Port Diagram
A top-down view of the MPD4-0218CSP3 package outline drawing is shown below. The MMIC Power dividers are passive reciprocal devices allowing either power splitting or power combining.
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Device Overview
General Description
The MPD4-0218CSP3 is a small footprint MMIC 2-18 GHz 4-Way power divider/power splitter featuring high 29 dB isolation and low 0.8 dB excess insertion loss in our compact CSP3 chip scale package. It is much smaller than a printed PCB Wilkinson Power Divider/Combiner. It can be used as an equal amplitude/phase power splitter or a power combiner with excellent isolation. Tight fabrication tolerances result in less unit-to-unit variation than traditional power divider technologies, allowing for accurate simulations using the provided S5P file taken from measured production units. The 3.5 mm CSP3 package enables extreme miniaturization of SMT footprint making the MPD4-0218CSP3 ideal for applications prioritizing low SWaP.
Features
- 4-way splitter or combiner in a compact 3.5mm package
- Low 0.8 dB typical insertion loss
- High 29 dB isolation
- Excellent 0.15 dB amplitude and 2.2° phase balance
- This product embodies Marki Microwave's U.S. Pat. 11,869,858.
Applications
- Test Equipment
- Electronic Warfare
- Radar and satellite communications
- High Channel Count Systems
Functional Block Diagram
Part Ordering Options
| Part Number | Description | Package | Green Status | Product Lifecycle | Export Classification |
|---|---|---|---|---|---|
| MPD4-0218CSP3 | 2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter | CSP3 | REACH RoHS | Released | EAR99 |
| EVB-MPD4-0218 | Evaluation Board, 2 - 18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter | EVB | RoHS REACH | Released | EAR99 |
| Part Number | Description | Package | Green Status | Product Lifecycle | Export Classification |
|---|---|---|---|---|---|
| MPD4-0218CSP3 | 2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter | CSP3 | REACH RoHS | Released | EAR99 |
| EVB-MPD4-0218 | Evaluation Board, 2 - 18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter | EVB | RoHS REACH | Released | EAR99 |
MPD4-0218CSP3
2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter
Table Of Contents
- Device Overview
- Port Configuration and Functions
- Revision History
- Specifications
- Mechanical Data
- Footprint Image
- Evaluation Board
Revision History
| Revision Code | Revision Date | Comment |
|---|---|---|
| - | 2025-07-09 | Initial Release |
| A | 2025-08-27 | Port Functions Description Updated |
| B | 2025-11-17 | Power Handling Updated |
MPD4-0218CSP3
2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter
Port Configuration and Functions
MPD4-0218CSP3
2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter
Port Functions
| Port | Function | Description | DC Equivalent Circuit |
|---|---|---|---|
| Ground Paddle | Gnd | Ground paddle should be connected to RF ground |  |
| Pin 1 | Common | Pin 1 is the common input/output pin. It is DC open to the other 4 pins and open to ground. |  |
| Pin 2 | Input/Output 1 | Pin 2 is an input/output pin. It is DC short to the other 4 pins and open to ground. | |
| Pin 3 | Input/Output 2 | Pin 3 is an input/output pin. It is DC short to the other 4 pins and open to ground. | |
| Pin 4 | NC | Pin 4 is not internally connected. It can be connected to ground for normal operation. |  |
| Pin 5 | Input/Output 3 | Pin 5 is an input/output pin. It is DC short to the other 4 pins and open to ground. | |
| Pin 6 | Input/Output 4 | Pin 6 is an input/output pin. It is DC short to the other 4 pins and open to ground. | |
MPD4-0218CSP3
2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter
Specifications
Absolute Maximum Ratings
The Absolute Maximum Ratings indicate limits beyond which damage may occur to the device. If these limits are exceeded, the device may be inoperable or have a reduced lifetime.
| Parameter | Maximum Rating | Unit |
|---|---|---|
| DC Current | 40 | mA |
| Maximum Operating Temperature | 100 | °C |
| Maximum Storage Temperature | 125 | °C |
| Minimum Operating Temperature | -55 | °C |
| Minimum Storage Temperature | -65 | °C |
| RF Power Handling as a Power Combiner 1 | 1 | W |
| RF Power Handling as a Power Divider 2 | 10 | W |
[1] Power handling as a combiner is specified per port with all other ports terminated. Under worst-case odd-mode conditions, adjacent port pairs (Pins 2–3 and Pins 5–6) must not experience differential signals exceeding 1 W.
