Single-chip quadrature hybrid coupler tube core and balanced power amplifier module

Abstract

The invention discloses a single-chip quadrature hybrid coupler tube core and a balanced power amplifier module. The single-chip quadrature hybrid coupler tube core comprises an integrated passive device IPD in an advanced semiconductor processing technology and one or more on-chip inductors and on-chip capacitors, wherein the IPD structure at least comprises a substrate, at least two layers of metal wiring stacked on the substrate, dielectric layers between the metal wiring and via holes connecting metal; and the on-chip inductors and the on-chip capacitors are placed on the same IPD substrate, surface mount inductors, surface mount capacitors and extra device assembling space are not needed. The balanced power amplifier module comprises input, output, a driving amplifier, a power amplifier and an isolation resistor, all devices are integrated on the same module, and both the input and the output adopt the above single-chip quadrature hybrid coupler tube cores. Thus, the size is compact, the manufacturing cost is low, and the in-band loss is small.

Description

technical field [0001] The invention belongs to the technical field of wireless communication systems and relates to radio frequency integrated circuits, in particular to a single-chip orthogonal hybrid coupler core and a balanced power amplifier module. Background technique [0002] In the radio frequency front-end of the wireless communication system, balanced circuit architectures such as balanced amplifiers and balanced mixers are often used. The input and output of a balanced circuit usually require a quadrature hybrid coupler to achieve a perfect match between the input port impedance and the output port impedance. [0003] A traditional quadrature hybrid coupler (Quadrature Hybrid Coupler, referred to as Hybrid in the present invention) is mostly implemented by a quarter-wavelength microstrip transmission line. When this solution is implemented in the microwave frequency band, there is a problem that it is difficult to be integrated in the radio frequency front-end m...

AI Technical Summary

Problems solved by technology

If a design such as figure 1 The circuit shown (for example, the working frequency band is 2GHz), taking the imperial 0402 device design as an example, the area occupied by the device itself plus the assembly space required by the device totals about 5mm 2 ;Taking the imperial 0201 device design as an example, the area occupied by the device itself plus the assembly space required for the device totals about 3mm 2 ; The Hybrid made in this way has low integration, large size and high manufacturing cost

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