MMIQ-1040HSM-2

Marki Microwave

Passive GaAs MMIC IQ MixerMMIQ-1040HSM

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Technical content

1.1 General Description

MMIQ-1040HSM is a high linearity, passive GaAs MMIC IQ mixer. This is an ultra-broadband mixer spanning 10 to 40 GHz on the RF and LO ports with an IF from DC to 10 GHz. Up to 50 dB of image rejection is available due to the excellent phase and amplitude balance of its on-chip LO quadrature hybrid. Both surface mount QFNs and evaluation boards are available. For a list of recommended LO driver amps for all mixers and IQ mixers, see here.

1.2 Electrical Summary

RF/LO Frequency Range 10 - 40 GHz IF Frequency Range DC - 10 GHz I+Q Conversion Loss 9 dB Image Rejection 35 dB LO-RF Isolation 40 dB

1.3 Applications

▪ Single Side Band & Image Rejection Mixing ▪ IQ Modulation/Demodulation ▪ Vector Amplitude Modulation ▪ Band Shifting ▪ 5G Band Support

1.4 Functional Block Diagram

1.5 Part Ordering Options1

Number Description Package Green Status Product Lifecycle Export Classification MMIQ-1040HSM-2 4 mm x 4 mm QFN SM RoHS Active EAR99 EVAL-MMIQ-1040H Connectorized module, QFN reflowed onto PCB EVAL RoHS Active EAR99 1 Refer to our website for a list of definitions for terminology presented in this table.

Revision History

Revision Code Revision Date Comment - January 2021 Datasheet Initial Release

2.1 Port Diagram

A bottom-up view of the MMIQ-1040H’s SMT package outline drawing is shown below. The mixer may be operated as either a downconverter or an upconverter. Use of the RF or I/Q as the input or output port will depend on the application. See Application Information for input and output port configuration for common applications.

2.2 Port Functions

Port Function Description Equivalent Circuit Pad 13 RF Input/Output Pad 13 is DC short and AC matched to 50Ω over the specified RF frequency range. Pad 19 LO Input Pad 19 is DC open and AC matched to 50Ω over the specified LO frequency range. Pad 7 I Input / Output Pad 7 is diode coupled and AC matched to 50Ω over the specified I port frequency range. Pad 9 Q Input / Output Pad 9 is diode coupled and AC matched to 50Ω over the specified Q port frequency range. GND Ground SM package ground path is provided through the large center ground paddle

3.1 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 Units Pin 7 DC Current 30 mA Pin 9 DC Current 30 mA Power Handling, at any Port +27 dBm Operating Temperature -55 to +100 °C Storage Temperature -65 to +125 ºC

3.2 Package Information

ESD Human Body Model (HBM), per MIL-STD-750, Method 1020 Class 1A Weight EVAL Package TBD

3.3 Recommended Operating Conditions

The Recommended Operating Conditions indicate the limits, inside which the device should be operated, to guarantee the performance given in Electrical Specifications Operating outside these limits may not necessarily cause damage to the device, but the performance may degrade outside the limits of the electrical specifications. For limits, above which damage may occur, see Absolute Maximum Ratings. Min Nominal Max Units TA, Ambient Temperature -55 +25 +100 °C LO drive power +15 +20 +25 dBm RF/IF input power +10 dBm

3.4 Sequencing Requirements

There is no requirement to apply power to the ports in a specific order. However, it is recommended to provide a 50Ω termination to each port before applying power. This is a passive diode mixer that requires no DC bias.

