HMC136
v02.1007
GaAs MMIC BI-PHASE
MODULATOR, 4 - 8 GHz
Typical Applications
The HMC136 is suitable for:
• Wireless Local Loop
• LMDS & VSAT
Features
Chip Integrates Directly into MIC Designs
Carrier Suppression: 30 dB
Direct Modulation in the 4 - 8 GHz Band
Functions also as a Phase Detector
Die Size: 1.40 x 1.40 x 0.1 mm
• Point-to-Point Radios
• Test Equipment
4
Functional Diagram
General Description
The HMC136 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 out-
put 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.
Electrical Specifications, TA = +25° C, 5 mA Bias Current
Parameter
Min.
2.5
Typ.
4 - 8
8
Max.
10
Units
GHz
dB
Frequency Band
Insertion Loss
Return Loss, RF and LO Ports
Amplitude Balance
3.0
0.1
4.0
30
dB
0.5
6.0
dB
Phase Balance
deg
dBc
dBm
dBm
dBm
Carrier Supression (When driven with a 1 MHz square wave, 1.4 Vp-p)
Input Power for 1 dB Compression
Third Order Intercept, Input
25
4
8
10
25
15
Second Order Intercept, Input
35
Bias Current (Bias current forward biases internal Schottky diodes providing approximately 0.6 V
at the control port).
2
5
10
mA
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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