Integrated Low Pass Filter for M-Sequence UWB Radars

Pecovsky, Martin; Sokol, Miroslav; Galajda, Pavol

doi:10.1109/radioelektronika49387.2020.9092379

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…However, the improved versions of filters [ 50 ] can be designed later based on the knowledge gained from the proof-of-concept circuits. The design of an integrated low-pass filter with 1 GHz cutoff frequency has been described in detail in our earlier work [ 51 ]; therefore, we will discuss the bandpass filter design in this paper.…”

Section: Integrated Ecc Bandpass Filter For M-sequence Uwb Radar Smentioning

confidence: 99%

Recent Advances in ASIC Development for Enhanced Performance M-Sequence UWB Systems

Galajda

Pecovsky

Sokol

et al. 2020

Sensors

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Short-range ultra-wideband (UWB) radar sensors belong to very promising sensing techniques that have received vast attention recently. The M-sequence UWB sensing techniques for radio detection and ranging feature several advantages over the other short-range radars, inter alia superior integration capabilities. The prerequisite to investigate their capabilities in real scenarios is the existence of physically available hardware, i.e., particular functional system blocks. In this paper, we present three novel blocks of M-sequence UWB radars exploiting application-specific integrated circuit (ASIC) technology. These are the integrated 15th-order M-sequence radar transceiver on one chip, experimental active Electronic Communication Committee (ECC) bandpass filter, and miniature transmitting UWB antenna with an integrated amplifier. All these are custom designs intended for the enhancement of capabilities of an M-sequence-based system family for new UWB short-range sensing applications. The design approaches and verification of the manufactured prototypes by measurements of the realized circuits are presented in this paper. The fine balance on technology capabilities (Fc of roughly 120 GHz) and thoughtful design process of the proposed blocks is the first step toward remarkably minimized devices, e.g., as System on Chip designs, which apparently allow broadening the range of new applications.

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Section: Integrated Ecc Bandpass Filter For M-sequence Uwb Radar Smentioning

confidence: 99%

Recent Advances in ASIC Development for Enhanced Performance M-Sequence UWB Systems

Galajda

Pecovsky

Sokol

et al. 2020

Sensors

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“…[18][19][20][21][22] Centurelli et al 23 proposed a 10 GHz low-pass biquad that exploited cross-coupled transistors together with a capacitor to implement the active inductor and used this approach to design a sixth-order filter. 24 Some of the proposed filters in the low-GHz range exploit classical low-frequency approaches such as Sallen-Key [25][26][27] or Tow-Thomas 28 biquads: Their closed-loop nature should improve the linearity of the filter, whereas the maximum frequency is limited by the technology. The availability of deep submicron CMOS and SiGe BiCMOS technologies with maximum f T of hundreds of GHz 29 opens the way to the use of the closed-loop approach for the design of filters with cutoff frequencies of 10 GHz and beyond.…”

Section: Introductionmentioning

confidence: 99%

A 17 GHz inductorless low‐pass filter based on a quasi‐Sallen–Key approach

Bocciarelli

Centurelli

Monsurrò

et al. 2023

Circuit Theory & Apps

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SummaryIn this paper, an evolution of the Sallen–Key biquad architecture is presented, suitable for applications at very high frequency. The pole of the buffer amplifier is exploited as one of the poles of the biquad, therefore overcoming the constraints it poses on the maximum resonance frequency that can be achieved. This allows designing low‐pass filters with cutoff frequencies above 10 GHz without using bulky inductors and with good linearity performance provided by the use of feedback. This approach has been exploited to design a biquad in a commercial SiGe BiCMOS technology with maximum of about 320 GHz. The biquad has been designed to provide a resonance frequency of 12 GHz and a quality factor Q of 1.9; postlayout simulations show a cutoff frequency in excess of 17 GHz, 15.75 mW of power consumption, an equivalent input noise below 1 Vrms, and −52 dB of total harmonic distortion (THD) for a 640 mVpp input signal, with a very limited area consumption.

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