3.5 Electrical Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system. Typical data shown is for a down conversion application with a +20dBm sine wave LO input. Min and Max limits apply only to our connectorized units and are guaranteed at TA=+25°C. All bare die are 100% DC tested and visually inspected. Parameter Test Conditions Min Typical Max Units RF (Pin 13) Frequency Range 10 40 GHz LO (Pin 19) Frequency Range 10 40 I (Pin 7) Frequency Range 0 10 Q (Pin 9) Frequency Range 0 10 Conversion Loss (CL)2 RF/LO = 10 – 40 GHz I+Q = DC – 0.2 GHz 9 dB RF/LO = 10 - 40 GHz I = DC - 0.2 GHz 12 15 RF/LO = 10 - 40 GHz I = 0.2 - 10 GHz 16 RF/LO = 10 - 40 GHz Q = DC - 0.2 GHz 12 15 RF/LO = 10 - 40 GHz Q = 0.2 - 10 GHz 15 Noise Figure (NF)3 RF/LO = 10 - 40 GHz I = DC - 0.2 GHz 12 dB RF/LO = 10 - 40 GHz Q = DC - 0.2 GHz 12 Image Rejection (IR)4 RF/LO = 10 - 40 GHz I+Q = DC - 0.2 GHz 35 dBc Amplitude Balance 0.2 dB Phase Balance 5 ° Isolation LO to RF RF/LO = 10 - 40 GHz 40 dB LO to IF IF/LO = 10 - 40 GHz 50 RF to IF RF/IF = 10 - 40 GHz 45 Input IP3 (IIP3)5 I+Q RF/LO = 10 - 38 GHz I = DC - 0.2 GHz +26 dBm Input 1 dB Gain Compression Point (P1dB) I +11 dBm Q +12 2 Measured as an I/Q down converter. (i.e., I and Q powers are not combined) 3 Mixer Noise Figure typically measures within 0.5 dB of conversion loss for IF frequencies greater than 5 MHz.

4 Image Rejection and Single sideband performance plots are defined by the upper sideband (USB)

or lower sideband (LSB) with respect to the LO signal. Plots are defined by which sideband is selected by the external IF quadrature hybrid.

5 Typical IIP3 is measured with I and Q ports combined with an external IF quadrature hybrid

coupler.

3.6 Typical Performance Plots6

The test conditions and frequency plan below applies to all following sections, unless otherwise specified. Parameter Pin Start Nominal Stop Units RF Input Frequency 5 45 GHz RF Input Power -10 dBm LO Input Frequency 5.091 45.091 GHz LO Input Power +20 dBm IF Output Frequency I 7 91 MHz Q 9 91 I+Q7 7+9 91 TA, Ambient Temperature +25 °C Z0, System Impedance 50 Ω

6 I output means that the IF output signal is measured at the I port of the mixer and the Q port is

loaded. Q output means the IF output signal is measured at the Q port of the mixer while the I port is loaded.

7 I+Q measurements taken with an external quadrature hybrid attached to the I and Q ports of th e

mixer. Orientation depends on up conversion or down conversion measurement. -20 -18 -16 -14 -12 -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) I/Q Conversion Loss (dB) I Output Q Output -70 -60 -50 -40 -30 -20 -10 5 10 15 20 25 30 35 40 45 LO Frequency (GHz) LO to IF Isolation (dB) I Output Q Output -70 -60 -50 -40 -30 -20 -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) RF to IF Isolation (dB) I Output Q Output

www.markimicrowave.com MMIQ-1040HSM Copyright © [2020] Marki Microwave, Inc. All Rights Reserved. P a g e 7 | R e v . - -70 -60 -50 -40 -30 -20 -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) RF Return Loss (dB) -70 -60 -50 -40 -30 -20 -10 5 10 15 20 25 30 35 40 45 LO Frequency (GHz) LO Return Loss (dB) -10 0 3 6 9 12 15 IF Frequency (GHz) Relative IF Response - 10GHz RF (dB) I Output Q Output -40 -35 -30 -25 -20 -15 -10 0 3 6 9 12 15 IF Frequency (GHz) IF Return Loss - 10GHz RF (dB) I Output Q Output -10 0 3 6 9 12 15 IF Frequency (GHz) Relative IF Response - 30GHz RF (dB) I Output Q Output -40 -35 -30 -25 -20 -15 -10 0 3 6 9 12 15 IF Frequency (GHz) IF Return Loss - 30GHz RF (dB) I Output Q Output -1.5 -0.5 0.5 1.5 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) I/Q Amplitude Balance vs LO Power (dB) +20dBm +17dBm +14dBm 100 110 120 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) I/Q Phase Balance vs LO Power (dB) +20dBm +17dBm +14dBm

