WJ Communications MH1, MH1-PCB Datasheet
WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX:408-433-5649 • e-mail:sales@wj.com • Web site: www.wj.com
September 2000
MH1
Product Description
The MH1 is a passive FET mixer that provides
high dynamic range performance in a low cost
SOIC-8 package. WJ’s FET based MH1 uses
patented techniques to realize +30 dBm IIP3 at
an LO drive level of +17 dBm. The product is
fully self contained and does not require any
external bias, matching or decoupling elements.
Typical applications include frequency up/down
conversion, modulation and demodulation for
receivers and transmitters used in PCS,
DCS1800 and PHS systems.
Product Features
•
+30 dBm IIP3
• No External Matching Elements
Required
• RF 1700-2000 MHz
• LO 1450-1950 MHz
•
IF 50-250 MHz IF
• +17 dBm Drive Level
• Low Cost SOIC-8 Package
•
No External Bias Required
Absolute Maximum Ratings
1
Parameter Rating
Operating Case Temperature -40 to +85°C
Storage Temperature -65 to +100°C
Maximum Input LO Power
2
+21 dBm
1. Operation of this device above any of these parameters may cause permanent damage.
2.Total sum of LO port and RF port power should not to exceed +23 dBm.
Ordering Information
Part No. Description
MH1 High Dynamic Range MMIC Mixer
(Available in tape and reel)
MH1-PCB Fully Assembled Application Circuit
High Dynamic Range MMIC Mixer
Specifications
Parameter Units Minimum Typical Maximum Condition
Frequency Range:
RF MHz 1700 2000
LO MHz 1450 1950
IF MHz 50 250
SSB Conversion Loss dB 8.8
Noise Figure dB 9.1
Isolation:
L-R dB 26
L-I dB 38
R-I dB 18
IIP3 dBm 30 RF = 1850 MHz (0 dBm)
Return Loss:
RF Port dB 15
LO Port d B 1 3
IF Port dB 13
Input P1dB dBm 18
LO Drive Level dBm 17
Test conditions unless otherwise noted, RF = 1850 MHz (-10 dBm), LO = 1750 MHz (17 dBm), IF = 100 MHz and 25°C.
Data was taken using the application board detailed in Figure 1, a 50 Ω system, low side LO and downconverter applicaion.
Functional Diagram
Function Pin No.
RF 7
LO 2
IF 5
Ground 1,3,4,6,8
5678
4321
The Communications Edge
™
Advanced Product Information
WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX:408-433-5649 • e-mail: sales@wj.com • Web site: www.wj.com
September 2000
MH1
Performance Charts
40
35
30
25
20
Input Intercept Point (dBm)
RF Frequency (MHz)
1700 1750 1800 1850 1900 1950 2000
IF = 50 MHz
IIP3 vs. RF Frequency
RF Frequency (MHz)
1700 1750 1800 1850 1900 1950 2000
5.0
7.5
10.0
12.5
15.0
Conversion Loss (dB)
Conversion Loss vs. RF Frequency
RF Frequency (MHz)
1700 1750 1800 1850 1900 1950 2000
0
5
10
15
20
RF Return Loss (dB)
RF Return Loss vs. RF Frequency
R-I
30
20
10
0
Isolation (dB)
RF Frequency (MHz)
1700 1750 1800 1850 1900 1950 2000
Isolation vs. RF Frequency
IF Frequency (MHz)
50 100 150 200 250
0
5
10
15
20
IF Return Loss (dB)
IF Return Loss vs. IF Frequency
L-R
L-I
Isolation (dB)
50
40
30
20
10
0
LO Frequency (MHz)
1450 1550 1650 1750 1850 1950
Isolation vs. LO Frequency
LO Return Loss (dB)
0
5
10
15
20
LO Frequency (MHz)
1450 1550 1650 1750 1850 1950
LO Return Loss vs. LO Frequency
IF = 250 MHz
IF = 100 MHz
IF = 100 MHz
IF =250 MHz
IF = 50 MHz
Advanced Product Information
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