A Tunable Wideband Rf Front-end for Sdr
نویسندگان
چکیده
Today’s direct-conversion SDR platforms are capable of tuning over extremely wide frequency ranges compared to traditional superheterodyne transceiver architectures. However, these radios can suffer from a number of problems due to a lack of front-end RF filtering, including poor dynamic range and desensitization. In this paper, we examine preliminary work on a tunable bandpass filter we are designing to mitigate this problem. The filter is electrically tunable and can be adjusted to cover a carrier frequency range of over two to one with Q on the order of 4.
منابع مشابه
A New Analog-based LO Harmonic Rejection Technique with Tunable Notch Frequency
An effective technique for mixer LO harmonic rejection in a SAW-less wideband receiver front-end is proposed. The proposed technique provides a tunable notch that can be placed at any frequency like mixer LO harmonics, to avoid the aliasing in baseband after mixing. An analog LC notch is used in a cascode transconductor, and it can reject one of the 3rd or 5th harmonics. T...
متن کاملBroadband Receiver for Software Defined Radio in Giga-hz Range Based on 40nm Si Technology Broadband Receiver for Software Defined Radio in Giga-hz Range Based on 40nm Si Technology
In this paper, a low voltage ultra-wideband RF receiver for Software-Defined Radio (SDR) is presented. In SDR design, the radio frequency (RF) receiver should be able to receive signals over a broadbandwidth so that it can satisfy a variety of different communication standards. In the proposed design, working frequency ranging from 0.1GHz to 6GHz RF front-end for SDR, covering almost all of mat...
متن کاملWideband and multiband CMOS LNAs: State-of-the-art and future prospects
The realization of Software Defined Radio (SDR) requires flexible RF front-end to accommodate multiple standards in different frequency bands. In this review paper, we survey the literature over the period 1995–2011 and discuss the state-of-the-art multiband and wideband LNAs in context of different receiver architectures suitable for SDR. Wideband and multiband LNA designs reported in open lit...
متن کاملA Thesis for the Degree of Master A Reconfigurable RF Front-End Using Tunable Interstage Matching for 1.8~2.4 GHz Frequency Band
A reconfigurable RF front-end using a tunable interstage matching network is designed in 0.25 μm CMOS technology. It consists of a wideband LNA, interstage matching network, a Gilbert-cell mixer, and reconfigurable QVCO. Tunability of the interstage matching can be obtained by a MOS varactor. It can change tuning frequency by controlling capacitance of varactor. Gain of the RF front-end can be ...
متن کاملA Platform for At-Scale Wideband UHF MU-MIMO Systems
We present a Multi-User MIMO (MU-MIMO) array utilizing the Wideband UHF Radio daughter-Card (WURC), a new open platform for at-scale MU-MIMO transmissions in the UHF band up to 1 Watt over up to 28 MHz of programmable channel bandwidth. Using this platform, we demonstrate an application that measures and displays wideband MU-MIMO channel estimates and capacity for both UHF and 2.4 GHz WiFi chan...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2011