An RF Voltage Detector with Low Harmonic Feedback for Antenna Tuning Switches

Oezdamar, Oguzhan; Hagelauer, Amelie; Weigel, Robert; Solomko, Valentyn

doi:10.1109/comcas44984.2019.8958276

Cited by 9 publications

(2 citation statements)

References 5 publications

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“…3 shows a circuit diagram of the designed chip including the parameters of used components. The description of technology and examples of switch designs can be found in literature, e.g [4], [5] and [6]. The IC consists of two switches S1, S2, a 2-bit C-tuner implemented with the switches S3 and S4 as well as the voltage detectors VD1 and VD2 coupled to the RF pins.…”

Section: A Rf Switchesmentioning

confidence: 99%

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An Integrated Circuit for Decoupling and Tuning of Inverted-F Antennas in Cellular User Equipment

Oezdamar

Weigel

Hagelauer

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

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An integrated circuit (IC) for decoupling of multiple-input multiple-output (MIMO) antennas as well as for aperture and impedance tuning is demonstrated in this paper. The IC decouples the adjacent stripes of the inverted-F antenna (IFA) forming the two separate IFAs for MIMO operation in middle-and high-cellular frequency bands. For low-band operation the IC joins the stripes, forming a single IFA with double the physical length. The same IC is also used for impedance and aperture tuning of the antennas. The IC is designed and fabricated in dedicated 130 nm RF switch technology. The design and measurement results are presented in the paper.

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Section: A Rf Switchesmentioning

confidence: 99%

“…The RF voltage at the point where the IC is placed can be sensed by the voltage detectors VD 1 and VD 2 at the RF pins of the IC [6].…”

Section: B C-tuner and Voltage Detectormentioning

confidence: 99%