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参数资料
| 型号： | HMMC-3040 |
| 厂商： | AGILENT TECHNOLOGIES INC |
| 元件分类： | 混频器 |
| 英文描述： | 20000 MHz - 43000 MHz RF/MICROWAVE DOUBLE BALANCED MIXER, 12 dB CONVERSION LOSS-MAX |
| 封装： | DIE |
| 文件页数： | 3/7页 |
| 文件大小： | 124K |
| 代理商： | HMMC-3040 |
3
Applications
The HMMC-3040 MMIC is a
broadband double-balanced
mixer (DBM) with an integrated
LO amplifier. It can be used as
either a frequency up-converter
or down-converter. This mixer
was designed specifically for
microwave/millimeter-wave
point-to-point and point-to-
multipoint (including LMDS/
LMCS/MVDS) communication
systems that operated in the
20–43 GHz frequency range.
The LO amplifier can also be
biased to provide frequency
multiplication of the LO source
(Figure 2). The integrated LO
amplifier will provide a good
impedance match to low
frequency input signals. Frequen-
cies below approximately 18 GHz
will not be passed by the LO
network, enhancing LO rejection.
Biasing and Operation
The recommended DC bias
condition is with all drains
connected to a single 3.5–4.5 volt
supply and all gates connected to
an adjustable negative voltage
supply. The gate voltage is
adjusted for a total drain supply
current of typically 150– 230 mA.
An assembly diagram is shown in
Figure 4.
The LO amplifier has effectively
two gain stages as indicated in
Figure 1. One wire connection is
needed to each DC drain bias
supply pad, V
D1 and VD2, and one
to each DC gate bias pad, V
G1 and
V
G2.
Harmonic LO mixing is possible
in some limited cases. The inte-
grated LO amplifier’s stages can
be individually biased to provide
optimum harmonic output. When
considering the HMMC-3040 as a
harmonic mixer, it is important
to realize that the integrated dou-
ble balanced mixer diodes need
~18 dBm (15 to 22 dBm) to
obtain optimum mixer conver-
sion. Agilent product note #15,
“HMMC-3040 Multiplier
Operation” provides two
examples of harmonic mixing.
Also, Agilent application note
#50, “HMMC-5040 As a 20 to
40 GHz Multiplier” provides
additional information on
multiplier operation and is a
good reference when considering
the HMMC-3040 as a harmonic
mixer; the HMMC-3040 inte-
grated LO amplifier is similar to
the HMMC-5040. No impedance
matching network is needed
because the LO port provides a
good match to signals having
frequency from DC to approxi-
mately 43 GHz.
IF
DBM
LO
RF
VD2
VG2
VD1
VG1
2
1
Figure 1. HMMC-3040 Simplified Block
Diagram.
The microwave/millimeter-wave
ports are not AC-coupled. A DC
blocking capacitor is required on
any RF port that may be exposed
to DC voltages.
No ground wires are needed be-
cause ground connections are
made with plated through-holes
to the backside of the device.
Assembly Techniques
It is recommended that the elec-
trical connections to the bonding
pads be made using 0.7-1.0 mil
diameter gold wire. The micro-
wave/millimeter-wave connec-
tions should be kept as short as
possible to minimize inductance.
For assemblies requiring long
bond wires, multiple wires can
be attached to the RF bonding
pads.
GaAs MMICs are ESD sensitive.
ESD preventive measures must
be employed in all aspects of
storage, handling, and assembly.
MMIC ESD precautions, handling
considerations, die attach and
bonding methods are critical fac-
tors in successful GaAs MMIC
performance and reliability.
Agilent application note #54,
“GaAs MMIC ESD, Die Attach
and Bonding Guidelines” pro-
vides basic information on these
subjects.
Additional References
PN #15, “HMMC-5040 Multiplier
Operation,” and AN # 50,
“HMMC-5040 As a 20-40 GHz
Multiplier.”
IF
DBM
LO
RF
VD2
VG2
VD1
VG1
Figure 2. HMMC-3040 Harmonic Mixing Block
Diagram.
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