- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄370699 > HSMS-285A Surface Mount Microwave Schottky Detector Diodes in SOT-323(表貼型微波肖特基檢測(cè)二極管（SOT-323封裝）) PDF資料下載
參數(shù)資料
| 型號(hào)： | HSMS-285A |
| 英文描述： | Surface Mount Microwave Schottky Detector Diodes in SOT-323(表貼型微波肖特基檢測(cè)二極管（SOT-323封裝）) |
| 中文描述： | 表面安裝微波肖特基二極管探測(cè)器采用SOT - 323（表貼型微波肖特基檢測(cè)二極管（采用SOT - 323封裝）） |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大?。?/td> | 117K |
| 代理商： | HSMS-285A |
8
5.8 GHz Detector Circuit
A possible design for a 5.8 GHz
detector is given in Figure 25.
As was the case at 2.45 GHz, the
circuit is entirely distributed
element, both low cost and
compact. Input impedance for this
network is given in Figure 26.
Input return loss, shown in
Figure 27, exhibits wideband
match.
FREQUENCY (GHz): 2.3-2.6
2.45 GHz
Figure 23. Input Impedance.
Modified 2.45 GHz Circuit.
R
2.3
-20
FREQUENCY (GHz)
2.45
0
-10
-15
2.6
-5
Figure 24. Input Return Loss.
Modified 2.45 GHz Circuit.
20 pF
HSMS-285A SERIES
VIDEO
OUT
RF
INPUT
WIDTH = 0.016"
LENGTH = 0.037"
WIDTH = 0.045"
LENGTH = 0.073"
TRANSMISSION LINE
DIMENSIONS ARE FOR
MICROSTRIP ON
0.032" THICK FR-4.
Figure 25. 5.8 GHz Matching
Network for the HSMS-285A
Series at Zero Bias or the
HSMS-286A Series at 3
μ
A Bias.
FREQUENCY (GHz): 5.6-6.0
Figure 26. Input Impedance.
R
5.6
-20
FREQUENCY (GHz)
5.8
0
-10
-15
6.0
-5
5.9
5.7
Figure 27. Input Return Loss.
Voltage Doublers
To this point, we have restricted
our discussion to single diode
detectors. A glance at Figure 12,
however, will lead to the
suggestion that the two types of
single diode detectors be
combined into a two diode voltage
doubler
[6]
(known also as a full
wave rectifier). Such a detector is
shown in Figure 28.
VIDEO OUT
Z-MATCH
NETWORK
RF IN
Figure 28. Voltage Doubler
Circuit.
Such a circuit offers several
advantages. First the voltage
outputs of two diodes are added in
series, increasing the overall value
of voltage sensitivity for the
network (compared to a single
diode detector). Second, the RF
impedances of the two diodes are
added in parallel, making the job
of reactive matching a bit easier.
Such a circuit can easily be
realized using the two series
diodes in the HSMS-285C or the
HSMS-286C.
The “Virtual Battery”
The voltage doubler can be used
as a virtual battery, to provide
power for the operation of an I.C.
or a transistor oscillator in a tag.
Illuminated by the CW signal from
a reader or interrogator, the
Schottky circuit will produce
power sufficient to operate an I.C.
or to charge up a capacitor for a
burst transmission from an
oscillator. Where such virtual
batteries are employed, the bulk,
cost, and limited lifetime of a
battery are eliminated.
[6]
Hewlett-Packard Application Note 956-4,
Schottky Diode Voltage Doubler.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HSMS-286A | Surface Mount Microwave Schottky Detector Diodes in SOT-323(表貼型微波肖特基檢測(cè)二極管（SOT-323封裝）) |
| HSMS-286K | Surface Mount RF Schottky Detector Diodes in SOT-363(表貼型射頻肖特基檢測(cè)二極管（SOT-363封裝）) |
| HSMS-286L | Surface Mount RF Schottky Detector Diodes in SOT-363(表貼型射頻肖特基檢測(cè)二極管（SOT-363封裝）) |
| HSMS-286P | Surface Mount RF Schottky Detector Diodes in SOT-363(表貼型射頻肖特基檢測(cè)二極管（SOT-363封裝）) |
| HSMS-286R | Surface Mount RF Schottky Detector Diodes in SOT-363(表貼型射頻肖特基檢測(cè)二極管（SOT-363封裝）) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HSMS-285ASERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Surface Mount Microwave Schottky Detector Diodes in SOT-323 (SC-70) (155K in pdf) |
| HSMS-285B | 制造商:HP 制造商全稱:Agilent(Hewlett-Packard) 功能描述:Surface Mount Zero Bias Schottky Detector Diodes |
| HSMS-285B-BLK | 制造商:HP 制造商全稱:Agilent(Hewlett-Packard) 功能描述:Surface Mount Zero Bias Schottky Detector Diodes |
| HSMS-285B-BLKG | 功能描述:射頻檢測(cè)器 RF/ID below 1.5GHz RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 頻率范圍:650 MHz to 3 GHz 最大二極管電容: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SC-88 封裝:Reel |
| HSMS-285B-G | 制造商:Avago Technologies 功能描述:HSMS-285B zero-bias Schottky detector |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。