MLIQ18 The MLIQ18 is a miniaturized, multi-octave 2-18 GHz IQ mixer. It features matched double balanced mixers connected with an integrated LO hybrid and RF power divider. It can be used for either up or downconversion. Applications include communications or radar systems with advanced digital modulation formats and phase modulated signals, test and measurement, or electronic warfare. Image reject or single sideband modulation with excellent suppression is possible with use of an external IF quadrature (9 ) hybrid. Features Compact Chip Style Package (.37 x.16 x.1 ) CAD Optimized for Superior Isolation and Spurious Response Broadband Performance Excellent Unit-to-Unit Repeatability Fully nonlinear software models available with Marki PDK for Microwave Office RoHS Compliant Mixer Line I/Q Suitable Alternative for Models IQ-37, IQ-318, IQ-459, IQ-618, IQ-714, IQ-917 Electrical Specifications - Specifications guaranteed from 5 to +1 C, measured in a 5Ω system. Parameter LO RF IF Min Typ Max Diode Option 1 Conversion Loss (db) (GHz) (GHz) (GHz) LO drive level (dbm) 2-18 DC 8.5 11.5 (Combined IF with Test Hybrid) 2-3.5 1.5 13.5 Image Rejection (db) (Combined IF with Test Hybrid) See Plots I/Q Amplitude Balance (db).21 I/Q Quadrature Phase Balance (Degrees) Isolation (db) LO-RF LO-IF RF-IF Input 1 db Compression (dbm) +8 L (+11 to +18) Input Two-Tone Intercept (dbm) +18 L (+11 to +18) 1 Contact factory for other diode options. Part Number Options 5 See Plots Model Number Description MLIQ18LCH 1, 3 Low Barrier Diode, I Port Configuration MLIQ18L 2, 3 Low Barrier Diode, Connectorized 1 Chip package connects to external circuit through wire bondable gold pads. See page 5 for plating details. 2 Connectorized package consists of chip package wire bonded to a substrate, equivalent to an evaluation board. 3 Note: For port locations and I/O designations, refer to the drawing on page 5 of this document. 215 Vineyard Court, Morgan Hill, CA 9537 Ph: 48.778.42 Fax 48.778.43 info@markimicrowave.com
Page 2 MLIQ18 Figure 1a. I/Q Mixer Schematic Figure 1b. Image Reject Mixer Schematic Figure 1c. Single Sideband Mixer Schematic
Page 3 MLIQ18-4 -6-8 -1-12 -14-16 -18 Combined IF Downconversion Loss (db) 1-4 RF in < LO RF in > LO 2 4 6 8 1 12 14 16 18 2 Typical Performance -1 5-3 -35-4 -45 Combined IF Downconversion Image Rejection (db) 1-4 RF in < LO RF in > LO 2 4 6 8 1 12 14 16 18 2-4 -6-8 -1-12 -14-16 -18 Combined IF Upconversion Loss (db) 1-4 RF out < LO RF out > LO 2 4 6 8 1 12 14 16 18 2-1 5-3 -35-4 -45 Combined IF Upconversion Sideband Suppression (db) 1-4 RF out < LO RF out > LO 2 4 6 8 1 12 14 16 18 2-4 -6-8 -1-12 -14-16 -18 Individual I/Q Conversion Loss (db) 1-4 Port "I" Port "Q" 2 4 6 8 1 12 14 16 18 2-4 -6-8 -1-12 -14 Relative IF Response (db).5 1 1.5 2 2.5 3 3.5 4 4.5 IF Frequency (GHz) 3 Port "I" to Port "Q" IF Amplitude Match (db) -6 Port "I" to Port "Q" IF Quadrature Phase Deviation (Degrees) 2-7 1-8 -9-1 -1-11 -3 2 4 6 8 1 12 14 16 18 2-12 2 4 6 8 1 12 14 16 18 2
Page 4 MLIQ18 Typical Performance (cont.) LO to RF Isolation (db) LO to IF Isolation (db) -1-1 -3-3 -4-4 -6 2 4 6 8 1 12 14 16 18 2-6 2 4 6 8 1 12 14 16 18 2 LO Frequency (GHz) LO Frequency (GHz) RF to IF Isolation (db) IF Return Loss (db) -1-3 -1-4 -6 2 4 6 8 1 12 14 16 18 2.5 1 1.5 2 2.5 3 3.5 4 4.5 IF Frequency (GHz) RF Return Loss (db) LO Return Loss (db) -1-1 2 4 6 8 1 12 14 16 18 2 2 4 6 8 1 12 14 16 18 2 LO Frequency (GHz) LO Frequency (GHz)
Page 5 MLIQ18 Typical Performance -1-3 -4-6 -7-8 -9 LO Even Harmonic to RF Isolation (db) 2xLO to RF 4xLO to RF 2 4 6 8 1 12 14 16 18-1 -3-4 -6-7 -8-9 LO Even Harmonic to IF Isolation (db) 2xLO to IF 4xLO to IF 2 4 6 8 1 12 14 16 18 LO Output Frequency (GHz) LO Output Frequency (GHz) -1-3 LO Odd Harmonic to RF Isolation (db) 3xLO to RF 5xLO to RF -1-3 LO Odd Harmonic to IF Isolation (db) 3xLO to IF 5xLO to IF -4-4 -6-6 -7-7 -8-8 -9 2 4 6 8 1 12 14 16 18-9 2 4 6 8 1 12 14 16 18 LO Output Frequency (GHz) LO Output Frequency (GHz) 2RF x 2LO Spurious Suppression (dbc) 2IF x 1LO Spurious Suppression (dbc) -1-1 -3-1 dbm RF Input -3-1 dbm IF Input -4-4 -6-6 -7-7 -8 2 4 6 8 1 12 14 16 18-8 2 4 6 8 1 12 14 16 18 RF Input Frequency (GHz) RF Input Frequency (GHz)
