Scanning mixed base receiver

Claim 3

In a system for measuring, means for converting a frequency into a first time position within a time interval of first extent, wherein said first time position is a function of said frequency, means for converting said frequency value into a time position within a second time interval of second extent, wherein said second time position is a function of said frequency, and means for indicating the value of said frequency as a difference of said time positions.

Claim 4

In a system for measuring, means for converting a frequency into a first time position within a time interval of first extent, wherein said first time position is a function of said frequency, means for converting said frequency value into a time position within a second time interval of second extent, wherein said second time position is a function of said frequency, and means for indicating the value of said frequency as a difference of said time positions.

Claim 5

In a spectrum analyzer, a source of victim signal within a surveillance band, a first mixer, a second mixer, a first harmonic local oscillator, a second harmonic local oscillator, a first intermediate frequency amplifier coupled to said first mixer, a second intermediate frequency amplifier coupled to said second mixer, said first harmonic local oscillator having a first frequency spacing between harmonic frequencies, said second harmonic local oscillator having a different frequency spacing between harmonic frequencies, means for applying said victim signal to said first and second mixers, means for coupling said first harmonic local oscillator to said first mixer, means for coupling said second harmonic local oscillator to said second mixer, said first harmonic local oscillator providing n oscillations of frequencies F1, F2 . . . Fn, extending over said surveillance band, said second harmonic local oscillator providing m oscillations of frequencies Fa, Fb . . . Fm extending over said surveillance band, m and n being relatively prime integers and means for so scanning said first local oscillator over a band equal to F2 - F1 and said second local oscillator over a band Fb - Fa that said scans occupy equal times.

Claim 6

In a spectrum analyzer, a source of victim signal within a surveillance band, a first mixer, a second mixer, a first harmonic local oscillator, a second harmonic local oscillator, a first intermediate frequency amplifier coupled to said first mixer, a second intermediate frequency amplifier coupled to said second mixer, said first harmonic local oscillator having a first frequency spacing between harmonic frequencies, said second harmonic local oscillator having a different frequency spacing between harmonic frequencies, means for applying said victim signal to said first and second mixers, means for coupling said first harmonic local oscillator to said first mixer, means for coupling said second harmonic local oscillator to said second mixer, said first harmonic local oscillator providing n oscillations of frequencies F1, F2 . . . Fn, extending over said surveillance band, said second harmonic local oscillator providing m oscillations of frequencies Fa, Fb . . . Fm extending over said surveillance band, m and n being relatively prime integers and means for so scanning said first local oscillator over a band equal to F2 - F1 and said second local oscillator over a band Fb - Fa that said scans occupy equal times.

Claim 7

The combination according to claim 3, wherein is further provided means for measuring the time elapse between capture of said victim signal by said first and second intermediate frequency amplifiers.

Claim 8

The combination according to claim 4, wherein is further provided means for measuring the time elapse between start of a scan and capture of said victim signal.

Claim 11

In a frequency analyzer for measuring a victim frequency, a source of first harmonically relaTed oscillations of frequency separation Fx, a source of second harmonically related oscillations of frequency separation Fy, where Fx not = Fy, means for simultaneously scanning said first harmonically related oscillations each over a frequency band of extent Fx, means for simultaneously scanning said second harmonically related oscillations each over a frequency band of extent Fy, means for completing all said scans in a time T, and means for detecting occurrence of a predetermined frequency relation between said victim frequency and the frequencies of one of each of said first and second harmonically related oscillations in the course of said scan.

Claim 12

In a frequency analyzer for measuring a victim frequency, a source of first harmonically relaTed oscillations of frequency separation Fx, a source of second harmonically related oscillations of frequency separation Fy, where Fx not = Fy, means for simultaneously scanning said first harmonically related oscillations each over a frequency band of extent Fx, means for simultaneously scanning said second harmonically related oscillations each over a frequency band of extent Fy, means for completing all said scans in a time T, and means for detecting occurrence of a predetermined frequency relation between said victim frequency and the frequencies of one of each of said first and second harmonically related oscillations in the course of said scan.

Claim 13

The combination according to claim 7, wherein said frequency relation is equality.

Claim 14

The combination according to claim 7, wherein the ratio of (Fx/Fy) is a rational number.

Claim 15

The combination according to claim 7, wherein the surveillance band is f2 - f1, and where (f2-f1/Fx), and (f2-f1/fy) are both integers, and wherein said integers are relatively prime.

Claim 16

The combination according to claim 10, wherein (f2-f1/Fx) 1 (f2-f1/Fy).

Claim 17

In a system for measuring a victim frequency fo within a surveillance band f2 - f1, means for generating first frequencies over said surveillance band with spacings (f2-f1/Fx) and further frequencies over said surveillance band with spacings (f2-f1/Fy), where Fx not = Fy, means for scanning said first frequencies each over a band of extent Fx and said further frequencies each over a band of extent Fy, and means for measuring the capture times of said victim frequency fo by at least one of said first frequencies and by at least one of said further frequencies.

Claim 18

In a system for measuring a victim frequency fo within a surveillance band f2 - f1, means for generating first frequencies over said surveillance band with spacings (f2-f1/Fx) and further frequencies over said surveillance band with spacings (f2-f1/Fy), where Fx not = Fy, means for scanning said first frequencies each over a band of extent Fx and said further frequencies each over a band of extent Fy, and means for measuring the capture times of said victim frequency fo by at least one of said first frequencies and by at least one of said further frequencies.