[2] Measured with a 6 GHz CW
Package Information
| Parameter | Details | Rating |
|---|---|---|
| ESD | 250 to < 500 Volts | HBM Class 1A |
| Dimensions | - | 3.50 x 3.50 mm |
| Moisture Sensitivity Level | - | MSL 1 |
MPD4-0218CSP3
2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter
Electrical Specifications
The electrical specifications apply at TA=+25°C in a 50Ω system. Min and Max limits are guaranteed at TA=+25°C.
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| Amplitude Balance | Adjacent Ports | 2 | 18 | - | 0.16 | - | dB |
| Amplitude Balance | Non-Adjacent Ports | 2 | 18 | - | 0.15 | - | dB |
| Common Port Return Loss | - | 2 | 18 | - | 22 | - | dB |
| Excess Insertion Loss 1 | - | 2 | 18 | - | 0.8 | - | dB |
| Impedance | - | 2 | 18 | - | 50 | - | Ω |
| Isolation | Adjacent Ports | 2 | 18 | - | 22 | - | dB |
| Isolation | Non-Adjacent Ports | 2 | 18 | - | 29 | - | dB |
| Nominal Phase Shift | - | 2 | 18 | - | 0 | - | ° |
| Nominal Power Splitting | - | 2 | 18 | - | 6 | - | dB |
| Output Return Loss | - | 2 | 18 | - | 21 | - | dB |
| Phase Balance | Adjacent Ports | 2 | 18 | - | 2.2 | - | ° |
| Phase Balance | Non-Adjacent Ports | 2 | 18 | - | 2.8 | - | ° |
| Parameter | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|
| Amplitude Balance | Adjacent Ports | 2 | 18 | - | 0.16 | - | dB |
| Amplitude Balance | Non-Adjacent Ports | 2 | 18 | - | 0.15 | - | dB |
| Common Port Return Loss | - | 2 | 18 | - | 22 | - | dB |
| Excess Insertion Loss 1 | - | 2 | 18 | - | 0.8 | - | dB |
| Impedance | - | 2 | 18 | - | 50 | - | Ω |
| Isolation | Adjacent Ports | 2 | 18 | - | 22 | - | dB |
| Isolation | Non-Adjacent Ports | 2 | 18 | - | 29 | - | dB |
| Nominal Phase Shift | - | 2 | 18 | - | 0 | - | ° |
| Nominal Power Splitting | - | 2 | 18 | - | 6 | - | dB |
| Output Return Loss | - | 2 | 18 | - | 21 | - | dB |
| Phase Balance | Adjacent Ports | 2 | 18 | - | 2.2 | - | ° |
| Phase Balance | Non-Adjacent Ports | 2 | 18 | - | 2.8 | - | ° |
[1] Excess Insertion Loss is loss in addition to power splitting loss, calculated as (Common Port to Output Port Insertion Loss) – (Power splitting loss of 6 dB)
MPD4-0218CSP3
2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter
Typical Performance Plots
MPD4-0218CSP3
2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter
Measured data is de-embedded from fixture using automatic fixture removal (AFR).
MPD4-0218CSP3
2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter
Mechanical Data
MPD4-0218CSP3
2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter
Footprint Image
Download : Footprint Drawing
MPD4-0218CSP3
2-18 GHz MMIC 4-Way Wilkinson Power Divider/Power Splitter
Evaluation Board - Outline Drawing
