19.0-26.0 GHz GaAs Transmitter
QFN, 7x7mm
August 2006 - Rev 31-Aug-06
U1003-QD
Chip Device Layout
Features
Sub-harmonic Transmitter
Integrated IR Mixer, LO Buffer & Output Amplifier
2.0 dBm LO Drive Level
15.0 dB Image Rejection, 10.0 dB Conversion Gain
7x7 mm, QFN
General Description
Mimix Broadband’s 19.0-26.0 GHz GaAs MMIC transmitter has a
+20.0 dBm output third order intercept and 15.0 dB image
rejection across the band. This device is an image reject
sub-harmonic anti-parallel diode mixer followed by a balanced
two stage output amplifier and includes an integrated LO buffer
amplifier. The image reject mixer reduces the need for
unwanted sideband filtering before the power amplifier. The
use of a sub-harmonic mixer makes the provision of the LO
easier than for fundamental mixers at these frequencies. I and Q
mixer inputs are provided and an external 90 degree hybrid is
required to select the desired sideband. This MMIC uses Mimix
Broadband’s 0.15
µm
GaAs PHEMT device model technology,
and is based upon electron beam lithography to ensure high
repeatability and uniformity. The device comes in a 7x7mm QFN
surface mount laminate package that is RoHS compliant. This
device is well suited for Millimeter-wave Point-to-Point Radio,
LMDS, SATCOM and VSAT applications.
Absolute Maximum Ratings
Supply Voltage (Vd)
Supply Current (Id1,Id2)
Gate Bias Voltage (Vg)
Input Power (IF Pin)
Storage Temperature (Tstg)
Operating Temperature (Ta)
Channel Temperature (Tch)
+5.0 VDC
320, 165 mA
+0.5 VDC
0.0 dBm
-65 to +165
O
C
-55 to MTTF Table
1
MTTF Table
1
(1) Channel temperature affects a device's MTTF. It is
recommended to keep channel temperature as low as
possible for maximum life.
Electrical Characteristics (Ambient Temperature T = 25
o
C)
Parameter
Frequency Range (RF) Upper Side Band
Frequency Range (RF) Lower Side Band
Frequency Range (LO)
Frequency Range (IF)
Output Return Loss RF (S22)
Small Signal Conversion Gain IF/RF (S21)
LO Input Drive (P
LO
)
Image Rejection
2xLO Leakage @ RF
Output Third Order Intercept (OIP3)
Drain Bias Voltage (Vd1)
Drain Bias Voltage (Vd2)
Gate Bias Voltage (Vg1,2)
Supply Current (Id1) (Vd1=4.0V, Vg=-0.1V Typical)
Supply Current (Id2) (Vd2=4.0V, Vg=-0.1V Typical)
Units
GHz
GHz
GHz
GHz
dB
dB
dBm
dBc
dBm
dBm
VDC
VDC
VDC
mA
mA
Min.
19.0
19.0
8.0
DC
-
-
-
-
-
-
-
-
-1.2
-
-
Typ.
-
-
-
-
14.0
10.0
+2.0
20.0
-12.0
+23.0
+4.0
+4.0
-0.1
230
116
Max.
26.0
26.0
14.5
3.0
-
-
-
-
-
-
+4.5
+4.5
+0.3
280
140
Page 1 of 6
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Characteristic Data and Specifications are subject to change without notice.
©2006
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
19.0-26.0 GHz GaAs Transmitter
QFN, 7x7mm
August 2006 - Rev 31-Aug-06
U1003-QD
Transmitter Measurements
XU1003-QD, Conversion Gain (dB)
20
18
Conversion Gain (dB)
16
14
12
10
8
6
4
2
0
17
19
21
23
25
27
RF Freq (GHz)
LSB
USB
XU1003-QD, Image Rejection (dBc)
0
-5
Image Rejection (dBc)
-10
-15
-20
-25
-30
-35
17
19
21
23
25
27
RF Freq (GHz)
LSB
USB
XU1003-QD, 1xLO Leakage (dBm) @ RF port
20
10
1xLO Leakage (dBm)
0
-10
-20
-30
-40
-50
7.5
8.5
9.5
10.5
11.5
12.5
13.5
14.5
1xLO Freq (GHz)
2xLO Leakage (dBm)
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
15
XU1003-QD, 2xLO Leakage (dBm) @ RF port
17
19
21
23
25
27
29
2xLO Freq (GHz)
XU1003-QD, Output Intercept Point (OIP3)
40
35
Output IP3 (dBm)
30
25
20
15
10
17
19
21
23
RF (GHz)
[IF=2GHz]
25
27
USB
LSB
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 2 of 6
Characteristic Data and Specifications are subject to change without notice.