www.markimicrowave.com MMIQ-1040HSM Copyright © [2020] Marki Microwave, Inc. All Rights Reserved. P a g e 8 | R e v . - -20 -18 -16 -14 -12 -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) USB I+Q Downconversion Loss vs LO Power (dB) +22dBm +20dBm +17dBm +14dBm -50 -45 -40 -35 -30 -25 -20 -15 -10 5 10 15 20 25 30 35 40 45 LO Frequency (GHz) USB I+Q Downconversion Image Rejection vs LO Power (dBc) +22dBm +20dBm +17dBm +14dBm -20 -18 -16 -14 -12 -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) LSB I+Q Downconversion Loss vs LO Power (dB) +22dBm +20dBm +17dBm +14dBm -50 -45 -40 -35 -30 -25 -20 -15 -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) LSB I+Q Downconversion Image Rejection vs LO Power (dBc) +22dBm +20dBm +17dBm +14dBm -20 -18 -16 -14 -12 -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) USB I+Q Upconversion Loss vs LO Power (dB) +22dBm +20dBm +17dBm +14dBm -50 -45 -40 -35 -30 -25 -20 -15 -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) USB I+Q Upconversion Sideband Suppression vs LO Power (dB) +22dBm +20dBm +17dBm +14dBm -20 -18 -16 -14 -12 -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) LSB I+Q Upconversion Loss vs LO Power (dB) +22dBm +20dBm +17dBm +14dBm -50 -45 -40 -35 -30 -25 -20 -15 -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) LSB I+Q Upconversion Sideband Suppression vs LO Power (dB) +22dBm +20dBm +17dBm +14dBm

3.6.1 Typical Performance Plots: IP3

RF Frequency (GHz) Input IP3 (dBm) -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) Output IP3 (dBm) 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) Input IP3 vs LO Power (dBm) +22dBm +20dBm +17dBm +14dBm -10 5 10 15 20 25 30 35 40 45 RF Frequency (GHz) Output IP3 vs LO Power (dBm) +22dBm +20dBm +17dBm +14dBm

3.6.2 Typical Performance Plots: P1dB

Input 1dB compression point (P1dB) plots are taken with the following test conditions and frequency plan: Parameter Pin Start Nominal Stop Units RF Input Frequency

10 GHz

10.091 GHz

IF Output Frequency I 7 91 MHz Q 9 91 TA, Ambient Temperature +25 °C Z0, System Impedance 50 Ω 8 10 12 14 16 18 20 22 LO Power (dBm) Input 1dB Compression Point: 10GHz RF, 91MHz IF (dBm) I Q 8 10 12 14 16 18 20 22 LO Power (dBm) Output 1dB Compression Point: 10GHz RF, 91MHz IF (dBm) I Q

3.6.3 Typical Performance Plots: LO Harmonic Isolation

LO Harmonic Isolation plots taken with the following test conditions and based on the following fundamental input signal frequency plan: Parameter Port Start Nominal Stop Units RF Input Frequency 5 45 GHz RF Input Power -10 dBm LO Input Frequency 5.091 45.091 GHz LO Input Power +20 dBm IF Output Frequency I 7 91 MHz Q 9 91 TA, Ambient Temperature +25 °C Z0, System Impedance 50 Ω -80 -70 -60 -50 -40 -30 -20 -10 5 10 15 20 25 30 35 40 45 LO Frequency (GHz) Even LO Harmonic to RF Isolation (dB) 2xLO -80 -70 -60 -50 -40 -30 -20 -10 5 10 15 20 25 30 35 40 45 LO Frequency (GHz) Odd LO Harmonic to RF Isolation (dB) 3xLO -90 -80 -70 -60 -50 -40 -30 -20 -10 5 10 15 20 25 30 35 40 45 LO Frequency (GHz) Even LO Harmonic to IF Isolation (dB) 2xLO to I Port 2xLO to Q Port -90 -80 -70 -60 -50 -40 -30 -20 -10 5 10 15 20 25 30 35 40 45 LO Frequency (GHz) Odd LO Harmonic to IF Isolation (dB) 3xLO to I Port 3xLO to Q Port

