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| Digital Radio Receiver Down Converter Modules for 37 to 40 GHz Technical Data DRR1-38XX Features * Low Noise PHEMT MMIC Front End Amplifier * Image Reject Mixer * Integrated Silicon Bipolar VCO Local Oscillator * Low Phase Noise * Operated Over -30C to +70C * Excellent Tuning Linearity * Sample Output for Phase Locking Description This digital radio receiver module provides the RF receive and down conversion function for 38 GHz digital radios. This module offers excellent phase noise performance and can be easily phase locked to a frequency reference. The receiver module is ideal for use in radios using 2 and 4 FSK modulation. The low noise figure is achieved by using the Hewlett-Packard PHEMT MMIC technology coupled with an image reject mixer to minimize the noise figure. The receiver module features an integrated ultra low noise silicon bipolar VCO operating in the S/C band as the local oscillator. A portion of the oscillator output is coupled off and is applied to a frequency divider network. The low frequency output from the frequency divider can be used to phase lock the source. The local oscillator output is applied to a frequency multiplier network to produce the desired LO frequency to the mixer. Applications The digital radio receiver module provides the total RF receive and down conversion function in radios operating in the 37 to 40 GHz band. Block Diagram Receiver Module Tuning Voltage LO X3 BPF AMP AMP X3 AMP Signal Sample Output MMIC +4 MMIC AMP BPF MMIC RF Input 37.0 to 40.0 GHz LNA MIXER IF Output 5965-5088E 8-8 DRR1-38XX Absolute Maximum Ratings (TA = -30 to +70C) Parameters DC Circuit Power +8.5 +5.0 -5.0 Tuning Voltage Units Volts Volts Volts Volts Ratings 10 +5.5 -5.5 14 Notes: 1. Operation in excess of any one of these parameters may result in permanent damage. 2. A thermal interface medium must be used between the bottom of the package and its mating surface to ensure optimum heat transfer. DRR1-38XX Electrical Characteristics Parameters Units Min. 37 630 or 1260 20 RF - IF 18 7.5 -30 -20 -17 -15 -15 8 14 10 1,010 -10 10 13 1,080 0 -60 -80 12 1,094 5 Min 27 1 9 70 16 Min 1.5 9.5 Max Typ. Max. 39.5 Extended Range 39.5 - 40.0 40 RF Tuning Range GHz IF Frequency MHz IF Bandwidth MHz LO Frequency GHz Gain[1] dB Gain Flatness over 300 MHz dB Noise Figure dB Operating Temperature Range C Power Input at P-1dB dBm LO Leakage at I[2] dBm LO Leakage at R[3] dBm Return Loss RF Port[4] dB Return Loss IF Port dB Image Rejection dB Sample Out Frequency MHz Sample Out Power dBm Spurious Output[5] dBc Phase Noise @ 100 KHz dBc/Hz Tuning Voltage V Input Capacitance, Nom pf LO Tuning Sensitivity MHz/V LO Tuning Sensitivity Variation DC Circuit Power: 8.5 Volts mA 5 Volts mA -5 Volts mA Case Dimensions inches Max Power at Input/no damage dBm Humidity Non Condensing % Condensing % Connectors -83 1 15 Max 1,000 400 500 1.5 : 1 270 350 470 650 20 30 3.5 x 1.25 x 0.40 7 85 95 WR 28 Notes: 1. Gain degrades to 16 dB minimum from 39.5 to 40 GHz. 2. LO and Harmonic/sub-harmonic leakage at I with RF terminated into a waveguide. 3. LO and Harmonic/sub-harmonic leakage at R up to 50 GHz. 4. RF port return loss degrades to 5 dB minimum from 39.5 to 40 GHz. 5. Measured at IF port within the IF bandwidth with single tone RF input of < - 20 dBm. 8-9 DRR1-38XX Typical Performance 28 26 24 22 20 18 Spec Min 16 36.5 37.5 38.5 39.5 40.5 T = +25C T = -30C T = +70C Spec Max 22 20 T = +25C T = -30C T = +70C 9 Spec Max CONVERSION GAIN (dB) IMAGE REJECTION (dB) 18 16 14 12 10 8 36.5 NOISE FIGURE (dB) 8 7 T = +25C T = -30C T = +70C 6 Spec Min 37.5 38.5 39.5 40.5 5 36.5 37.5 38.5 39.5 40.5 FREQUENCY (GHz) FREQUENCY (GHz) FREQUENCY (GHz) Figure 1. Conversion Gain vs. Frequency. Figure 2. Image Rejection vs. Frequency. Figure 3. Noise Figure vs. Frequency. -5 T = +25C T = -30C T = +70C -10 -20 41 600 -40 40 FREQUENCY (GHz) TUNING VOLTAGE 39 500 dBc (Hz) -60 -15 400 38 MODULATION SENSITIVITY -80 -20 Spec Min -25 36.5 37.5 38.5 39.5 40.5 -100 37 300 -120 1 10 100 1000 KHz Offset from Carrier 36 2 4 6 8 10 12 14 TUNING VOLTAGE (V) 200 FREQUENCY (GHz) Figure 4. Power In at P1dB Out vs. Frequency. Figure 5. Phase Noise at 40 GHz vs. KHz Offset from Carrier. Figure 6. Tuning Voltage vs. Frequency and Modulation Sensitivity. Powering Up Instructions The -5 volts must be applied to the receiver module before applying the +5 volts. Likewise when shutting down the receiver module the +5 volts must be removed before the -5 volts is turned off. The +8.5 volts can be turned on in any sequence. Failure to follow this procedure could cause permanent damage to the module. Mounting Instructions Case must be mounted firmly, with screws, to an adequate metallic structure that has sufficient thermal properties to maintain the module case at a temperature not to exceed 70C. Product Options Specify part number followed by option. For example: DR R 1 - 38 X X Model Number Prefix = Digital Radio R = Receiver Module Internal Use 1 = 630 MHz IF Frequency 2 = 1260 MHz IF Frequency 38 = 37 to 40 GHz Frequency Band 8-10 3 = WR-28 Waveguide Connector MODULATION SENSITIVITY (MHz/V) P IN (dBm) Case Dimensions (specified in inches) H DRRI-38XX S/N XXXX D/C XXXX 1.250 GND 1F +8.5V -5V +5V +8.5V GND F/4 +5V VT GND 11x .200 2.700 3.50 1.10 8x .100 .40 MAX 11x .220 1.70 11x O .025 2.35 SEE DETAIL A .120 2.430 .125 6x O .120 THRU .445 .500 .445 .500 .700 .530 .112 .500 .224 O .067 .001 .100 4X 4-40 UNC-2B .110 .328 DETAIL A 8-11 |
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