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MQH-40110M2
MMIC 40-110GHz Quadrature Hybrid
The MQH-40110M2 is a 40–110 GHz quadrature (90°) hybrid in our miniature M2-package enabling operation up to 110 GHz. The quad hybrid features exceptional amplitude and phase balance and high isolation between the quadrature ports. Passive GaAs MMIC technology allows production of smaller constructions that replace larger form factor circuit board constructions. Tight fabrication tolerances allow for less unit-to-unit variation than traditional quadrature hybrid technologies. Low variation allows for accurate simulations using the provided S4P file taken from measured production units. The MQH-40110M2 is available as a 1.0mm connectorized module.
| Parameter | Typ | Unit |
|---|---|---|
| Frequency Range | 40 to 110 | GHz |
| Isolation | 18 | dB |
| Nominal Phase Shift | 90 | ° |
| Phase Balance | 5 | ° |
| Amplitude Balance | 1 | dB |
Summary only – refer to the Electrical Specifications, Absolute Maximum Ratings, and Recommended Operating Range tables for complete details.
| Part Number | Description | Package | Connectors | Green Status | Product Lifecycle | Export Classification |
|---|---|---|---|---|---|---|
| MQH-40110M2 | MMIC 40-110GHz Quadrature Hybrid | M2 | Standard | REACH RoHS | Released | EAR99 |
The electrical specifications apply at TA=+25°C in a 50Ω system. Min and Max limits are guaranteed at TA=+25°C.
| Parameter | Port Configuration | Test Conditions | Minimum Frequency (GHz) | Maximum Frequency (GHz) | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|---|---|
| Frequency Range | - | - | 40 | 110 | - | - | - | GHz |
| Amplitude Balance | - | - | 40 | 110 | - | 1 | 3 | dB |
| Excess Insertion Loss | - | - | 40 | 110 | - | 2.5 | 5 | dB |
| Impedance | - | - | 40 | 110 | - | 50 | - | Ω |
| Isolation | - | - | 40 | 110 | - | 18 | - | dB |
| Mean Coupling | - | - | 40 | 110 | - | 3 | - | dB |
| Nominal Phase Shift | - | - | 40 | 110 | - | 90 | - | ° |
| Phase Balance | - | - | 40 | 110 | - | 5 | 15 | ° |
| Return Loss | - | - | 40 | 110 | - | 13 | - | dB |
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, at any Port | 48 | mA |
| Maximum Operating Temperature | 100 | °C |
| Maximum Storage Temperature | 125 | °C |
| Minimum Operating Temperature | -55 | °C |
| Minimum Storage Temperature | -65 | °C |
| Power Handling, at any Port | 1 | W |
| Parameter | Details | Rating |
|---|---|---|
| ESD | 250 to < 500 Volts | HBM Class 1A |
| Dimensions | - | 27.62 x 27.63 mm |
A top-down view of the MQH-40110M2 package outline drawing is shown below. This MMIC quadrature hybrid is a passive reciprocal device allowing any port to be used as the input. Ports 1 – 4 correspond to the M2 package designation.
