robismyname
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mixer tuning
Thanks to my ignorance, im trying to work through three issues I have with a mixer.
(1)
Analog Devices datasheet (page 18 of 24) for mixer (ADL5350) suggest that I tune the LO port input network for optimum return loss. Can I do this without a smith chart? How is this done without a smith chart?
(2)
Also the datasheet (page 18 of 24) suggest a simple LC bandpass filter with illustration on page 17 of 24, figure 58. In table 8 (page 18 of 24) Analog Devices was nice enought to provide appropriate L and C values for LO,RF, IF frequencies. Considering only the LO, my LO frequency range is 2260Mhz to 2343MHz which is not on the list. Is it safe to exptrapolate. Should L3 be 3.3nH,3.4nH, neither?
(3)
Back to page 18 of 24 of the data sheet. Top left hand column. First they mention an illustration of a LC bandpass filter in figure 58. Then 4-5 lines down they say its forms a Low Pass filter. So is it a BP or LP?
Seeking to understand..........
Thanks to my ignorance, im trying to work through three issues I have with a mixer.
(1)
Analog Devices datasheet (page 18 of 24) for mixer (ADL5350) suggest that I tune the LO port input network for optimum return loss. Can I do this without a smith chart? How is this done without a smith chart?
(2)
Also the datasheet (page 18 of 24) suggest a simple LC bandpass filter with illustration on page 17 of 24, figure 58. In table 8 (page 18 of 24) Analog Devices was nice enought to provide appropriate L and C values for LO,RF, IF frequencies. Considering only the LO, my LO frequency range is 2260Mhz to 2343MHz which is not on the list. Is it safe to exptrapolate. Should L3 be 3.3nH,3.4nH, neither?
(3)
Back to page 18 of 24 of the data sheet. Top left hand column. First they mention an illustration of a LC bandpass filter in figure 58. Then 4-5 lines down they say its forms a Low Pass filter. So is it a BP or LP?
Seeking to understand..........