Abstract
Wireless systems are in a growing need for compact size phased antenna arrays, hence, compact phase shifters, as well. 1n addition, there are other numerous applications like isolators, filters, and couplers that deploy the phase shifter as an essential component. To implement the phase shifter in a compact size, the Substrate 1ntegrated Waveguide (SIW) structure is selected. SIW technology has almost all the properties of rectangular waveguides. However, it keeps the advantage of the compactness and integration capability. The mode supported by SIW structures is the TE 10 . This work introduces ferrite phase shifter with compact size compared to the traditional ferrite phase shifters that are bulky. The proposed non-reciprocal 90° phase shifter is based on SIW technology with less than ±15° of phase variations over the Ku-band.
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