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參數資料
| 型號： | AD8349 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 700 MHz to 2700 MHz Quadrature Modulator |
| 中文描述： | 700兆赫至2700 MHz正交調制器 |
| 文件頁數： | 20/28頁 |
| 文件大小： | 969K |
| 代理商： | AD8349 |
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AD8349
SINGLE SIDEBAND PERFORMANCE VERSUS
BASEBAND DRIVE LEVEL
Rev. 0 | Page 20 of 28
Figure 56 shows the SSB output power and noise floor in
dBc/100 kHz versus baseband drive level at LO frequencies of
940 MHz, 1960 MHz, and 2140 MHz.
IMPROVING THIRD HARMONIC DISTORTION
While sideband suppression can be improved by adjusting the
relative baseband amplitudes and phase, the only means
available to reduce the third harmonic is to reduce the output
power. (See Figure 19, Figure 20, and Figure 21) It is worth
noting, however, that as the output power is reduced, the noise
floor, in dBc, stays fairly constant at the higher end of the power
curve (Figure 56). This indicates that the output power can be
reduced to a level that yields an acceptable third harmonic
without incurring a signal-to-noise ratio penalty. The constant
SNR versus output power relationship also indicates that
baseband voltage variations can be effectively used to control
system output power and/or regulate signal chain gain.
–14
–10
–6
–8
–12
–2
–4
4
2
6
0
–104
–90
–86
–88
–84
–102
–100
–98
–96
–94
–92
0.2
0.3
0.4
0.5
0.8
0.6
0.9
1.0
1.2
1.1
0.7
0
DIFFERENTIAL BASEBAND DRIVE (V p-p)
S
2
940 SSB
1960 SSB
2140 SSB
1960 20 MHz NOISE
940 20 MHz NOISE
2140 20 MHz NOISE
Figure 56. SSB P
OUT
and 20 MHz Noise Floor vs. Baseband Drive Level
(F
LO
= 940 MHz, 1960 MHz, and 2140 MHz)
相關PDF資料 |
PDF描述 |
|---|---|
| AD8349ARE | 700 MHz to 2700 MHz Quadrature Modulator |
| AD8349ARE-REEL7 | 700 MHz to 2700 MHz Quadrature Modulator |
| AD8350 | Low Distortion 1.0 GHz Differential Amplifier |
| AD8350AR15 | Low Distortion 1.0 GHz Differential Amplifier |
| AD8350AR15-EVAL | Low Distortion 1.0 GHz Differential Amplifier |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8349ARE | 制造商:Analog Devices 功能描述:Quadrature Mod 160MHz 16-Pin TSSOP EP Tube 制造商:Rochester Electronics LLC 功能描述:DIRECT QUADRATURE MODULATOR - Bulk 制造商:Analog Devices 功能描述:IC MODULATOR QUADRATURE |
| AD8349ARE-REEL7 | 功能描述:IC QUADRATURE MOD 700MHZ 16TSSOP RoHS:否 類別:RF/IF 和 RFID >> RF 調制器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:調制器 LO 頻率:700MHz ~ 2.3GHz RF 頻率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 輸出功率:-1dBm 電流 - 電源:46mA 電源電壓:2.7 V ~ 3.6 V 測試頻率:1.75GHz 封裝/外殼:28-WFQFN 裸露焊盤 包裝:帶卷 (TR) |
| AD8349AREZ | 功能描述:IC QUADRATURE MOD 700MHZ 16TSSOP RoHS:是 類別:RF/IF 和 RFID >> RF 調制器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:調制器 LO 頻率:700MHz ~ 2.3GHz RF 頻率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 輸出功率:-1dBm 電流 - 電源:46mA 電源電壓:2.7 V ~ 3.6 V 測試頻率:1.75GHz 封裝/外殼:28-WFQFN 裸露焊盤 包裝:帶卷 (TR) |
| AD8349AREZ-RL7 | 功能描述:IC MOD QUAD 2.7GHZ 16TSSOP RoHS:是 類別:RF/IF 和 RFID >> RF 調制器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 功能:調制器 LO 頻率:700MHz ~ 2.3GHz RF 頻率:700MHz ~ 2.3GHz P1dB:1dBm 底噪:-148dBm/Hz 輸出功率:-1dBm 電流 - 電源:46mA 電源電壓:2.7 V ~ 3.6 V 測試頻率:1.75GHz 封裝/外殼:28-WFQFN 裸露焊盤 包裝:帶卷 (TR) |
| AD8349EVAL | 制造商:Analog Devices 功能描述:IC ((NS)) |
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