamental, 2nd and 3rd-order product output levels as a function of input level.
(1) Fundamental output.
(2) 3rd-order product output.
(3) 2nd-order product output.
handbook, halfpage
(dBm)
90
70
50
10
100
20
0
MHB272
30
40
60
80
input (dBm)
(2)
(3)
(1)
Fig.10 Typical LNA gain and noise figure as a function of frequency (50
power matched on the input and
output).
(1) LNA gain (dB).
(2) Power gain.
(3) Noise figure.
handbook, halfpage
GLNA
(dB)
MHB273
0
1000
2000
3000
20
10
10
0
f (MHz)
(2)
(3)
(1)
15.3
3.68
1575.42
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