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 -30°C to
+70° C
• Excellent Tuning Linearity
• Sample Output for Phase
Locking
Block Diagram
Receiver Module
Tuning
Voltage
Signal
Sample
Output
IF
Output
LO X3
+4
BPF
AMP
AMP
MMIC
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
X3
AMP
MMIC
BPF
RF
Input
AMP
MMIC
LNA
MIXER
37.0 to
40.0 GHz
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.
5965-5088E
8-8
DRR1-38XX Absolute Maximum Ratings (TA = -30 to +70ºC)
Parameters Units Ratings
DC Circuit Power +8.5 Volts 10
+5.0 Volts +5.5
-5.0 Volts -5.5
Tuning Voltage Volts 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. Typ. Max.
RF Tuning Range GHz 37 39.5 40
IF Frequency MHz 630 or 1260
IF Bandwidth MHz ± 20
LO Frequency GHz RF – IF
[1]
Gain
Gain Flatness over 300 MHz dB ±1 ±1.5
Noise Figure dB 7.5 9 9.5 Max
Operating Temperature Range °C -30 70
Power Input at P-1dB dBm -20 -17
LO Leakage at I
LO Leakage at R
Return Loss RF Port
Return Loss IF Port dB 14
Image Rejection dB 10 13
Sample Out Frequency MHz 1,010 1,080 1,094
Sample Out Power dBm -10 0
Spurious Output
Phase Noise @ 100 KHz dBc/Hz -83 -80
Tuning Voltage V 1 12 15 Max
Input Capacitance, Nom pf 1,000
LO Tuning Sensitivity MHz/V 400 500
LO Tuning Sensitivity Variation 1.5 : 1
DC Circuit Power: 8.5 Volts mA 270 350
5 Volts mA 470 650
-5 Volts m A 20 30
Case Dimensions inches 3.5 x 1.25 x 0.40
Max Power at Input/no damage dBm 7
Humidity Non Condensing % 85
Condensing % 95
Connectors WR 28
[2]
[3]
[4]
[5]
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.
dB 18 27 16 Min
dBm -15
dBm -15
dB 8 10 5 Min
dBc -60
Extended
Range
39.5 – 40.0
8-9
DRR1-38XX Typical Performance
28
Spec Max
26
(dB)
24
22
T = +25°C
20
T = –30°C
T = +70°C
CONVERSION GAIN
18
Spec Min
16
36.5 39.538.537.5 40.5
FREQUENCY (GHz)
Figure 1. Conversion Gain vs.
Frequency.
22
20
(dB)
18
16
14
12
IMAGE REJECTION
10
8
36.5 38.5 39.537.5 40.5
Figure 2. Image Rejection vs.
Frequency.
T = +25°C
T = –30°C
T = +70°C
Spec Min
FREQUENCY (GHz)
9
Spec Max
8
(dB)
7
T = +25°C
NOISE FIGURE
6
5
36.5 38.5 39.537.5 40.5
FREQUENCY (GHz)
T = –30°C
T = +70°C
Figure 3. Noise Figure vs. Frequency.
-5
T = +25°C
T = –30°C
T = +70°C
-10
-15
(dBm)
IN
P
-20
Spec Min
-25
36.5 38.5 39.537.5 40.5
FREQUENCY (GHz)
Figure 4. Power In at P
Frequency.
1dB
Out vs.
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
-20
-40
-60
(Hz)
dBc
-80
-100
-120
1 10 100 1000
KHz Offset from Carrier
Figure 5. Phase Noise at 40 GHz vs.
KHz Offset from Carrier.
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.
41
40
(GHz)
39
38
FREQUENCY
37
36
TUNING VOLTAGE
MODULATION
SENSITIVITY
2 4 6 8 10 12 14
TUNING VOLTAGE (V)
Figure 6. Tuning Voltage vs. Frequency
and Modulation Sensitivity.
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 70° C.
600
500
400
300
MODULATION SENSITIVITY (MHz/V)
200
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
8-10
3 = WR-28 Waveguide Connector
1 = 630 MHz IF Frequency
2 = 1260 MHz IF Frequency
38 = 37 to 40 GHz Frequency Band
Case Dimensions (specified in inches)
1.250
H
DRRI-38XX
S/N XXXX
D/C XXXX
11x .200
.40 MAX
SEE DETAIL A
.445
.445
.120
1.10
1.70
GND
2.35
1F
+8.5V
-5V
3.50
8x .100
+5V
+8.5V
2.700
2.430
GND
F/4
+5V
VT
GND
11x .220
11x Ø .025
.500
.500
6x Ø
.125
.120
THRU
.224
.500
Ø .067 ±.001
.100
4X 4-40 UNC-2B
.110
.700
.530
.112
.328
DETAIL A
8-11
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