Abstract
In this letter, a <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$K$ </tex-math></inline-formula> -band signal generation phase shifter (SGPS) is implemented using a standard 55-nm complementary metal-oxide semiconductor (CMOS). Its phase shifting is achieved by injecting signal of a voltage-controlled oscillator (VCO) to the other through an injection buffer. Besides continuous phase shift, it can offer a signal source, facilitating multi-phase signal generation in phase array transceivers. Measurement results suggest the prototype implemented in 55-nm CMOS is able to provide a frequency tuning range of 22.5 to 24.8 GHz and minimal output power of 5.2 dBm. It demonstrates a maximal tuning phase of 45.5°.
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