Generation of mm wave using external modulation can be classified based on intensity, integration, and phase and carrier suppression
This is because the phase shift deviation does not affect the optical carrier suppression
Table 2 lists values of gain or RF carrier suppression
corresponding to various phase distances from 180 degrees.
TABLE I MA4IQP900M-1291 MODULATOR/DEMODULATOR TYPICAL PERFORMANCE Frequency (MHz) 850 to 960 Carrier suppression
(dBc) 39 Sideband suppression (dBc) 30 3 X I (dBc) 60 5 X I (dBc) 96 Output noise floor (dBm/Hz) -163 ACPR (dB) 68 Phase balance ([degrees]) 2.
1 dB) results in a typical carrier suppression
of -47 dBm at 2.
We believe both products will offer equipment manufacturers an unprecedented level of performance in terms of linearity, noise and carrier suppression
Test Type Device Function Verified I/Q Phase Balance Baseband Amplifiers/Filters I/Q Magnitude Balance Baseband Amplifiers/Filters I/Q DC Offset LO On-Chip Isolation Phase Noise PLL/VCO Performance Sideband Suppression Quadrature Performance Carrier Suppression
TX DC Offset Compensation Table 1.
Accurate high-speed transmitter power, frequency, carrier suppression
and harmonic measurements can be made with the test set.
The system can enjoy a very low noise floor, low amplitude and phase errors in the balance between I and Q signals, and excellent carrier suppression
and side-band suppression from the simplification of the circuits, compared to the complicated superheterodyne transmitters.
We believe this product will offer equipment manufacturers an outstanding level of performance in terms of linearity, noise and carrier suppression
Over-Temperature Carrier Suppression
Ideal For Base Stations
Figure 6 shows the carrier suppression
as a function of DC offset voltage where the phase quadrature error [beta] of the LO divider is a parameter between 1[degrees] and 10[degrees], and [alpha] = 1[degrees], [delta] = 1 dB and K = 1.