Efficient UWB low noise amplifier with high out of band interference cancellation

Abstract

This work provides a new co‐design methodology of ultrawide band (UWB) low‐noise amplifier (LNA) with high out of band interference cancellation. The solution consists to cascade a selective microstrip UWB bandpass filter (BPF) with the proposed 0.18 µm complementary metal–oxide–semiconductor‐based LNA. Indeed, the usefulness of this co‐design technique is to address the interference mitigation through the BPF and amplification function by using the LNA. The proposed solution remains powerful since the out of band interferences are well avoided with an efficient amplification performance while well fulfilling UWB requirements, i.e. good matching over a wide bandwidth from 3.2 to 10.64 GHz, 17 dB of power gain (S21), the noise figure varies between 2.5 and 5.7 dB, and the dissipated power (PDC) is typically 16.5 mW. It is relevant to point out that the computed figure‐of‐merit of the proposed circuit is 29.03 which is very competitive compared with state‐of‐the art.

Performance of ultra‐wide band DCBLNA with suspended strip line radiator for human breast cancer diagnosis medical imaging application

“…It is kept low by introducing R–L series peaking. The NF of the device is determined by the below mentioned equation [18]: where is power consumption and is output power, while …”

“…However, the use of inductive coupling has its obvious limitations. Thus, the combinational matching network can be devised to achieve optimised matching to couple UWB band signal [18]. The rest of the paper is organised as follows.…”

A two-stage power amplifier design for ultra-wideband applications

“…Two solutions have been proposed by the IEEE802.15.3a. The first proposal is the multiband orthogonal frequency division multiplexing (MBOFDM) UWB and the second represents the direct sequence code division multiple access (DS_CDMA) UWB [16][17][18][19][20][21][22][23][24][25]. The first generation UWB system uses a low-frequency band of 3.5 to 5.1 GHz in its required approach.…”

3‐5 GHz multifinger CMOS LNA using a simultaneous noise and impedance matching technique by a significant reduction of broadband impedance variation of metal–oxide–semiconductor field effect transistor

“…Therefore, the performance of the LNA largely determines the performance of a receiver. A highly efficient LNA means to satisfy a stringent trade‐off among the LNA characteristics namely impedance matching, noise figure (NF), forward gain ( S 21 ), power consumption and linearity [2, 3]. Fulfilling these parameters within the ultrawideband (UWB) spectrum is more challenging than the case of the narrow band [4, 5].…”