A monolithic W-band HEMT VCO with feedback topology

Siweris, H.J.; Tischer, H.; Grave, T.; Kellner, W.

doi:10.1109/mwsym.1999.779415

Cited by 21 publications

(4 citation statements)

References 5 publications

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“…Alternatively, FET or HEMT oscillators can operate at much higher frequencies and are typically used in 70-200 GHz range [4], [5]. A HEMT voltage-controlled oscillator (VCO) for automotive applications has been reported [4].…”

Section: Introductionmentioning

confidence: 99%

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80 GHz MMIC HEMT VCO

Radisic

Samoska²,

Micovic³

et al. 2001

IEEE Microw. Wireless Compon. Lett.

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Section: Introductionmentioning

confidence: 99%

“…A HEMT voltage-controlled oscillator (VCO) for automotive applications has been reported [4]. It demonstrated tuning range of 2 GHz and an output power of 7 dBm.…”

Section: Introductionmentioning

confidence: 99%

80 GHz MMIC HEMT VCO

Radisic

Samoska²,

Micovic³

et al. 2001

IEEE Microw. Wireless Compon. Lett.

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“…In addition to the phase-noise issues of MMIC -band oscillators, the temperature stability of the oscillators is also relatively poor [45] and requires compensation. This has performance implications for both pulsed and FMCW systems in addition to the legal requirement to operate within a defined band of the frequency spectrum.…”

Section: A Performance Issues Of Using Mmics As Frequency Sources Anmentioning

confidence: 99%

A compact manufacturable 76-77-GHz radar module for commercial ACC applications

Gresham

Jain

Budka

et al. 2001

IEEE Trans. Microwave Theory Techn.

129

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The design and measured results of a single-substrate transceiver module suitable for 76-77-GHz pulsed-Doppler radar applications are presented. Emphasis on ease of manufacture and cost reduction of commercial millimeter-wave systems is employed throughout as a design parameter. The importance of using predictive modeling techniques in understanding the robustness of the circuit design is stressed. Manufacturing techniques that conform to standard high-volume assembly constraints have been used. The packaged transceiver module, including three waveguide ports and intermediate-frequency output, measures 20 mm 22 mm 8 mm. The circuit is implemented using discrete GaAs/AlGaAs pseudomorphic high electron mobility transistors (pHEMTs), GaAs Schottky diodes, and varactor diodes, as well as GaAs p-i-n and pHEMT monolithic microwave integrated circuits mounted on a low-cost 127-m-thick glass substrate. A novel microstrip-to-waveguide transition is described to transform the planar microstrip signal into the waveguide launch. The module is integrated with a quasi-optical antenna. The measured performance of both the component parts and the complete radar transceiver module is described.

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“…Leaked content of this carrier in the transmitted signal, caused by the finite isolation of the Tx mixer, is used as the reference signal for a following phase-locked loop (PLL). Within the loop, a low-noise Xband voltage controlled oscillator (VCO) is used instead of a 77 GHz oscillator, promising lower phase noise compared to the oscillators published in [6], [7] and [8], even with the 20 log(N ) increase [9] caused by the multiplier-by-8 in front of the Rx mixer's LO input. To drive the 9.6 GHz PLL with a E-band reference, a frequency divider-by-8 precedes the phase detector.…”

Section: Introductionmentioning

confidence: 99%

Divide-by-8 phase detector MMIC for PLL-based carrier recovery in E-band communication

Messinger

Müller

Antes

et al. 2015

2015 German Microwave Conference

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A combined frequency divider and phase detector MMIC has been successfully realized in an GaAs mHEMT process with 100nm gate length, forming the base of a PLL carrier recovery for an E-band communication system. The frequency-divider-by-8 provides a sensitivity down to -54dBm - to the author's knowledge the highest sensitivity published in the E-band - and a bandwidth of 4.2GHz at a reference input power of -8 dBm. In an on-wafer measurement, the phase detector is measured with a detector gain of 293 mV/rad. In total, the IC draws a DC power of 734mW and measures 1.5 × 3.5 mm2

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A monolithic W-band HEMT VCO with feedback topology

Cited by 21 publications

References 5 publications

80 GHz MMIC HEMT VCO

80 GHz MMIC HEMT VCO

A compact manufacturable 76-77-GHz radar module for commercial ACC applications

Divide-by-8 phase detector MMIC for PLL-based carrier recovery in E-band communication

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