A 65 nm CMOS Power Amplifier With Peak PAE above 18.9% From 57 to 66 GHz Using Synthesized Transformer-Based Matching Network

Ye, Wanxin; Ma, Kaixue; Yeo, Kiat Seng; Zou, Qiong

doi:10.1109/tcsi.2015.2476315

Cited by 45 publications

(12 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fig. 6 shows Tx schematic, including the on-chip monopole feeder, which consists of a ×63 frequency multiplier and a three-stage PA. Each stage of the PA has a differential CS amplifier using cross-coupled neutralization to increase gain and stability [14]. For broadband operation, impedance matching at each stage is performed with frequency staggering.…”

Section: A Frequency Multipliermentioning

confidence: 99%

79 GHz Active Array FMCW Radar System on Low-Cost FR-4 Substrates

Kim

Shin

et al. 2020

IEEE Access

View full text Add to dashboard Cite

This work, for the first time to our best knowledge, presents a W-band multi-channel frequency-modulated continuous-wave (FMCW) radar system on low-cost FR-4 substrates. A center-fed patch array antenna on an FR-4 substrate can achieve a maximum gain of 10.8 dBi. It is enabled by aperture coupled feeding using an on-chip feeder implemented on a CMOS radar transmitter (Tx) and receiver (Rx). The proposed radar system consists of one Tx and four Rx channels placed in the back cavity of a microstrip array antenna like an active array antenna system. Additionally, Tx and Rx chipsets include a wideband frequency multiplier with high multiplication ratio of 63, making it easy to distribute reference FMCW waveform synthesized at a very low frequency about 1.25 GHz for 79 GHz output using direct digital synthesis (DDS). Extending the number of channels and implementing various waveforms can be easily accomplished with very good phase noise. The functionality of the proposed radar system on low-cost substrates is confirmed by distance and angle measurements.

show abstract

Section: A Frequency Multipliermentioning

confidence: 99%

79 GHz Active Array FMCW Radar System on Low-Cost FR-4 Substrates

Kim

Shin

et al. 2020

IEEE Access

View full text Add to dashboard Cite

show abstract

“…The output balun is finely optimized by the load pull simulations and implemented using a center tapped octagonal topology, which achieves a simulated Q of 16 and 12 (respectively for primary and secondary) and coupling K of about 0.7. For interstage matching networks, we adopt transformers with 1:1 inductance ratio based on the design procedure proposed in [28], [29]. Center taps of these transformers are utilized to provide the supply of the previous stage and the bias of the following stage.…”

Section: B Transmittermentioning

confidence: 99%

A Monolithic Dual-Band 77/94 GHz Transceiver Front-End With Shared Frequency Multiplier

2019

View full text Add to dashboard Cite

This paper presents a monolithic dual-band 77/94 GHz transceiver front-end with shared frequency multiplier. The transceiver front-end consists of two transmitters and receivers, operating at 77 GHz and 94 GHz respectively to support dual-band operation. In order to reduce the dc power consumption and save chip area, a shared frequency multiplier between the two bands is adopted in this work. We employ a frequency tripler cascaded with a doubler as the frequency multiplier to generate the desired 77 GHz signal and to lower down the frequency and phase noise of the local-oscillator (LO). The 94 GHz signal is produced by the generated 77 GHz signal up-mixing with the LO input to share the frequency multiplier for low power and low cost. The conversion gain of the multiplier is boosted by the efficiency enhancement technique in frequency tripler and the proposed gain boosting unit in the output power buffer. Besides, a frequency shunt network at the mixer output is utilized to short the unwanted mixed signal and improve the linearity of the 94 GHz transmitter. The measured saturated output power P sat and 3-dB bandwidth of the 77/94 GHz band transmitter are 14.2/12.35 dBm and 7.5/6 GHz, respectively. A 37.05/27.7 dB receiver conversion gain, 8.8/14.8 dB double side band noise figure are measured in the 77/94 GHz band receiver. The transceiver occupies a core area of 1.12 mm × 2.46 mm and draws 450 mA from a 1.2 V supply voltage. INDEX TERMS Automotive radar, dual-band, frequency tripler, frequency doubler, gain boosting unit, imaging radar, receiver, transmitter.

show abstract

“…To achieve high output power, the design of the mm‐wave PA generally adopts the power combining technique, 12 which employs slow‐wave transmission lines and transformers to realize single‐ended to differential conversion, impedance matching, and power split/combination due to their low loss and small size 13,14 . In this paper, a novel K ‐band PA featuring high gain and high output power has been designed and implemented in a 130‐nm radio frequency (RF) CMOS.…”

Section: Introductionmentioning

confidence: 99%

A K‐band high‐gain power amplifier with slow‐wave transmission‐line transformer in 130‐nm RF CMOS

Hou

Pan

et al. 2021

Circuit Theory & Apps

View full text Add to dashboard Cite

Summary This paper presents a K‐band high‐gain Class‐A power amplifier (PA) with the two‐way combining approach in GSMC 130‐nm radio frequency (RF) complementary metal oxide semiconductor (RF CMOS). At the input, a slow‐wave transmission‐line transformer (S‐TLT) matching network is proposed for simultaneously realizing the impedance transformation and the single‐ended RF signal to differential conversion. Transmission‐line transformers (TLTs) are employed between the stages for coupling and inter‐stage matching. To improve the output power and efficiency, the placing and routing of the transistor layout are considered carefully for power stages to reduce the interconnecting and overlapping parasitics significantly. The PA has been fabricated and achieved good matching at 25 GHz, power gain of 17.8 dB, saturated output power of 14.9 dBm, output 1‐dB compression point of 12.4 dBm, and power added efficiency of 13.7% at a supply voltage of 1.5 V.

show abstract

A 65 nm CMOS Power Amplifier With Peak PAE above 18.9% From 57 to 66 GHz Using Synthesized Transformer-Based Matching Network

Cited by 45 publications

References 20 publications

79 GHz Active Array FMCW Radar System on Low-Cost FR-4 Substrates

79 GHz Active Array FMCW Radar System on Low-Cost FR-4 Substrates

A Monolithic Dual-Band 77/94 GHz Transceiver Front-End With Shared Frequency Multiplier

A K‐band high‐gain power amplifier with slow‐wave transmission‐line transformer in 130‐nm RF CMOS

Contact Info

Product

Resources

About