| 1/00 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) |
| 1/02 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) Details |
| 1/04 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) Details Modifications of demodulators to reduce interference by undesired signals |
| 1/06 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) Details Modifications of demodulators to reduce distortion, e.g. by negative feedback |
| 1/08 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by means of non-linear two-pole elements (H03D 1/22, H03D 1/26, H03D 1/28 take precedence) |
| 1/10 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by means of non-linear two-pole elements (H03D 1/22, H03D 1/26, H03D 1/28 take precedence) of diodes |
| 1/12 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by means of non-linear two-pole elements (H03D 1/22, H03D 1/26, H03D 1/28 take precedence) of diodes with provision for equalising ac and dc loads |
| 1/14 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by means of non-linear elements having more than two poles (H03D 1/22, H03D 1/26, H03D 1/28 take precedence) |
| 1/16 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by means of non-linear elements having more than two poles (H03D 1/22, H03D 1/26, H03D 1/28 take precedence) of discharge tubes |
| 1/18 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by means of non-linear elements having more than two poles (H03D 1/22, H03D 1/26, H03D 1/28 take precedence) of semiconductor devices |
| 1/20 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by means of non-linear elements having more than two poles (H03D 1/22, H03D 1/26, H03D 1/28 take precedence) with provision for preventing undesired type of demodulation, e.g. preventing anode detection in a grid detection circuit |
| 1/22 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) Homodyne or synchrodyne circuits |
| 1/24 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) Homodyne or synchrodyne circuits for demodulation of signals wherein one sideband or the carrier has been wholly or partially suppressed |
| 1/26 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by means of transit-time tubes |
| 1/28 | Demodulation of amplitude-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by deflecting an electron beam in a discharge tube (H03D 1/26 takes precedence) |
| 3/00 | Demodulation of angle-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) |
| 3/02 | Demodulation of angle-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by detecting phase difference between two signals obtained from input signal (H03D 3/28-H03D 3/32 take precedence; limiting arrangements H03G 11/00) |
| 3/04 | Demodulation of angle-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by detecting phase difference between two signals obtained from input signal (H03D 3/28-H03D 3/32 take precedence; limiting arrangements H03G 11/00) by counting or integrating cycles of oscillations |
| 3/06 | Demodulation of angle-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by detecting phase difference between two signals obtained from input signal (H03D 3/28-H03D 3/32 take precedence; limiting arrangements H03G 11/00) by combining signals additively or in product demodulators |
| 3/08 | Demodulation of angle-modulated oscillations (H03D 5/00, H03D 9/00, H03D 11/00 take precedence) by detecting phase difference between two signals obtained from input signal (H03D 3/28-H03D 3/32 take precedence; limiting arrangements H03G 11/00) by combining signals additively or in product demodulators by means of diodes, e.g. Foster-Seeley discriminator |