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MIL-T-48621A (AR)
3.2.1.3 RF detector/MIA (1A1A2). The RF Detector/MIA includes
the cavity, input and output waveguides, and a microwave integrated
assembly, consisting of the noise detector diodes, the phase
shifter, the balance network, and couplers, all connected with
stripline. Al1 dimensions and specifications shall conform to
Drawing 11822702.
3.2.1.4 Low noise amplifier(lAlA3). The Low Noise Amplifier
is a three-stage amplifier with approx imately 5O dB gain, with low
noise characteristics that operates over the range of 600 Hz to
2 MHZ. All dimensions and specifications shall conform to Drawing
11822704.
3.2.1.5 Post amplifier and RMS detector (lAlA4). . The Post
Amplifier is single stage video amplifier that drive
`rčqhehd that
the RMS
Detector which converts the AC signal to a DC level and, through
another stage of amplification, drives the meter. All dimensions
and specifications shall conform to Drawing 11822705.
3.2.1.6 Low pass filter - 2MHz (lAlA5]. The Low Pass Filter -
ter with a cutoff of 2 MHz in series
2 MHz is a passive low pass
With 750 KHz High Pass Filter (lAlA6), thus forming the Band 3
bandpass filter. All dimensions and specifications shall conform to
Drawing 11822706.
3.2.1.7 High PaSS filter - 750 KHZ (lAlA6). The High Pass
Filter - 750 KHz is a passive high pass
ter with a cutoff of 750
KHz. which in combination with 1A1A5 forms the Band 3 bandpass
filter. All dimensions and specifications shall conform to Drawing
11822700.
3.2.1.8 High Pass filter - 2500 Hz (1A1A7). The High Pass
Filter - 2500 Hz is an active high pass filter with a cutoff of 2500
Hz, which in combination with the Low Pass Filter - 750 KHz (1A1A9)
forms the Band 2 bandpass filter. All dimensions and specifications
shall conform to Drawing 11822709.
3.2.1.9 High Pass filter - 600 Hz (1AlA8). The High Pass
Filter - 600 Hz is an active high pass filter with a cutoff of 600
Hz, which in combination with the Low Pass Filter - 2500 Hz (1A1A1O)
forms the Band 1 bandpass filter. All dimensions and specifications
shall conform to Drawing 11822711.
3.2.1.10 Low Pass filter - 750 KHz (1A1A9). The Low Pass
Filter - 750 KHz iS a passive low pass filter with a cutoff of 750
KHZ, which in combination with 1A1A7 forms the Band 2 bandpass
filter. All dimensions and specifications shall conform to Drawing
11822713.
3.2.1.11 LOW Pass filter - 2500 Hz (1A1A1O). The Low Pass
Filter - 2500 Hz is an active low pass filter with a cutoff of 2500
Hz, which in combination with lAlA8 forms the Band 1 bandpass
filter. All dimensions and specifications shall conform to Drawing
11822738.
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