MODULATION (measuring, testing G01R; masers, lasers H01S; modulators specially adapted for use in dc amplifiers H03F 3/38; modulating pulses H03K 7/00; so-called modulators capable only of switching between predetermined states of amplitude, frequency or phase H03K 17/00, H04L; coding, decoding or code conversion, in general H03M; synchronous modulators specially adapted for colour television H04N 9/65)
| Subclass | Title |
|---|---|
| 1/00 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) |
| 1/02 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) Details |
| 1/04 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) Details Means in, or combined with, modulating stage for reducing angle modulation |
| 1/06 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) Details Modifications of modulator to reduce distortion, e.g. by feedback, and clearly applicable to more than one type of modulator |
| 1/08 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of variable impedance element (H03C 1/28-H03C 1/34, H03C 1/46-H03C 1/52, H03C 1/62 take precedence) |
| 1/10 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of variable impedance element (H03C 1/28-H03C 1/34, H03C 1/46-H03C 1/52, H03C 1/62 take precedence) the element being a current-dependent inductor |
| 1/12 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of variable impedance element (H03C 1/28-H03C 1/34, H03C 1/46-H03C 1/52, H03C 1/62 take precedence) the element being a voltage-dependent capacitor |
| 1/14 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of variable impedance element (H03C 1/28-H03C 1/34, H03C 1/46-H03C 1/52, H03C 1/62 take precedence) the element being a diode |
| 1/16 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of discharge device having at least three electrodes (H03C 1/28-H03C 1/34, H03C 1/5, H03C 1/52, H03C 1/62 take precedence) |
| 1/18 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of discharge device having at least three electrodes (H03C 1/28-H03C 1/34, H03C 1/5, H03C 1/52, H03C 1/62 take precedence) carrier applied to control grid |
| 1/20 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of discharge device having at least three electrodes (H03C 1/28-H03C 1/34, H03C 1/5, H03C 1/52, H03C 1/62 take precedence) carrier applied to control grid modulating signal applied to anode |
| 1/22 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of discharge device having at least three electrodes (H03C 1/28-H03C 1/34, H03C 1/5, H03C 1/52, H03C 1/62 take precedence) carrier applied to control grid modulating signal applied to same grid |
| 1/24 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of discharge device having at least three electrodes (H03C 1/28-H03C 1/34, H03C 1/5, H03C 1/52, H03C 1/62 take precedence) carrier applied to control grid modulating signal applied to different grid |
| 1/26 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of discharge device having at least three electrodes (H03C 1/28-H03C 1/34, H03C 1/5, H03C 1/52, H03C 1/62 take precedence) carrier applied to control grid modulating signal applied to cathode |
| 1/28 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of transit-time tube |
| 1/30 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of transit-time tube by means of a magnetron |
| 1/32 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by deflection of electron beam in discharge tube |
| 1/34 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of light-sensitive element |
| 1/36 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of semiconductor device having at least three electrodes (H03C 1/34, H03C 1/5, H03C 1/52, H03C 1/62 take precedence) |
| 1/38 | Amplitude modulation (H03C 5/00, H03C 7/00 take precedence) by means of semiconductor device having at least three electrodes (H03C 1/34, H03C 1/5, H03C 1/52, H03C 1/62 take precedence) carrier applied to base of a transistor |
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