K-band balun with slot pattern ground for wide operation using 0.18 [micro sign]m CMOS technology

Yu, Han‐Yeol; Choi, Seung Tae; Kim, S.-H.; Kim, Y.-H.

doi:10.1049/el:20070092

Cited by 13 publications

(13 citation statements)

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“…The [S] matrix of the Comp. line is given by (5) By combining the three parts in terms of Section I, Comp. line and Section II together, we have…”

Section: A Traditional Asymmetric Marchand Balunmentioning

confidence: 99%

“…The Marchandtype balun, which is well-known for easy realization and wide bandwidth, is normally a preferred choice. Due to a tight coupling characteristic, the silicon-based 3-D baluns [1]- [4] feature wider bandwidth than their planar counterpart [5]. However, the common drawback in these works is the inferior in-band phase balance which can be characterized explicitly by the scattering matrix.…”

Section: Introductionmentioning

confidence: 99%

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Balance-Compensated Asymmetric Marchand Baluns on Silicon for MMICs

Yang

Wang

et al. 2014

IEEE Microw. Wireless Compon. Lett.

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The balance compensating techniques for asymmetric Marchand balun are presented in this letter. The amplitude and phase difference are characterized explicitly by and , from which the factors responsible for the balance compensating are determined. Finally, two asymmetric Marchand baluns, which have normal and enhanced balance compensation, respectively, are designed and fabricated in a 0.18 CMOS technology for demonstration. The simulation and measurement results show that the proposed balance compensating techniques are valid in a very wide frequency range up to millimeter-wave (MMW) band.

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“…The [S] matrix of the Comp. line is given by (5) By combining the three parts in terms of Section I, Comp. line and Section II together, we have…”

Section: A Traditional Asymmetric Marchand Balunmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Balance-Compensated Asymmetric Marchand Baluns on Silicon for MMICs

Yang

Wang

et al. 2014

IEEE Microw. Wireless Compon. Lett.

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“…The balun is composed of a pair of coupled spiral inductors and slot pattern ground structure [9]. The slot pattern ground lowers the Q-factor of inductors so that the balun can achieve the wide bandwidth.…”

Section: Configuration and Designmentioning

confidence: 99%

Bandwidth enhancement of K‐band CMOS mixer using balun matching for UWB radar

Choi

Kim

et al. 2008

Micro & Optical Tech Letters

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A K‐band double balanced mixer with 1.9 GHz ultra‐wide bandwidth in a 0.18 μm CMOS technology is presented in this article. Baluns with slot pattern ground were applied to the proposed mixer for an ultra‐wide band matching in RF and LO ports. The mixer down converts RF signals (23.1–25 GHz) to intermediate frequency signals (100 MHz–1 GHz) using a LO signal of 24.1 GHz. The mixer achieves a conversion gain of 3.4 dB with a RF signal of 24 GHz and a LO signal of 24.1 GHz. A 1 dB compression point of the mixer is −4 dBm, and the mixer consumes 20 mA current with a 1.8 V supply. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 232–235, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23991

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“…A Marchand type balun with slot pattern ground [9] is applied to the local oscillator (LO) port of mixer to convert balanced to single-ended structure and to test using a single GSG (ground signal ground) probe. The balun achieves wide bandwidth performance about 50% (18.4 -32.2 GHz); phase difference less than 5°, amplitude difference less than 1 dB, 10-dB return loss, and 5-dB insertion loss.…”

Section: Configuration and Designmentioning

confidence: 99%

“…Some of the earliest methods for calibration of vibration transducers and vibration amplitude measurement were based on interferometric techniques [6,7]. In the recent times, optical fibers have been used as sensors for measuring vibration amplitude and several other physical parameters [8][9][10][11]. Polymer optical fibers are in a great demand for the transmission and processing of optical fiber communications compatible with the Internet, which is one of the fastest growing industries of modern times.…”

Section: Introductionmentioning

confidence: 99%

K‐band single balanced mixer for ultra‐wideband radar in 0.18‐μm CMOS technology

Choi

Kim

et al. 2007

Micro & Optical Tech Letters

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A K-band single balanced mixer for ultra-wideband radar using a 0.18-m CMOS technology is presented. The designed mixer was applied to LC ladder matching technique on RF port and INTRODUCTIONRegulation approval for an Ultra-Wideband (UWB, 22-29 GHz) by federal communication commission (FCC) in 2002 has attracted the development of millimeter-wave circuits using complementary metal oxide semiconductor (CMOS) process due to low cost and high productivity. Additionally, rapid advance in silicon CMOS technology is becoming possible to make integrated circuits above 20-GHz frequency band such as a K-band low noise amplifier [1], a 24-GHz voltage controlled oscillator [2], and a 24-GHz mixer [3]. Especially, many downconversion microwave mixers which are one of the most fundamental circuit components were published, for example, a 24-GHz RF front-end including low noise amplifier and mixer [3] and a K-band single balanced mixer with high P1dB compression [6]. The mixers [3-6] based on Gilbert-type which offers good port to port isolation, medium noise figure, and high gain, achieved reasonable performances for gain, isolation, and linearity. However, the shortage of accurate CMOS passive models above 20-GHz frequency still makes it difficult to design wideband mixers for 24-GHz automotive radar applications. To obtain the range resolution of 10 cm, bandwidth is required 1.5 GHz in a pulsed radar system.A K-band down conversion mixer was presented 1.4-GHz bandwidth with 0.13-m CMOS technology in 2005 [7], but it has limitation for low radio frequency (RF) of 19 GHz. Published papers using 0.18-m CMOS technology also showed 3-dB bandwidth about 1 GHz [3, 6]. In this article, a K-band single balanced mixer for ultra-wideband radars, which down converts RF signal of 23.4 -24.8 GHz to 100-MHz intermediate frequency (IF), is designed and measured in 0.18-m CMOS technology. The mixer is designed the specification of 1.5-GHz bandwidth to obtain range resolution of 10 cm. The designed mixer shows the performances of wide bandwidth, high linearity, reasonable power conversion gain, and low supply voltage. CONFIGURATION AND DESIGNThe proposed mixer is fabricated on the silicon substrate with dielectric constant of 11.9 and thickness of 300 m in the 0.18-m TSMC (CMOS) process. This process provides six metals (M1-M6) and one poly layer. A top metal of 2.3-m thick is used for signal line and spiral inductors due to low loss. Provided MIM (metal insulator metal) capacitors consist of Metals 4 -6 and CTM (capacitor top metal). They are used for matching network, DC blocking, and bypass. Poly resistors are available for bias circuit and IF matching network. All passive devices are simulated using the 3D electromagnetic simulator, HFSS, and measured up to 40 GHz using HP 8510C network analyzer for millimeter-wave operation. The proposed single balanced mixer was designed to obtain wide bandwidth performance for automotive radar applications. Figure 1 shows the circuit schematic of the designed single balanced mixer, which r...

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K-band balun with slot pattern ground for wide operation using 0.18 [micro sign]m CMOS technology

Cited by 13 publications

References 1 publication

Balance-Compensated Asymmetric Marchand Baluns on Silicon for MMICs

Balance-Compensated Asymmetric Marchand Baluns on Silicon for MMICs

Bandwidth enhancement of K‐band CMOS mixer using balun matching for UWB radar

K‐band single balanced mixer for ultra‐wideband radar in 0.18‐μm CMOS technology

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