A high frequency or microwave microcircuit device is disclosed having application as an integrated circuit element for electromagnetic signal frequency conversion performing, for example, frequency conversion functions such as signal mixing or signal detection. The novel microcircuit element is particularly adapted for use in planar integrated microstrip transmission line systems.
A high current interconnection is provided in a microcircuit package comprising first and second contacts each bonded to a substrate mounted in a package interconnected by a high current wire. The contacts are discrete pads of beryllium oxide and the high current wire is formed of Nichrome which is welded at its ends to a conductive surface layer provided on each pad. The wire is bowed away from the substrate for thermal stress relief.
The invention is a novel noise reference generator for use in amplitude comparison radiometric systems for the purpose of rapid precision control of the over-all gain of the radiometer receiver. The reference generator operates by cyclic modulation of the temperature of a unique planar thin film microresistor which may be disposed in a constant temperature environment. A strip transmission circuit provides a common path for the microresistor heater currrent and for the generated noise signals, along with means for separating these currents.
A frequency converting or mixing device for a receiver, particularly employing hollow conductor or micro strip techniques, including signal and oscillator input means, a diode as a non-linear element, an intermediate frequency output and two stub circuits at the signal input side of the diode, at a mutual distance of approximately one-fourth signal input wave length, for effecting a blocking of currents, of the second harmonic of the oscillator frequency and the summation frequency of the signal input frequency and oscillator frequency, at the diode.
The invention provides a coupling device between a metal wave guide (three dimensional system) and an electronic signal processing circuit (two dimensional system). The transition is provided by means of a dielectric wave guide introduced longitudinally into the metal wave guide. A chamfer cut in the dielectric guide concentrates the energy of the input signal on a face of the dielectric bar, at the interface with another dielectric material (isolated image guide). At this interface, a microstrip line transmits the energy to a semiconductor component.
