Hittite HMC135 Datasheet
MICROWAVE CORPORATION
GaAS MMIC BI-PHASE MODULATOR 1.8 - 5.2 GHz
HMC135
5
MODULATORS
DIE
FEBRUARY 2001
V01.0300
Features General Description
CHIP INTEGRATES DIRECTLY INTO MIC DESIGNS
30 dB OF CARRIER SUPPRESSION
DIRECT MODULATION IN THE 1.8-5.2 GHz BAND
FUNCTIONS ALSO AS A PHASE DETECTOR
The HMC135 Bi-Phase Modulator is designed
to phase-modulate an RF signal into reference
and 180 degree states. Device input is at the RF
port and output is at the LO port. The polarity of
the bias current at the control port (IF port)
defines the phase states. Excellent amplitude
and phase balance provided by closely matched
monolithic balun and diode circuits delivers 30
dB of carrier suppression in a tiny monolithic
chip.
The device also functions as a demodulator or
phase comparator. As a demodulator, data
emerges at the control port when a modulated
signal at the RF port is compared to a reference
signal at the LO port. As a phase comparator,
the phase angle between two signals applied to
the RF and LO ports is represented by an analog
voltage at the control port.
Except for carrier suppression, the data presented here was measured under static conditions in which a DC bias current (nominally 5
mA) is applied to the control port.
Guaranteed Performance, For 5 mA Bias Current, -55 to +85 deg C
Parameter Min. Typ. Max. Units
Frequency Band 1.8-5.2 GHz
Insertion Loss 911dB
Return Loss, RF and LO Ports 2.5 3.0 dB
Amplitude Balance 0.2 0.5 dB
Phase Balance 2.5 5.0 deg
Carrier Suppression
(When driven with a 1 MHz square wave, 1.4 Vp-p)
Input Power for 1 dB Compression 0 8 dBm
Third Order Intercept,Input 5 10 dBm
Second Order Intercept, Input 15 30 dBm
Bias Current (Bias currentforward biases internal Schottky diodes
providing approximately 0.6 V at the control port).
25 30 dBc
2510mA
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Web Site: www.hittite.com
5 - 2
MICROWAVE CORPORATION
HMC135 BI-PHASE MODULATOR 1.8 - 5.2 GHz
HMC135
V01.0300
Insertion Loss
0
-5
-10
-15
INSERTION LOSS (dB)
-20
FREQUENCY (GHz)
Phase Balance
10
8
6
4
2
0
-2
-4
-6
PHASE BALANCE (Deg)
-8
-10
1 23 456
FREQUENCY (GHz)
FEBRUARY 2001
Amplitude Balance
2
1
0
-1
AMPLITUDE BALANCE (dB)
-2
654321
123456
FREQUENCY (GHz)
Carrier Suppression
(For 1.4 Vp-p Square Wave Modulation at 1 MHz)
50
40
30
20
10
CARRIER SUPPRESSION (dBc)
0
2 3456
CARRIER FREQUENCY (GHz)
5
MODULATORS
DIE
Return Loss
0
-5
-10
-15
RETURN LOSS (dB)
-20
012345678
FREQUENCY (GHz)
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Web Site: www.hittite.com
5 - 3
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