245 GHz SiGe transmitter with integrated antenna and external PLL

Schmalz, K.; Wang, Ruoyu; Borngräber, J.; Dębski, Wojciech; Winkler, Wolfgang; Meliani, C.

doi:10.1109/mwsym.2013.6697430

Cited by 36 publications

(26 citation statements)

References 5 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The output power of the single TX without antenna is 1 dBm at 245 GHz [5]. The antenna gain was calculated by subtracting this output power from the measured EIRP (effective isotropic radiated power) of 7 dBm [5]. This estimated value of 6 dBi around of 245 GHz is in agreement with the simulation results (7 dBi) for the single LBE antenna.…”

Section: Performance Of the Tx Arraysupporting

confidence: 78%

“…The 1/64 frequency divider is coupled inductively to the push-push oscillator core at fundamental frequency. The PA uses two stages with a transformer-coupled topology [5]. The PA draws 53 mA at 4 V supply voltage.…”

Section: Circuit Designmentioning

confidence: 99%

“…The distance between the horn antenna and the TX array on wafer was set to 9.9 cm. The output power of the single TX without antenna is 1 dBm at 245 GHz [5]. The antenna gain was calculated by subtracting this output power from the measured EIRP (effective isotropic radiated power) of 7 dBm [5].…”

Section: Performance Of the Tx Arraymentioning

confidence: 99%

See 2 more Smart Citations

245 GHz SiGe Transmitter Array for Gas Spectroscopy

Schmalz

Borngräber

Dębski

et al. 2014

2014 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS)

Self Cite

View full text Add to dashboard Cite

A 245 GHz transmitter (TX) array with an integrated antenna-array for a gas spectroscopy system has been realized, which consists of a push-push VCO with a 1/64 frequency divider, power amplifiers, frequency doublers, and on-chip antennas with localized backside etching. The TX-frequency is tunable in the range from 238 GHz to 252 GHz. The TX-array is fabricated in 0.13 µm SiGe:C BiCMOS technology with f T /f max of 300GHz/500GHz. Its estimated output power is 7 dBm at 245 GHz, and the EIRP reaches 18 dBm at 245 GHz. The spectroscopy system includes a TX and a receiver in SiGe. The sensitivity of this spectroscopy system is demonstrated by the high-resolution absorption spectrum of methanol and will be increased further by this TX-array.

show abstract

Section: Performance Of the Tx Arraysupporting

confidence: 78%

Section: Circuit Designmentioning

confidence: 99%

See 1 more Smart Citation

245 GHz SiGe Transmitter Array for Gas Spectroscopy

Schmalz

Borngräber

Dębski

et al. 2014

2014 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS)

Self Cite

View full text Add to dashboard Cite

show abstract

“…The implementation of integrated mm-wave radiation sources and detectors offers a path towards a compact and low-cost system for gas spectroscopy. Mm-wave sources and detectors for this frequency range are now available as demonstrated by integrated transmitters and receivers [3][4][5][6] in advanced SiGe technology.This Letter presents a gas spectroscopy system operating at 245 GHz, which consists of TX and RX chips, which were fabricated in IHP's 0.13 µm SiGe BiCMOS technology [7]. The effective antenna gain of the TX and the RX is increased by dielectric lenses made from high-density polyethylene.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

Tunable 245 GHz transmitter and receiver in SiGe technology for gas spectroscopy

et al. 2014

View full text Add to dashboard Cite

A 245 GHz sensor system for gas spectroscopy is presented, which includes an integrated SiGe transmitter (TX) and receiver (RX), and a 0.6 m-long gas absorption cell between the TX and RX modules. The integrated local oscillators (LOs) of TX and RX chips are controlled by two external phase-locked loops (PLLs), whose reference frequencies are swept with constant frequency offset for a low intermediate frequency of the RX. The RX consists of a differential low-noise amplifier, an integrated 122 GHz LO with a 1/64 divider, a 90°differential hybrid and an active subharmonic mixer. The TX consists of an integrated 122 GHz LO with a 1/64 divider, and a frequency doubler. The TX and RX chips are fabricated in 0.13 µm SiGe BiCMOS technology with f T /f max of 300 GHz/500 GHz. Using external dielectric lenses for the TX and RX modules, the gas absorption spectra were measured for acetonitrile and methanol.Introduction: Recently, sensor systems for gas spectroscopy in the millimetre (mm)-wave region, which are based on commercial available components, have been reported, which use frequency synthesis techniques in the region around 10 GHz, with frequency multiplication to 210-270 GHz [1]. In [1, 2], the mm-wave power was propagated quasi-optically with horn antennas and lenses through a 1.2 m-long gas absorption cell. Using this technique, a chemical analysis of the exhaled human breath was performed, and this sensor system may become the technique of choice for a broad range of chemicals [2]. The implementation of integrated mm-wave radiation sources and detectors offers a path towards a compact and low-cost system for gas spectroscopy. Mm-wave sources and detectors for this frequency range are now available as demonstrated by integrated transmitters and receivers [3][4][5][6] in advanced SiGe technology.This Letter presents a gas spectroscopy system operating at 245 GHz, which consists of TX and RX chips, which were fabricated in IHP's 0.13 µm SiGe BiCMOS technology [7]. The effective antenna gain of the TX and the RX is increased by dielectric lenses made from high-density polyethylene. The performance of the sensor system is demonstrated by the high-resolution mm-wave absorption spectra of acetonitrile and methanol.

show abstract

245 GHz SiGe sensor system for gas spectroscopy

Schmalz

Wang

Dębski

et al. 2015

Int. J. Microw. Wireless Technol.

Self Cite

View full text Add to dashboard Cite

A 245 GHz sensor system for gas spectroscopy is presented, which includes a SiGe receiver (RX), a SiGe transmitter (TX), and a 0.6 m long gas absorption cell between the TX and RX. The integrated local oscillators of the RX and the TX are controlled by two external phase locked loops (PLLs), whose reference frequencies are swept with constant frequency offset for a low IF of the RX. The RX consists of a differential low noise amplifier (LNA), an integrated 122 GHz local oscillator (LO) with 1/64 divider, a 90° differential hybrid, and active subharmonic mixer. The TX consists of an integrated 122 GHz LO with 1/64 divider, and a frequency doubler. The RX and TX are fabricated in 0.13 µm SiGe BiCMOS with ft/fmax of 300/500 GHz. Using external dielectric lenses for the TX and RX, the absorption spectrum of gaseous methanol has been measured. The reference frequency of the TX-PLL is modulated for frequency-modulation spectroscopy. The performance of the sensor system is demonstrated by measuring the 2f absorption spectrum (second harmonic detection) of gaseous methanol.

show abstract

245 GHz SiGe transmitter with integrated antenna and external PLL

Cited by 36 publications

References 5 publications

245 GHz SiGe Transmitter Array for Gas Spectroscopy

245 GHz SiGe Transmitter Array for Gas Spectroscopy

Tunable 245 GHz transmitter and receiver in SiGe technology for gas spectroscopy

245 GHz SiGe sensor system for gas spectroscopy

Contact Info

Product

Resources

About