©2006
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
19.0-26.0 GHz GaAs Transmitter
QFN, 7x7mm
August 2006 - Rev 31-Aug-06
U1003-QD
Physical Dimensions
Application Circuit
XU1003-QD
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 3 of 6
Characteristic Data and Specifications are subject to change without notice.
©2006
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
19.0-26.0 GHz GaAs Transmitter
QFN, 7x7mm
August 2006 - Rev 31-Aug-06
U1003-QD
App Note [1] Biasing
- This device is operated by separately biasing Vd1 and Vd2 with Vd1=4.0V, Id1=230mA and
Vd2=4.0V, Id2=116mA. It is recommended to use active biasing to keep the currents constant as the RF power and
temperature vary; this gives the most reproducible results. Depending on the supply voltage available and the power
dissipation constraints, the bias circuit may be a single transistor or a low power operational amplifier, with a low value
resistor in series with the drain supply used to sense the current. The gate of the pHEMT is controlled to maintain correct
drain current and thus drain voltage. The typical gate voltage needed to do this is -0.1V. Typically the gate is protected
with Silicon diodes to limit the applied voltage. Also, make sure to sequence the applied voltage to ensure negative
gate bias is available before applying the positive drain supply.
MTTF Tables (TBD)
These numbers were calculated based on accelerated life test information and thermal model analysis received from the fabricating foundry.
Backplate
Temperature
55 deg Celsius
75 deg Celsius
95 deg Celsius
Channel
Temperature
deg Celsius
deg Celsius
deg Celsius
Rth
MTTF Hours
FITs
C/W
C/W
C/W
E+
E+
E+
E+
E+
E+
Bias Conditions:
Vd1=4.0V, Vd2=4.0V, Id1=230 mA, Id2=116 mA
Typical Application
XU1003-QD
Sideband
Reject
XB1004
XP1013
IF IN
2 GHz
RF Out
21.2-23.6 GHz
LO(+2.0dBm)
9.6-10.8 GHz (USB Operation)
11.6-12.8 GHz (LSB Operation)
Mimix Broadband MMIC-based 19.0-26.0 GHz Transmitter Block Diagram
(Changing LO and IF frequencies as required allows design to operate as high as 26 GHz)
Mimix Broadband's 19.0-26.0 GHz XU1003-QD GaAs MMIC Transmitter can be used in saturated radio applications and
linear modulation schemes up to 16 QAM. The transmitter can be used in upper and lower sideband applications from
19.0-26.0 GHz.
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 4 of 6
Characteristic Data and Specifications are subject to change without notice.
©2006
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
19.0-26.0 GHz GaAs Transmitter
QFN, 7x7mm
August 2006 - Rev 31-Aug-06
U1003-QD
App Note [3] USB/LSB Selection
-
LSB
USB
For Upper Side Band operation (USB):
With IF1 and IF2 connected to the
direct port (0º) and coupled port (90º)
respectively as shown in the diagram,
the USB signal will reside on the
isolated port. The input port must be
loaded with 50 ohms.
IF2
IF1
For Lower Side Band operation (LSB):
With IF1 and IF2 connected to the
direct port (0º) and coupled port (90º)
respectively as shown in the diagram,
the LSB signal will reside on the input
port. The isolated port must be loaded
with 50 ohms.
An alternate method of Selection of USB or LSB:
USB
LSB
In Phase Combiner
In Phase Combiner
-90
o
-90
o
IF2
IF1
IF2
IF1
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 5 of 6
Characteristic Data and Specifications are subject to change without notice.
©2006
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
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