3.6.6 Typical Spurious Performance: Down-Conversion

Typical spurious data is provided by selecting RF and LO frequencies (± m*LO ± n*RF) within the RF/LO bands, to create a spurious output within the IF band. The mixer is swept across the full spurious band and the mean is calculated. The numbers shown in the table below are for a -10 dBm RF input. Spurious suppression is scaled for different RF power levels by (n-1), where “n” is the RF spur order. For example, if the 2RF x 2LO spur is 60 dBc for a -10 dBm input, so a -20 dBm RF input creates a spur that is (2-1) x (-10 dB) lower, or 70 dBc. Data is shown for the frequency plan in 3.6 Typical Performance. mLOx0RF plots can be found in section 3.6.3 Typical Performance Plots: LO Harmonic Isolation. 0LOx1RF plot is identical to the plot of LO-RF isolation. For approximate spur levels, see MMIQ-1040L datasheet section 3.6.6. Typical Down-conversion spurious suppression (dBc): I Port (Q Port) -10 dBm RF Input 0xLO 1xLO 2xLO 3xLO 4xLO 5xLO 0xRF - 29 (33) 57 (60) 50 (54) 69 (71) N/A 1xRF Refrence 31 (26) 18 (15) 34 (35) N/A 2xRF N/A 52 (52) 60 (69) 58 (57) 59 (69) 62 (58) 3xRF N/A 59 (60) 82 (84) 83 (78) 82 (86) 77 (78) 4xRF N/A N/A 104 (107) 98 (99) 108 (107) 102 (106) 5xRF N/A N/A 124 (127) 120 (116) 130 (133) 125 (124)

3.6.7 Typical Spurious Performance: Up-Conversion

Typical spurious data is taken by mixing an input within the IF band, with LO frequencies (± m*LO ± n*IF), to create a spurious output within the RF output band. The mixer is swept across the full spurious output band and the mean is calculated. The numbers shown in the table below are for a -10 dBm IF input. Spurious suppression is scaled for different IF input power levels by (n-1), where “n” is the IF spur order. For example, if the 2IFx1LO spur is typically 57 dBc for a -10 dBm input with a sine-wave LO, so a -20 dBm IF input creates a spur that is (2-1) x (-10 dB) lower, or 67 dBc. Data is shown for the frequency plan in 3.6 Typical Performance. For approximate spur levels, see MMIQ-1040L datasheet section 3.6.6. Typical Down-conversion spurious suppression (dBc): I Port (Q Port) -10 dBm RF Input 0xLO 1xLO 2xLO 3xLO 4xLO 5xLO 0xIF - 30 (34) 57 (57) 49 (51) 69 (70) N/A 1xIF Reference 31 (31) 17 (14) 37 (32) N/A 2xIF N/A 57 (65) 54 (48) 51 (64) 54 (58) N/A 3xIF N/A 64 (61) 69 (77) 65 (64) 65 (76) N/A 4xIF N/A 97 (100) 90 (90) 95 (104) 99 (92) N/A 5xIF N/A 106 (106) 120 (125) 104 (105) 121 (125) 127 (131)

