POWER OSCILLATOR APPARATUS WITH TRANSFORMER-BASED POWER COMBINING

摘要

An oscillator circuit includes first and second oscillators arranged in a series configuration between a supply voltage node and a reference voltage node. The first and second oscillators are configured to receive a synchronizing signal for controlling synchronization in frequency and phase. An electromagnetic network provided to couple the first and the second oscillators includes a transformer with a primary circuit and a secondary circuit. The primary circuit includes a first portion coupled to the first oscillator and second portion coupled to the second oscillator. The first and second portions are connected by a circuit element for reuse of current between the first and second oscillators. The oscillator circuit is fabricated as an integrated circuit device wherein the electromagnetic network is formed in metallization layers of the device. The secondary circuit generates an output power combining power provided from the first and second portions of the primary circuit.

主权项

1. An apparatus, comprising:
a first power oscillator and a second power oscillator arranged in series between a supply voltage and a reference voltage, an electromagnetic network configured to couple the first and the second oscillator, said electromagnetic network comprising a transformer with a primary circuit including a first portion connected to the first oscillator and second portion connected to the second oscillator, a circuit element configured to reuse current used in the first oscillator even into the second oscillator, an output stage comprising a secondary circuit of the transformer, wherein the first and the second oscillator are configured to receive a synchronizing signal for synchronization of frequency and phase, and wherein said secondary circuit is magnetically coupled with the first and the second portion of the primary circuit to obtain an output power as combination of a first power associated to the first portion and a second power associated to the second portion of the primary circuit.