Patent ID: 9209744
Filing Date: 2015-12-08
Classification: H03B

Abstract:
1. An apparatus comprising: a substrate comprising a plurality of inductors, a plurality of bonding pads and an output port; a first chip comprising a plurality of variable capacitors (i) mounted on an outer surface of said substrate, (ii) connected to said inductors through a plurality of bonds to said bonding pads, (iii) configured to control a frequency of an oscillation of a signal in said inductors and (iv) fabricated in a first semiconductor material, wherein said frequency (a) is varied by an adjustment of a voltage in said first chip and (b) is at least eight gigahertz; and a second chip physically separate from said first chip and comprising a plurality of transistors (i) mounted on said outer surface of said substrate, (ii) configured to generate an output signal that oscillates at said frequency, (iii) configured to excite said signal and (iv) fabricated in a second semiconductor material of a different type than said first semiconductor material, wherein (a) bases of said transistors are coupled to said inductors through said bonds to said bonding pads, (b) collectors of said transistors are directly connected to an electrical power source, (c) emitters of said transistors generate said output signal at said output port, (d) said apparatus forms a voltage-controlled oscillator and (e) said output signal has a single-sideband phase noise at 100 kilohertz of no greater than −100 decibels relative to said frequency per hertz.