4.1 Detailed Description

MMIQ-1040 belongs to Marki Microwave’s MMIQ family of mixers. The MMIQ product line consists of passive GaAs MMIC mixers designed and fabricated with GaAs Schottky diodes. MMIQ mixers offer excellent amplitude and phase balance due to its on-chip LO quadrature hybrid. Up to 50 dB of image rejection (i.e., single sideband suppression) can be obtained by using the MMIQ-1040 as an image rejection or single sideband mixer. The MMIQ-1040LSM is the sister mixer of the MMIQ-1040HSM. The MMIQ-1040LSM requires a lower LO drive to operate the mixer. In exchange, the MMIQ-1040LSM displays higher linearity (i.e., higher IIP3, P1dB, Spurious Suppression) than the MMIQ-1040HSM. Marki H and L diodes correspond to different diode forward turn on voltages. Band support for the low frequency 5G frequencies in K and Ka bands is offered by the ultra- broadband performance of the mixer’s RF and LO ports (ports 13 and 19). Direct baseband to Ka band frequency conversions are available by using of this mixer as an up-converter. Traditional use of this mixer to do image reject or single sideband mixing is available with an external IF quadrature hybrid. The MMIQ-1040 is also suitable for use as a Vector Modulator through DC bias of the I and Q ports (pins 7 and 9). Pin 13, the RF port, and Pin 19, the LO port, supports a 10-40 GHz signal. Pins 7 and 9, the I and Q ports, support a DC-10 GHz signal. A signal may be input into any port of the mixer which supports that signal’s frequency. This is the basis of using the mixer as a band shifter. For a given LO power within the recommended operating range, the RF (in the case of a down conversion) or IF (in the case of an up conversion) input power should be below the input 1 dB compression point to avoid signal distortion. The input 1 dB compression point will vary across the mixer’s operating bandwidth and with LO input power. Careful characterization is required for optimal performance for each application. There is no minimum small signal input power required for operation. Excessive RF/IF input power increases non-desired spurious output power and degrades the fundamental conversion loss. Excessive LO input power can also cause this effect. The table below describes how to use an IQ mixer and quad hybrid to select a single sideband. Hybrid Port Mixer Port Sideband Selected 0 I 90 Q 90 I 0 Q Hybrid Port Mixer Port Sideband Selected 0 I 90 Q 90 I 0 Q Up Conversion Lower Sideband Upper Sideband Down Conversion Upper Sideband Lower Sideband Pin 9 Pin 19 Pin 7 Pin 13

4.2 Down-Converter

A down converter is a mixer application which takes a high frequency small signal RF input, and a high frequency large signal LO input and mixes the signals together to produce a low frequency IF output. The fundamental 1RFx1LO outputs present at the IF port are the fLO-RF and fLO+RF tones. The desired output in a down conversion is typically the fLO-RF term. An image frequency at fImage=f2LO-RF will also down convert to the fLO-RF frequency. The above illustration shows the relative location of the image frequency for a highside LO, or the frequency plan for which fLO > fRF. To use the IQ mixer as a down converter, input a high frequency small signal RF input into pin 13, a high frequency large signal LO input into pin 19, and pull the low frequency IF output from pins 7 and 9. Pins 7 and 9 will output the IF signals I and Q. I and Q IF outputs will be at the same frequency but 90° out of phase (i.e., I and Q are in quadrature). If only a single IF output is desired, terminate either the I or Q ports with a wideband 50Ω load. This is the input scheme was used to take I/Q down-conversion data found in the Typical Performance Plots section.

