MH203
High Linearity Cellular-Band MMIC Mixer
Product Information
Product Features
•
•
•
•
•
•
•
•
+32 dBm IIP3
RF
800 – 960 MHz
IF
200 – 350 MHz
ISO & EPC compliant
High-side LO configuration
+17 dBm Drive Level
Low Cost SOIC-8 Package
No External Bias Required
Product Description
The MH203 is a passive GaAs MESFET mixer that
provides high dynamic range performance in a low
cost SOIC-8 package.
Its robustness and ease of use
make it an ideal candidate for the core of any RFID reader
application. It is compliant with EPC and ISO standards.
Functional Diagram
1
8
7
2
3
6
Applications
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RFID: UHF
•
Readers
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Industrial
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Portable
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Handheld
WJ’s MH203 uses patented techniques to realize +32
dBm Input IP3 at an LO drive level of +17 dBm
when used in a simple application circuit as an
upconverting or downconverting high-side LO
configuration. This single monolithic integrated
circuit does not require any external baluns or bias
elements.
Typical applications include frequency up/down
conversion, modulation and demodulation for
receivers and transmitters used in
various current and
next generation RFID technologies such as EPC, ISO,
ETSI, and ANSI. Their small size makes them ideal for
PCMCIA applications.
4
5
Function
LO
IF & RF
*
GND
Pin No.
2
7
1, 3, 4, 5, 6, 8
* External components (inductors &
capacitors) are required to diplex the signal
Specifications
1
Parameters
RF Frequency Range
LO Frequency Range
IF Frequency Range
SSB Conversion Loss
Noise Figure
Input IP3
Input P1dB
LO – RF Isolation
LO – IF Isolation
RF – IF Isolation
Return Loss: RF Port
Return Loss: IF Port
Return Loss: LO Port
LO Drive Level
Units
MHz
MHz
MHz
dB
dB
dBm
dBm
dB
dB
dB
dB
dB
dB
dBm
Min
800
1000
200
Typ
Max
960
1310
350
9.5
Comments
+28
25
50
8.2
8.7
+32
+17.5
30
65
25
20
17
12
+17
See note 2
See note 3
See note 4
See note 4
Test conditions unless otherwise noted:
1. Performance is with the use of an application specific circuit (shown on page 4) with a high-side LO at +17 dBm in a downconverting application at 25° C.
2. Assumes LO injection noise is filtered at the thermal noise floor, -174 dBm/Hz, at the RF, IF, and Image frequencies.
3. IIP3 is measured with
∆f
= 1 MHz with RF
in
= 0 dBm / tone.
4. The return loss is measured after the diplexer which splits the RF and IF signals from the mixer. Details of the diplexing circuit is shown on page 4.
Absolute Maximum Rating
Parameter
Operating Case Temperature
Storage Temperature
Maximum Input LO Power
6
Ordering Information
Part No.
MH203
MH203-PCB
Rating
-40° to +85
°C
-65° to +100 °C
+21 dBm
Description
Cellular-band MMIC Mixer
Fully -Assembled Mixer Application Board
5. Operation of this device above any of these parameters may cause permanent damage.
6. Total sum of the LO and RF port power should not exceed +23 dBm
.
Specifications and information are subject to change without notice
WJ Communications, Inc
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Phone 1-800- WJ1-4401
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FAX: 408-577-6621
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e- mail: sales@wj.com
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Web site: www.wj.com
February 2004
WJCI [ WJ COMMUNICATION. INC. ]
