Analysis of NMR Spectrometer Receiver Noise Figure

Table 1

Results of verification.

No.	[MHz]	Preamplifier;	dB]	[dB]	Filter	[samples]	[samples]
1	4.45	broadband-1; 1 dB	4.4	4.42	No	300,000	500,000
2	4.45	broadband-2; 1 dB	4.45	4.42	No	300,000	500,000
3	4.45	broadband-1; 1 dB	1.45	1.37	L-P	300,000	500,000
4	4.45	broadband-2; 1 dB	1.48	1.51	L-P	300,000	500,000
5	4.45	tuned-1; 1 dB	1.34	1.27	No	300,000	500,000
6	4.45	tuned-2; 1 dB	1.53	1.66	No	300,000	500,000
7	4.45	tuned-1; 1 dB	1.36	1.29	L-P	300,000	500,000
8	4.45	tuned-2; 1 dB	1.44	1.48	L-P	300,000	500,000