4.2.1 Image Reject Down-Converter

An image reject mixer is a mixer which rejects the down converted image frequency from the IF output. Image reject mixers are constructed using an external quadrature hybrid attached to the I and Q (i.e., IF) output ports of an IQ mixer. Using the external IF quadrature hybrid, one can select whether the upper sideband or lower sideband signal is suppressed with respect to the LO signal. To use the IQ mixer as an image reject mixer, input the high frequency small signal RF into pin 13 and a high frequency large signal LO input into pin 19. Take the combined I+Q down converted signal through the IF quadrature hybrid. Select the upper sideband (i.e., suppress the lower sideband) by connecting the I port to the 0° port of the IF quadrature hybrid and attach the Q port to the 90° port of the IF quadrature hybrid. Select the lower sideband (i.e., suppress the upper sideband) by attaching the I port to the 90° port of the IF quadrature hybrid and attach the Q port to the 0° port of the IF quadrature hybrid. This is the input scheme was used to take image rejection down-conversion data found in the Typical Performance Plots section. Pin 13 Input Pin 19 Input Pin 9 Output Pin 7 Output c Pin 13 Input Pin 19 Pin 9 Output Pin 7 Output Input

4.3 Up-Converter

An up converter is a mixer application which takes a low frequency small signal IF input, and a high frequency large signal LO input and mixes the signal together to produce a high frequency RF output. The fundamental 1IFx1LO outputs present at the RF port are the fLO-IF and fLO+RF tones. An up conversion can select either the fLO-IF or the fLO+IF tones. The above illustration shows both up converted sidebands with either an I or Q port input signal. To use the IQ mixer as an up converter, input a low frequency small signal IF input into pin 7 or 4, a high frequency large signal LO input into pin 19, and pull the high frequency RF output from pin 13. Input into the Q port will result in a up converted signal that is 90° out of phase with the up converted I port input signal. If only a single IF input is desired, terminate either the I or Q ports with a wideband 50Ω load. This is the input scheme used to take I/Q up-conversion data found in the Typical Performance Plots section.

4.3.1 Single Sideband Up-Converter

A single sideband mixer is a mixer which suppress the up converted image frequency from the RF output. Single sideband mixers are constructed using an external quadrature hybrid attached to the I and Q (i.e., IF) input ports. Using an external IF quadrature hybrid, one can select whether the upper sideband of the lower sideband signal is suppressed with respect to the LO signal. To use the IQ mixer as a single sideband mixer, input the low frequency small signal I+Q IF signal into the IF quadrature hybrid. The IF quadrature hybrid is attached to the I and Q ports of the IQ mixer. Input the high frequency large signal LO input into pin 19 and take the up converted high frequency RF signal from pin 13. Select the upper sideband (i.e., suppress the lower sideband) by attaching the I port to the 90° port of the IF quadrature hybrid and attach the Q port to the 0° port of the IF quadrature hybrid. Select the lower sideband (i.e., suppress the upper sideband) by attaching the I port to the 0° port of the IF quadrature hybrid and attach the Q port to the 90° port of the IF quadrature hybrid. This is the input scheme used to take single sideband up-conversion data found in the Typical Performance Plots section. cv Pin 13 Output Pin 19 Input Pin 9 Input Pin 7 Input Pin 13 Output Pin 9 Input Pin 7 Input Pin 19 Input

