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A LOW COST MILLIMETER WAVE PHASE SHIFTER USING DIELECTRIC INSERTS

IP.com Disclosure Number: IPCOM000009492D
Original Publication Date: 1999-Sep-01
Included in the Prior Art Database: 2002-Aug-28
Document File: 5 page(s) / 206K

Publishing Venue

Motorola

Related People

Authors:
Kenneth V. Buer Dean L. Cook Charles E. Woods

Abstract

In the design of high power solid state microwave amplifiers one common way of achiev- ing higher power is to power combine multiple power amplifier devices. If the RF power from sep- arate solid state power amplifiers is summed in phase, the resulting output power is additive. However, if there is a phase difference in the RF waveform at the amplifier output (which can result from manufacturing tolerances, changes in device parasitics etc.) the resulting output power will be less than the combined total of the individual ampli- fier output powers.