Self-calibration of Gain and Output match in LNAs

Abstract

Increasing process variations and tolerance limits such testing approaches quantify performance, fault-tolerant with successive scaling, along with rising costs per design cycle design will directly enhance reliability, by ensuring optimal have made the fault-tolerance paradigm pertinent in RFICs. circuit operation under varying conditions. Due to the high frequencies involved, traditional fault-tolerance Key criteria to such design are minimal intrusion, low methods used in digital and lower frequency analog circuits overheads and ultra-fast calibration. In prior work, we have cannot be applied. This paper presents a non-intrusive and p robust technique of self-calibrating the gain and output match proposed to use the HF supply current drawn by the RF of LNAs. It involves very low overheads and does not degrade , circuit performance in any measurable way, in addition to input-match of a LNA [5]. The gain of the LNA is a critical ultra-fast calibration times (lower than 50 ps). We present parameter to the front-end performance, since it impacts the simulation results of the system designed in the IBM 0.25 pm SNR. A drop in gain due to process variations or faults can process.lead to reduced receiver sensitivity, thus leading to loss of

Novel Control Techniques of Input-Match and Output-Match for an Inductively Degenerated Low Noise Amplifier

“…Concerning the output matching, in Ref. [9], the authors proposed an approach to control the output match S 22 for an inductively degenerated LNA, consisting of tuning the load capacitance placed between the drain of the transistor M 2 and the ground. In this work, the impact of the control is investigated only on the gain and the input match.…”

Sensitivity Analysis for Fault-analysis and Tolerance in RF Front-end Circuitry

“…We have demonstrated such a self-calibration methodology for output-match and gain also [8]. The SA developed in this paper forms the basic set of guidelines for achieving fault-tolerance using self-calibration.…”

Self-Calibration of Output Match and Reverse Isolation in LNAs Based Switchable Resistor

“…However, this technique has some disadvantages; such as difficulty in simulating the inductance variation from the number of spiral inductor and the addition of the switch resistor noise resulting in increased NF [2]. The authors in [4] proposed self-calibration technique of S22 and gain using capacitor turning. This method also uses switches that are the birth of parasites affecting the performance.…”