A 4–32 GHz SiGe Multi-Octave Power Amplifier With 20 dBm Peak Power, 18.6 dB Peak Gain and 156% Power Fractional Bandwidth

Thayyil, Manu Viswambharan; Li, Songhui; Joram, Niko; Ellinger, Frank

doi:10.1109/lmwc.2019.2942189

Cited by 18 publications

(9 citation statements)

References 9 publications

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“…But it can be seen from Ref. [34] that in circuits biased with relatively low values of base resistances less than 5 kΩ, V BVCER ≈ 3.5 V sets the safe operating area. Thus a conservative maximum collector voltage V max is chosen such that V max ≈ 2 V < V BVCER .…”

Section: System Design and Implementationmentioning

confidence: 99%

“…In order to reduce on-chip PA to LNA leakage and internal frequency pulling, the PA is operated with an output power of around 0 dBm. In order to increase the output power for the desired effective isotropic radiated power (EIRP) to maximise the range, a custom designed PA [34] is used externally. With the output of the balun of around −1 dBm, an EIRP of 20 dBm is obtained for the radar transmit frontend.…”

Section: Fmcw Radar Interrogatormentioning

confidence: 99%

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Integrated superregenerative amplifier based 24 GHz frequency modulated continuous wave radar active reflector tags for joint ranging and communication

Thayyil

Figueroa

Joram

et al. 2023

IET Radar Sonar & Navi

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Concepts for two cooperative active reflector tags (ARTs) for joint ranging and communication in a linear frequency modulated continuous wave secondary radar system are presented along with corresponding theoretical derivations. To prove the concepts, the ARTs operating from 24 to 24.5 GHz are implemented using custom integrated superregenerative amplifiers (SRAs) designed in a 130 nm SiGe BiCMOS technology. The SRAs have a measured minimum detected input power greater than −80 dBm, and an output power greater than 3.2 dBm after wire‐bonding. The ARTs also feature roll invariance using bandwidth enhanced microstrip patch antenna diversity and a novel quench frequency shift keying based low data rate simplex communication. Indoor ranging experiments done to prove the concepts and the theoretical considerations show a maximum distance of 77 m in the ranging mode and a data rate of 0.5 symbols per second in the data transfer mode. For distances less than 5 m, the characterised accuracy is better than 12 cm and the precision is better than 2 cm. To the best of authors' knowledge this is one of the first reported scientific works leading to a proof of concept for integrated superregenerative amplifier based joint ranging and quench frequency shift keying. The combination of maximum range and precision are also one of the best reported among similar works in the literature.

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Section: System Design and Implementationmentioning

confidence: 99%

Section: Fmcw Radar Interrogatormentioning

confidence: 99%

Integrated superregenerative amplifier based 24 GHz frequency modulated continuous wave radar active reflector tags for joint ranging and communication

Thayyil

Figueroa

Joram

et al. 2023

IET Radar Sonar & Navi

Self Cite

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“…With the rapid expansion in the wireless industry [ 1 , 2 ], the power amplifiers (PAs), which play critical roles in developing wireless devices and establishing communication [ 3 , 4 , 5 ], are in high demand. For long-distance transmission, the antennas are driven mainly by the PAs [ 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Relationship between Humidity Conditions and Degradation of Key Specifications of 0.1–1.2 GHz PA in 0.18 μm CMOS

2022

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The specification of power amplifiers (PA) is closely related to humidity variation, and few reports on the humidity properties of PA are available in the literature. Therefore, an experimental study of PA specifications was conducted under different humidity conditions to elucidate the relationship between the degradation of PA specifications and humidity conditions. This paper studies and provides results of the degradation of a PA subjected to different humidity levels. The experimental results show that the S21 and output power decrease with the increase in humidity. The main cause of this degradation is the decrease in oxide capacitance and increase in threshold voltage with increasing humidity, resulting in a reduction of transconductance and an increase in on-resistance. The results of this study can guide designers in designing compensation circuits to achieve some degree of compensation for the degradation of PA specifications.

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“…Among them, GaAs is one of the most suitable mature processes for developing mid-power, high-linearity, and high-efficiency broadband PA. For typologies, the distributed amplifier has a superior bandwidth performance, while it is oversize and inefficient [11,12,13,14,15,16]. The resistive feedback amplifier has the benefit of flat gain and multi-octave bandwidth, with the demerits of ineffective output power and power-added efficiency [17,18,19,20]. The lossy matching amplifier has the advantages of being simple to implement, stable, with good input SWR, and not affecting the output matching load characteristics [21,22,23,24,25].…”

Section: Introductionmentioning

confidence: 99%

A 30MHz-3GHz 1W stacked-FET GaAs MMIC power amplifier

Yu¹,

Li²,

Liu³

et al. 2022

IEICE Electron. Express

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In this letter, a 30 MHz-3 GHz 1 W ultra-broadband stacked power amplifier (PA) fabricated in 0.25 um GaAs pHEMT technology process is presented. By inserting an RC network between the bridge-T input lossy matching network and the stacked-FET, the stability enhancement and input standing wave ratio (SWR) optimization are achieved with high frequency gain compensation. Based on the performance simulations of the stacked-PA with various normalized output load impedance, an optimal output matching method is applied, which obtains 31±1 dBm output power at 15 dBm input power, while the peak PAE achieves 60.2% at 30 MHz and the PAE larger than 35% over all of the operating frequency band. Moreover, the size of MMIC PA achieves 1.51 mm 2 with 50 Ω input and output matching.

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A 4–32 GHz SiGe Multi-Octave Power Amplifier With 20 dBm Peak Power, 18.6 dB Peak Gain and 156% Power Fractional Bandwidth

Cited by 18 publications

References 9 publications

Integrated superregenerative amplifier based 24 GHz frequency modulated continuous wave radar active reflector tags for joint ranging and communication

Integrated superregenerative amplifier based 24 GHz frequency modulated continuous wave radar active reflector tags for joint ranging and communication

Experimental Investigation of Relationship between Humidity Conditions and Degradation of Key Specifications of 0.1–1.2 GHz PA in 0.18 μm CMOS

A 30MHz-3GHz 1W stacked-FET GaAs MMIC power amplifier

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