IAFM models produce no more additional noise
than passive multipliers. In fact, our multiplied output
noise can be predicted using the same formula: Noise
of driver source +20Lg(N) dB/Hz.
example, if a 7 GHz driver source produces a noise
level of -120dB/Hz at 10 kHz offset from the carrier,
the 20X IAFM multiplier it drives will produce
a noise level at the 140 GHz output of -120dB/Hz+20Lg(20),
or -94 dB/Hz, at 10 kHz offset. ...ELVA-1's IAFM
multipliers are designed for high reliability and
excellent performance under harsh operating conditions.
Operating temperature range is specified at -50 to
+70 C, and MTBF is approximately 50,000 hours. These
units may be obtained with built-in fast output power
switching, with an on-off switching time of 1 ns.
The following options and IAFM-based subsystems
are also available: Complete, very stable solid-state
millimeter wave source, consisting of the following
DRO-stabilized transistor oscillator, 6-8 GHz, 10
mW output, 10-6 frequency stability.
Higher stability can be provided upon request.
Solid-state power amplifier, supplying a 6-8 GHz
output, at a power level sufficient for normal operation
of the IAFM.
adjustment accuracy of this source is about 5-50 MHz.
Adjustment parameters are customized to customer requirements.
Millimeter wave sweeper, based on a Varactor Controlled
Oscillator (6-8 GHz, 10 mW), instead of the DRO oscillator.
Additional elements 2 and 3 from above complete the
subsystem. Typical bandwidth is 0.5-1%. Frequency bandwidth
could be increased upon request. Since this is limited
by the distance between nearest harmonics, it is impossible
to achieve a greater output bandwidth than the frequency
of the driver source. The real bandwidth would be about
50-80% of the driver frequency. For example, the unit
we supplied for the Correlation Reflectometer at JET
(Joint European Torus) provided a frequency sweep of
Injection-Locked Amplifiers (our IILA series)
to increase output power.
or amplitude modulator, based on our fast PIN switch,
FPS series. Amplitude regulator, based on our
Voltage Controlled Attenuator, VCVA
series. AC-DC Power supply for 110 VAC, 60Hz or 220
VAC, 50 Hz.