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| Number | Title | Issue Date |
| 4028641 | Linear phase modulator including a pair of Armstrong modulators The present invention relates to a linear phase modulator comprising two known Armstrong modulators connected in a balanced configuration to eliminate even-order nonlinearities in the output phase modulated signal. In addition, a preselected amount of in-... | 06/07/1977 |
| 4004255 | Microwave frequency phase modulator Phase modulator enabling the ratio of parasitic waves to be reduced and the precision on the phase shift to be increased, comprising two microwave frequency diodes connected to voltage supplies such that the diodes are each rendered conductive or blocked ... | 01/18/1977 |
| 3996532 | Phase modulating with odd and even finite power series of a modulating signal Method and apparatus for producing a phase-modulated waveform having a high degree of linearity between the modulating signal and the phase of the modulated carrier signal. Two signals representing finite odd and even power series transformations of the m... | 12/07/1976 |
| 3969617 | Multichannel digital modulator In a modulator of the type including a memory in which coded binary words representative of samples of a cycle of a sinusoidal signal are stored, which coded words are used to synthesize the modulated signal, the bits of each input digital signal Si | 07/13/1976 |
| 3961286 | Reflection type phase modulator having reduced temperature sensitivity and reduced distortion An improved reflection type phase modulator having reduced temperature sensitivity and reduced distortion includes two three-port circulators coupled to form a four-port circulator. A first port is connected to a first phase modulator and a second port is... | 06/01/1976 |
| 3949324 | Surface wave device angle modulator A system for generating angular modulation comprising a balanced modulator and an adding circuit to which a surface wave device quadrature oscillator applies two signals at the carrier frequency differing 90° in phase, such phase difference being accurat... | 04/06/1976 |
