RF signal generator
First Claim
Patent Images
1. In a signal generator for generating modulated RF signals available for testing key parameters of receivers the combination comprising:
- (a) signal generating means for generating an output signal of a predetermined frequency;
(b) pulse generating means coupled to said signal generating means for generating spike output pulses at said predetermined frequency;
(c) balanced mixer modulator circuit means coupled to said pulse generator means;
(d) a source of amplitude modulating signal means coupled to said modulator circuit means for modulating said narrow pulses to provide a plurality of RF signals at the output of said modulator circuit means.
0 Assignments
0 Petitions
Accused Products
Abstract
An RF test signal generator including a driving oscillator, a pulse generr for generating narrow spikes at the oscillator frequency (such as a step recovery diode), a modulator and an attenuator. Since the very narrow pulse exhibits nearly constant amplitude in the frequency domain, a constant amplitude comb spectrum with frequency spacing at the oscillator frequency is generated so as to facilitate automated testing techniques.
-
Citations
5 Claims
-
1. In a signal generator for generating modulated RF signals available for testing key parameters of receivers the combination comprising:
-
(a) signal generating means for generating an output signal of a predetermined frequency; (b) pulse generating means coupled to said signal generating means for generating spike output pulses at said predetermined frequency; (c) balanced mixer modulator circuit means coupled to said pulse generator means; (d) a source of amplitude modulating signal means coupled to said modulator circuit means for modulating said narrow pulses to provide a plurality of RF signals at the output of said modulator circuit means. - View Dependent Claims (2, 3, 4, 5)
-
Specification