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Paper Information

Journal:   IRANIAN JOURNAL OF ELECTRICAL AND ELECTRONIC ENGINEERING   JUNE 2016 , Volume 12 , Number 2; Page(s) 119 To 125.
 
Paper: 

A CONCURRENT DUAL-BAND LOW NOISE AMPLIFIER FOR GNSS RECEIVERS

 
 
Author(s):  SAFARI M., EGHTESADI M., MOSAVI M.R.*
 
* DEPARTMENT OF ELECTRICAL ENGINEERING, IRAN UNIVERSITY SCIENCE AND TECHNOLOGY TEHRAN, IRAN
 
Abstract: 

In this paper, a new design of concurrent dual-band Low Noise Amplifier (LNA) for multi-band single-channel Global Navigation Satellite System (GNSS) receivers is proposed. This new structure is able to operate concurrently at frequency of 1.2 and 1.57 GHz. Parallel and series resonance parts are employed in the input matching in order to achieve concurrent performance. With respect to used pseudo-differential structure, LNA is basically a single-ended-to-differential conversion and it consequently has no need to balun. In addition, an inductively degenerated cascode approach is employed to have better simultaneous matching and Noise Figure (NF). Simulations are performed with TSMC 0.18?m technology in ADS software. Results analysis present that LNA achieves input matchings of -11.024 and -13.131 dB, NFs of 2.315 and 2.333 dB, gains of 26.926 and 27.576 dB, P-1dB of -15.3 and -13 dBm, IIP3 of -0.9 and 2.2 dBm at 1.2 and 1.57 GHz, respectively. Besides, LNA consumes 8.32 mA DC current from a 1.8 V supply voltage.

 
Keyword(s): CONCURRENT DUAL-BAND, GNSS, IMPEDANCE MATCHING, LNA, NOISE FIGURE
 
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