4.4 Band Shifter

A band shifter is an unusual application for a mixer. Band shifters take an IF signal and shift it to a different band, generally to either avoid interference or for rebroadcast at a different frequency. For cases in which the desired band shift cannot be employed by using a standard up or down conversion scheme, an exotic input scheme is required. A passive diode mixer is reciprocal on all ports. Pin 13, the RF port, supports a 10-40GHz signal. Pin 19, the LO port, supports a 10-40GHz signal. Pins 7 and 9, the IF ports, support a DC- 10GHz signal. 2 signals input into any combination of the 3 ports, RF, LO, or IF, will result in an output signal at the 3rd port. In addition, an output signal will be present at both input ports. By using the IF port, as a large signal input port, low frequency LO applications can be supported. The diagram above shows an IQ mixer being used as a band shifter. Using an IQ mixer as a band shifter allows for sideband suppression. This is identical to using the IQ mixer as a single sideband up converter. However, the large signal input port is now pin 7 + pin 9 versus pin 19. Selection of the output tone is done through the orientation of the LO quadrature hybrid. To use the mixer as a single sideband band shifter, input a low frequency large signal LO into the external LO quadrature hybrid. Input the high frequency small signal IF signal into Pin 19 and take the high frequency RF output from pin 13. Select the upper sideband (i.e., suppress the lower sideband) by connecting the I port to the 90° port of the IF quadrature hybrid and connect the Q port to the 0° port of the LO quadrature hybrid. Select the lower sideband (i.e., suppress the upper sideband) by connecting the I port to the 0° port of the LO quadrature hybrid and connect the Q port to the 90° port of the LO quadrature hybrid. This is the measurement scheme used to take vector modulator data found in the Typical Performance Plots: Vector Modulator section. Using this input scheme requires careful accounting of which input signal is injecting which port. Injecting a signal into any port which does not support the correct band will lead to a degraded o r no output response. Abide by the maximum DC current input into the I and Q ports of the mixer or otherwise irreversible damage to the mixer will occur. The limitation in use of the mixer as an image reject band shifter is in the bandwidth of the external LO quadrature hybrid and bandwidth of the I and Q ports. Pin 13 Output Pin 9 Input Pin 7 Input Pin 19 Input

4.5 Vector Modulator

A vector modulator is a device that can modulate an input signal’s amplitude and phase. Similar to using a double balanced mixer as a phase modulator or phase shifter, an IQ mixer can be used as a vector modulator. An IQ mixer can be used as a vector modulator by inputting DC current into both the I and Q ports. Injecting DC current into both the I and Q ports forward biases both mixer cores and causes them to be shorted. This connects the RF and LO baluns allowing the input signal to pass from balun to balun without a frequency conversion. Modulating the DC current into either or both I and Q mixers causes both the phase and amplitude to modulate based on the polarity of the input current and the magnitude of the input current. Modulating only the I or Q mixers causes the device to behave as a biphase modulator (i.e., the device can only swing the phase from +90° to -90°). To use the IQ mixer as a vector modulator, supply a DC current sufficient to turn on the mixer through both the I and Q ports. An example bias condition is given in section Error! Reference s ource not found. for the MMIQ-1040HSM with the phase set to 0°, 90°, 180°, and 270° for a 20GHz input. Current limiting the DC source to the maximum DC current value found in section

3.1 Absolute Maximum Ratings is recommended to prevent irreversible damage to the vector

modulator. The typical DC current required to turn on the vector modulator is <30mA. This is the input scheme used to take vector modulator data found in the Typical Performance Plots: Vector Modulation section. It is recommended to sequence the vector modulator by slowly increasing the DC bias until the vector modulator is operating at the user desired condition. Near the band edges of the vector modulator, more current than is typical for mid-band operation may be necessary to achieve the same amplitude and phase shift. This is due to the on chip LO quadrature hybrid operating near it’s band edge.

5.1 SM-2 Package Outline Drawing

Notes: 1. Substrate Material is LCP. 2. I/O Leads and Die Paddle are 0.05 microns Gold (Max), over 0.02 microns Palladium (Min), over 0.5 microns Nickel (Min). 3. All unconnected pins should be connected to PCB RF ground.

5.2 Surface Mount Landing Pattern

Click here for a DXF of the above layout. Click here for leaded solder reflow. Click here for lead-free solder reflow.

5.3 EVAL Package Outline Drawing

Marki Microwave reserves the right to make changes to the product(s) or information contained herein without notice. Marki Microwave makes no warranty, representation, or guarantee regarding the suitability of its products for any particular purpose, nor does Marki Microwave assume any liability whatsoever arising out of the use or application of any product. © Marki Microwave, Inc. www.markimicrowave.com

Product Information

MMIQ-1040HSM-2 specifications and overview.

Summary

Passive GaAs MMIC IQ MixerMMIQ-1040HSM

Description

Passive GaAs MMIC IQ MixerMMIQ-1040HSM

Source title MMIQ-1040HSM-2 Datasheet(PDF) - Marki Microwave

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