Abstract: Printed antenna devices are provided, which can operate at RF and microwave frequencies, for example, while simultaneously providing antenna performance characteristics such as high gain/directivity/radiation efficiency, high bandwidth, hemispherical radiation patterns, impedance, etc., that render the antennas suitable for voice communication, data communication or radar applications, for example. Further, apparatus are provided for integrally packaging such printed antenna devices with IC (integrated circuit) chips (e.g., transceiver) to construct IC packages for, e.g., wireless communications applications.

Abstract: Apparatus and methods are provided for integrally packaging semiconductor IC (integrated circuit) chips and antenna devices which are integrally constructed from package frame structures (e.g., lead frame, package carrier, package core, etc.), to thereby form compact integrated radio/wireless communications systems for millimeter wave applications.

Abstract: An ultra-broadband balun is provided. The balun comprises: a first unbalanced transmission line comprising a first ground trace and a signal trace; and a balanced transmission line comprising a first and second signal trace, wherein the first signal trace of the balanced transmission line is connected to the first ground trace of the first unbalanced transmission line and the second signal trace of the balanced transmission line is connected to the signal trace of the first unbalanced transmission line, wherein a first capacitor is disposed in series with one of the first ground trace of the first unbalanced transmission line and the first signal trace of the balanced transmission line.

Abstract: A direct current (DC) isolated phase inverter and a ring hybrid coupler including the DC isolated phase inverter is provided. The ring hybrid coupler including the DC isolated phase inverter comprising: a first, second, third and fourth transmission line arm; a first port connected to the first arm, second port connected to the second arm, third port connected to the third arm and fourth port connected to the fourth arm; and a DC phase inverter inserted within one of the first, second, third and fourth arms, wherein the DC phase inverter comprises: a transmission line comprising a plurality of signal and ground traces, wherein the plurality of signal and ground traces are interchanged; and a plurality of capacitors disposed in series with the ground traces, wherein the plurality of capacitors isolate the DC phase inverter from a device connected to the transmission line.

Abstract: Antennas are provided which are constructed using one or more wires as radiating elements attached to a substrate or chip, wherein wire bonding methods can be used to attach and form loop profiles for the wires. The antennas can be integrally packaged with IC chips (e.g., IC transceivers, receivers, transmitters, etc.) to build integrated wireless or RF (radio frequency) communications systems.

Abstract: Printed antenna devices are provided, which can operate at RF and microwave frequencies, for example, while simultaneously providing antenna performance characteristics such as high gain/directivity/radiation efficiency, high bandwidth, hemispherical radiation patterns, impedance, etc., that render the antennas suitable for voice communication, data communication or radar applications, for example. Further, apparatus are provided for integrally packaging such printed antenna devices with IC (integrated circuit) chips (e.g., transceiver) to construct IC packages for, e.g., wireless communications applications.

Abstract: A device for the DC-decoupled connection of a telephone line to a signal processing device at the subscriber end of the telephone line is disclosed. The device exhibits a first circuit which is connected to the telephone line, a second circuit which is connected to the signal processing device, and a transformer which exhibits a first and a second winding, the first winding being connected to the first circuit and the second winding being connected to the second circuit and the first and second winding being DC-decoupled from one another. The device is characterized by the fact that the first circuit exhibits a hybrid circuit for separating the signals of the telephone line into a first signal path which extends from the telephone line to the signal processing device, and into a second signal path which extends from the signal processing device to the telephone line.

Abstract: Antennas are provided which are constructed using one or more conductive via stubs as radiating elements formed in a substrate. The antennas can be integrally packaged with IC chips (e.g., IC transceivers, receivers, transmitters, etc.) to build integrated wireless or RF (radio frequency) communications systems.

Abstract: An off-chip signal is provided to a differential branch-line directional coupler implemented entirely on-chip. The coupler produces differential quadrature signals, which are then buffered and applied to a quadrature mixer. The coupler is implemented entirely on-chip using microstrip transmission lines. The coupler is made up of a plurality of rings and a plurality of underpasses connecting ports of the rings, wherein each of the plurality of rings is made up of four branch lines, and each branch line having an electrical length of one-quarter wavelength at the center design frequency. Coupling between the plurality of branch lines of the rings may be varied.