Page 6.16 [4.6].196 [4.98].171 [1.93].37 [9.4] L I.147 [3.73] Q R.5 sq. minimum bonding pad, 4 PL Ground pad, 8 PL.8 [2.3].5 [.13] min clearance MLIQ18.1 [.25].156 [3.96] PROJECTION INCH [MM] XXX=±.5 XX=±.2.366 [9.3] Figure 2a. Outline Drawing CH *CH Substrate material is.1 thick Ceramic. I/O traces and ground plane finish is 2.5 microns Au over.5 microns WTi. Wire Bonding - Ball or wedge bond with.25 mm (1 mil) diameter pure gold wire. Thermosonic wirebonding with a nominal stage temperature of 15 C and a ball bonding force of 4 to 5 grams or wedge bonding force of 18 to 22 grams is recommended. Use the minimum level of ultrasonic energy to achieve reliable wirebonds. Wirebonds should be started on the chip and terminated on the package or substrate. All bonds should be as short as possible <.31 mm (12 mils). 1.1 [27.94].55 [1.4].345.41 [8.76] [1.41].275 [6.98].825 [2.96] PROJECTION Port LO RF I/Q INCH [MM] XXX=±.5 XX=±.2 Connector Type SMA Female SMA Female SMA Female.375 [9.52] Typ.35 [8.89] I Q.345 [8.76].56 [14.22] microwave MLIQ218L L R D/C.67 [17.2].41 [1.41] Ø.67 [1.7] Thru, 4 PL Figure 2b. Outline Drawing - Packaged.155 Typ [3.94]
Page 7 MLIQ18 Downconversion Spurious Suppression Spurious data is taken by selecting RF and LO frequencies (+mlo+nrf) within the 2 to 18 GHz RF/LO bands, which create a 1 MHz IF spurious output. The mixer is swept across the full spurious band and the mean is calculated. The numbers shown in the table below are for a -1 dbm RF input. Spurious suppression is scaled for different RF power levels by (n-1), where n is the RF spur order. For example, the 2RFx2LO spur is 6 dbc for a -1 dbm input, so a dbm RF input creates a spur that is (2-1) x (-1 db) db lower, or 7 dbc. Typical Downconversion Spurious Suppression (dbc): L-diode 5-1 dbm RF Input xlo 1xLO 2xLO 3xLO 4xLO 5xLO 1xRF 18 Reference 19 1 3 18 2xRF 7 52 6 52 55 47 3xRF 81 6 74 66 71 67 4xRF 111 14 1 11 12 99 5xRF 125 15 112 111 117 114 Upconversion Spurious Suppression Spurious data is taken by mixing a 1 MHz IF with LO frequencies (+mlo+nif), which creates an RF within the 2 to 18 GHz RF 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 -1 dbm individual IF input, with the unused port terminated in 5 ohms. Spurious suppression is scaled for different IF input power levels by (n-1), where n is the IF spur order. For example, the 2IFx1LO spur is typically 63 dbc for a -1 dbm input, so a dbm IF input creates a spur that is (2-1) x (-1 db) db lower, or 73 dbc. Typical Upconversion Spurious Suppression (dbc): L-diode 5-1 dbm IF Input xlo 1xLO 2xLO 3xLO 4xLO 5xLO 1xIF 17 Reference 22 1 3 19 2xIF 6 63 5 56 44 58 3xIF 72 62 64 54 65 53 4xIF 19 1 9 91 78 86 5xIF 12 12 17 93 15 9
Page 8 MLIQ18 Port Description DC Interface Schematic LO The LO port is DC short to ground and AC matched to 5 Ohms from 2 to 18 GHz. Blocking capacitor is optional. LO RF The RF port is DC short to ground and AC matched to 5 Ohms from 2 to 18 GHz. Blocking capacitor is optional. RF I/Q The I/Q ports are DC coupled to the diodes. Blocking capacitor is optional. IF Absolute Maximum Ratings RF DC Current LO DC Current IF DC Current RF Power Handling (RF+LO) Operating Temperature Storage Temperature Parameter Maximum Rating 1 Amp 1 Amp 5 ma +25 dbm at +25 C, derated linearly to +2 dbm at +1 C 5ºC to +1ºC -65ºC to +125ºC DATA SHEET NOTES: 1. Mixer Conversion Loss and Rejection plots IF frequency is 6 MHz. 2. Mixer Noise Figure typically measures within.5 db of conversion loss for IF frequencies greater than 5 MHz. 3. Conversion Loss typically degrades less than.5 db for LO drives 2 db below the lowest and 3 db above highest nominal LO drive levels. 4. Conversion Loss typically degrades less than.5 db at +1 C and improves less than.5 db at 5 C. 5. Unless otherwise specified L diode data taken with +15 dbm LO drive. 6. Specifications are subject to change without notice. Contact Marki Microwave for the most recent specifications and data sheets. 7. Catalog mixer circuits are continually improved. Configuration control requires custom mixer model numbers and specifications. 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. 215 Vineyard Court, Morgan Hill, CA 9537 Ph: 48.778.42 Fax 48.778.43 info@markimicrowave.com www.markimicrowave.com