Analysis and Implementation of High-<i>Q</i> CT Inductor for Compact and Wide- Tuning Range <i>Ku</i>-Band VCO

Mansour, Islam; Aboualalaa, Mohamed; Barakat, Adel; Allam, Ahmed; Abdel‐Rahman, Adel B.; Abo‐Zahhad, Mohammed; Pokharel, Ramesh K.

doi:10.1109/lmwc.2020.3004753

Cited by 16 publications

(2 citation statements)

References 21 publications

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“…The achieved performance, along with a comparison with the state-of-the-art quadcore solutions, is reported in Table 3. The expressions of the figures of merit (FoMs) used for the comparison are the following [20][21][22]35]:…”

Section: Quad-core Vco Design Based On An Interstacked Transformermentioning

confidence: 99%

Interstacked Transformer Quad-Core VCOs

Tripoli,

Maiellaro,

Pavone

et al. 2024

Electronics

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This paper presents for the first time a quad-core oscillator based on a very compact interstacked transformer that tightly couples the four cores without oscillation mode ambiguity thanks to its strong magnetic coupling factor. As a proof of concept, a 19.125 GHz oscillator for a narrowband 77 GHz radar system was designed in 28 nm fully depleted silicon-on-insulator CMOS technology with a general purpose back-end-of-line. The soundness of the proposed quad-core oscillator topology is demonstrated by comparison with state-of-the-art quad-core solutions, highlighting a significant advantage in terms of area occupation and power consumption. The proposed topology can be profitably exploited in several RF/mm-wave applications, such as radar and wireless communication systems.

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Section: Quad-core Vco Design Based On An Interstacked Transformermentioning

confidence: 99%

Interstacked Transformer Quad-Core VCOs

Tripoli,

Maiellaro,

Pavone

et al. 2024

Electronics

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show abstract

“…Chirala and Nguyen 1 Yang and Chen 8 Jahan et al 12 Mansour et al 13 Amin et al maintains a low power consumption of 2.2 mW while oscillating at Ku-band. The VCO has good FoM at low power consumption, a compact core area, better phase noise, and good harmonic suppression of 29.4 dB.…”

Section: Refmentioning

confidence: 99%

Compact and low phase noise LC‐VCO design using novel V‐shaped inductor in 0.18‐μm CMOS technology for Ku‐band applications

Taha

Mansour

Allam

et al. 2023

Circuit Theory & Apps

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SummaryAn innovative, high‐quality factor, and small‐area V‐shaped inductor is presented in this article to improve the performance of voltage‐controlled oscillators (VCOs). The differential inductance of the suggested V‐shaped inductor in the resonator and the buffer is 280 pH and 630 pH, respectively. The inductor area is compacted by 42% and 76% compared to the conventional inductor with the same inductance value. Using 0.18‐ CMOS technology, the proposed V‐shaped inductor is employed to design a compact VCO operating at Ku‐band. The proposed VCO has a simulated phase noise range of −114 to −114.6 dBc/Hz, which is relatively constant. Also, its simulated frequency tuning range (FTR) is 5.6 % from 14.03 to 14.74 GHz. The power consumption is 2.2 mW. The simulated figure of merit (FoM) ranges from −193.5 to −194.2 dBc/Hz, which is enhanced by 6%. The designed VCO core area is 0.034 mm2, which is compacted by 35% compared to using a conventional spiral inductor. The achieved area‐included figure of merit ( ) is −208.7 dBc/Hz. The VCO has an output power of −6.8 dBm and a good harmonic suppression of 29.4 dB between the fundamental and the second harmonic.

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166% frequency tuning range power VCO using high-quality off-chip inductor

Mansour

2023

Analog Integr Circ Sig Process

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This work presents a complementary PMOS NMOS voltage-controlled power oscillator (VCO) based on a high quality (Q) factor off-chip inductor in 130 nm CMOS process. The proposed VCO achieves a frequency tuning range of 166% from 393 MHz to 4.17 GHz and this wide tuning range is divided into six bands where each band is also sub-divided into three bands using a single switching voltage. The proposed design takes into consideration the effect of the bond wire that is used to connect the off-chip inductor with the VCO core moreover, the measured SNP files of the off-chip inductors are utilized to ensure accurate results. This technique improves the figure of merit (FoM) by 4–25 dB compared to the conventional inductor VCO. Using six different values of the off-chip inductors, the proposed VCO works in six bands with a tuning range of 166%, and a minimum phase noise of − 127 dBc/Hz @ 1 MHz offset frequency 2.2 GHz carrier. Furthermore, the proposed VCO draws 1.37 mA from 1.1 V supply voltage and has a minimum achieved Figure-of-Merit (FOM) equal to -193 dBc/Hz with a maximum output power of 4.25 dBm. The VCO core area equals 0.07 $${\mathrm{mm}}^{2}$$ mm 2 , while the total chip area including RF pads and output buffers is $${0.437\mathrm{ mm}}^{2}$$ 0.437 mm 2 .

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Analysis and Implementation of High-Q CT Inductor for Compact and Wide- Tuning Range Ku-Band VCO

Cited by 16 publications

References 21 publications

Interstacked Transformer Quad-Core VCOs

Interstacked Transformer Quad-Core VCOs

Compact and low phase noise LC‐VCO design using novel V‐shaped inductor in 0.18‐μm CMOS technology for Ku‐band applications

166% frequency tuning range power VCO using high-quality off-chip inductor

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