The LNA 6901 is a low noise amplifier with typ. 28 dB of gain
covering the nominal frequency range 9 kHz to 1 GHz and can be used up to 2 GHz.
With its high gain and low noise figure, it will significantly increase the
sensitivity of virtually all spectrum analyzers and other RF measuring
instruments. All measuring instruments have a noise figure , which is a
measure of how good the instrument is at measuring low level signals, the lower
this figure, the better, although the lowest signal level will still be governed
by the measurement bandwidth. A typical spectrum analyzer may have a noise
figure of 20 dB or more, whereas a typical receiver may have a noise figure of
10 dB. The preamplifier has a noise figure of typical 2.8 dB, significantly
enhancing the low level performance of such instruments, enabling signals that
were previously masked by noise to be seen.
The low noise amplifier can be connected directly to the RF
input (N) of the spectrum analyzer or EMI-receiver. If the LNA 6901 is used with
the Teseq receiver SCR 35xx / SMR 45xx, the power supply is provided directly by
the receiver via the cable LE 237. Alternatively the power supply unit PSU 6000
can be used.
