Phased shifted oscilator and antenna

An oscillator for shifting the phase of an input reference signal, comprising:

• a power divider having a first output and a second output;
• a time delay unit having an input and an output, wherein its input is connected to said second output of said power driver;
• a band rejection filter having a first signal input, a second signal input a first output and a second output, wherein its first signal input is connected to said time delay unit and its second signal input is connected to said power divider first output;
• at least two reflection amplifiers, each having one input and one output, wherein one of said at least two reflection amplifiers input is connected to said first output of said band rejection filter and the other reflection amplifiers input is connected to said second output of said band rejection filter;
• and
• a power combiner having two inputs connected to said two reflection amplifiers outputs.

A phased shifted injection locked push-push oscillator comprising:

• (a) a power divider operative to divide a received reference signal into a first portion and into a second portion, the second portion is time delayed by a predetermined amount of delay time, relative to the first portion;
• and
• (b) a push-push oscillator receiving the first and second portions and generating an output signal;
• wherein the push-push oscillator comprises a band rejection filter adapted to selectively change the phase of said output signal resulting in an output signal having a controlled phase shifted relative to the phase of the reference signal.

A method for phase shifting an injection locked push-push oscillator, comprising:

• (a) dividing a received input reference signal into a first portion and into a second portion, the second portion is time delayed by a predetermined amount of delay time, relative to the first portion;
• and
• (b) receiving the first and second portions by a push-push oscillator;
• and
• (c) generating an output signal by the push-push oscillator;
• wherein the push-push oscillator is adapted to selectively change the phase of the first or second portions resulting in an output signal having a controlled phase shifted relative to the phase of said input reference signal.

A method for phase shifting an injection locked push-push oscillator, comprising:

• receiving a first signal having a phase;
• dividing the first signal and injecting a first portion of the first signal into a band rejection filter and a second portion of the first signal into a time delay unit;
• selectively changing the resonant frequency of the first or second portion of the first signal;
• oscillating the first portion and the second portion of the first signal between the band rejection filter and at least two reflection amplifiers;
• combining the first and second portions of the first signal from the at least two reflection amplifiers;
• and
• outputting the combined signal.

A phased array antenna having a steer-able antenna beam in azimuth and elevation, the antenna comprising:

• a plurality of radiators, amplifiers, mixers, sampling couplers and phase shifter injection locked push-push oscillators, said phase shifter injection locked push-push oscillators are used for steering the antenna beam in the elevation and azimuth direction, wherein each of the phased shifted injection locked push-push oscillators comprise:
• (a) a power divider operative to divide a received reference signal into a first portion and into a second portion, the second portion is time delayed by a predetermined amount of delay time, relative to the first portion;
• and
• (b) a push-push oscillator receiving the first and second portions and generating an output signal;
• wherein the push-push oscillator comprises a band rejection filter adapted to selectively change the phase of the first or second portions resulting in an output signal having a phase shifted relative to the phase of the reference signal.