Skip to main content
. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: IEEE Trans Med Imaging. 2010 Oct 18;30(2):512–522. doi: 10.1109/TMI.2010.2087768

Table I.

Gain and Max In/Out of the Loop Main Components

Component Gain [dB] Max Input [dBm] Max Output [dBm]
Polyphase Amp. 36(1) - - 13.5
Up-Mixer −32 to −2 +4 +0(2)
Down-Mixer −5 to +24 +7(3) +4
BP Filter −3 - - - -
Power Amp. +60 - - +53
Coupler −40 to −20 - - - -
Combiner −3 - - - -
Pad −40 to −10 - - - -

Gain, maximum input, and maximum output values of the main components of the frequency-offset Cartesian feedback system shown in Fig. 6. The limited input/output power capabilities of the mixers made high values of feedback attenuation necessary, which was obtained with the use of pads in series with the coupler. Notes:

(1)

Peak gain at the center of the control bandwidth;

(2)

Includes the on-board filters for matching and D-to-S conversion;

(3)

Valid at minimum available gain (−5 dB). Typical operating settings: gain 0±3 dB, maximum input +2±3 dBm.