| Port | Function | Connector Type | Description | DC Equivalent Circuit |
|---|---|---|---|---|
| GND | Ground | - | M2 package ground path is provided through the metal housing. |  |
| Port 1 | Input/Output | 1.0F | Port 1 is DC short to port 2 and open to ground. |  |
| Port 2 | 0° Output/Input | 1.0F | Port 2 is DC short to port 1 and open to ground. | |
| Port 3 | 90° Output/Input | 1.0F | Port 3 is DC short to port 4 and open to ground. | |
| Port 4 | Isolated | 1.0F | Port 4 is DC short to port 3 and open to ground. | |
| Port | Function | Connector Type | Description | DC Equivalent Circuit |
|---|---|---|---|---|
| GND | Ground | - | M2 package ground path is provided through the metal housing. | |
| Port 1 | 0° Output/Input | 1.0F | Port 1 is DC short to port 2 and open to ground. | |
| Port 2 | Input/Output | 1.0F | Port 2 is DC short to port 1 and open to ground. | |
| Port 3 | Isolated | 1.0F | Port 3 is DC short to port 4 and open to ground. | |
| Port 4 | 90° Output/Input | 1.0F | Port 4 is DC short to port 3 and open to ground. | |
| Port | Function | Connector Type | Description | DC Equivalent Circuit |
|---|---|---|---|---|
| GND | Ground | - | M2 package ground path is provided through the metal housing. | |
| Port 1 | 90° Output/Input | 1.0F | Port 1 is DC short to port 2 and open to ground. | |
| Port 2 | Isolated | 1.0F | Port 2 is DC short to port 1 and open to ground. | |
| Port 3 | Input/Output | 1.0F | Port 3 is DC short to port 4 and open to ground. | |
| Port 4 | 0° Output/Input | 1.0F | Port 4 is DC short to port 3 and open to ground. | |
| Port | Function | Connector Type | Description | DC Equivalent Circuit |
|---|---|---|---|---|
| GND | Ground | - | M2 package ground path is provided through the metal housing. | |
| Port 1 | Isolated | 1.0F | Port 1 is DC short to port 2 and open to ground. | |
| Port 2 | 90° Output/Input | 1.0F | Port 2 is DC short to port 1 and open to ground. | |
| Port 3 | 0° Output/Input | 1.0F | Port 3 is DC short to port 4 and open to ground. | |
| Port 4 | Input/Output | 1.0F | Port 4 is DC short to port 3 and open to ground. | |
Quadrature signal generation is useful for many applications in analog signal processing. Marki MQH/S MMIC quadrature hybrids and 90˚ Splitter/Combiners offer this functionality in a small factor with high repeatability. Below are applications and how they can be realized with the MQH and MQS product lines.
Quadrature Hybrids vs 90˚ Splitter/Combiners
Some products are ‘true’ quadrature hybrids, while others are 90˚ Splitter/Combiners. A quadrature hybrid is symmetric about all four ports, meaning that in a splitting application any port can be used as an input, with the isolated and output ports following from this selection. Likewise, for a combining application, any port can be used as an output.
A 90˚ Splitter/Combiner is not symmetric. When splitting, only ports 1 and 2 can be used as an input. If ports 3 or 4 were used, there would be significant phase walk-off between the output ports. As a combiner, only ports 1 and 2 are suitable as output ports. The phase walk-off introduced when using ports 3 or 4 as an output means that reflected signals recombine and cancel poorly inside a 90° Splitter/Combiner.
Single Sideband and Image Reject Mixers
The primary application for the MQH and MQS series is as IF or LO quadrature signal splitter/combiners. They can be used in combination with the MMIQ series of IQ mixers to create broadband single sideband and image reject mixers. Either 90˚ Splitter/Combiners or quadrature hybrids can be used as the IF hybrid, but if a 90˚ Splitter/Combiner is used only one sideband (or image) is accessible, whereas if a quadrature hybrid is used than both sidebands are accessible.
If a 90˚ Splitter/Combiner is used for a single sideband upconverter or image reject mixer, port 1 (or 2) should be used as the IF input/output and ports 2 and 3 (or 1 and 4) should be connected to the I and Q ports. Selecting port 1 or 2 to terminate will select which sideband of the mixer to reject.
Balanced Amplifiers
Similar to a balanced amplifier, a reflectionless filter will terminate reflections that are out of band for a filter (but in band for the quadrature hybrid) at the isolated port.
Since a 90˚ Splitter/Combiner is not completely symmetric, reflected signals will not terminate as well as with a quadrature hybrid. An MQH option is recommended for this application. Testing/simulation is recommended when considering if a 90° Splitter/Combiner is suitable.
Reflective Applications
Unlike in the previous applications, reflective applications only work well with a quadrature hybrid (not a 90˚ Splitter/Combiner). In these applications a signal is reflected off of two identical structures (typically a PIN diode) and the output signal is collected at the isolated port. In this case the desired signal is deliberately reflected.
Since a 90˚ Splitter/Combiner is not completely symmetric, you will have poor results if you use one for reflective applications.
Download : Outline 3D Drawing Outline 3D STP
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