DocumentCode :
1653572
Title :
Symmetric lattice 45°, 90° and 180° digital phase shifter at 3–6 GHz for LTE, WIFI, Radar applications
Author :
Atasoy, Ercan ; Piri, Farshad ; Yarman, B. Siddik
Author_Institution :
Dept. of Electr. & Electron. Eng., Istanbul Univ., Istanbul, Turkey
fYear :
2015
Firstpage :
1
Lastpage :
4
Abstract :
In this paper, we present a novel phase shifter topologies to construct 45°, 90° and 180° phase shifter cells laid-out using 180 nm TSMC technology. These phase units provides compact circuit sized with reasonable implementation components. Instead of using pin-diodes in the phase shifter topologies, CMOS switches are used to have advantages of simple control circuit for switching and very low power consumption. Operation of the new circuit is based on the phase shifting properties of the symmetrical all-pass LC lattices. As a consequence of this research, it is straight forward to construct phase shifting cells over a wide frequency band, with various angles for multi bit phase array systems. In this work explicit design equations are presented according to ideal lumped elements and normalized frequency. A numerical method which includes the design model is analyzed in MATLAB. Top level design is simulated in CADENCE. Simulations performed with actual elements from TSMC and inductors are designed in ASITIC tool. A phase shift between 3-6GHz is achieved with less than 4.5° phase error for 45°, 90° and 180°. Insertion loss for 45°, 90° and 180° are between 3.4-5.9 dB, 10.3-11.4 dB and 10.9-18.5dB respectively.
Keywords :
CMOS integrated circuits; LC circuits; Long Term Evolution; phase shifters; radar; switching circuits; wireless LAN; ASITIC tool; CADENCE; CMOS switch; LTE; Long Term Evolution; MATLAB; TSMC; TSMC technology; Wi-Fi; complementary metal oxide semiconductor; digital phase shifter; frequency 3 GHz to 6 GHz; inductor; insertion loss; lumped element; multibit phase array system; phase error; pin-diode; power consumption; radar application; size 180 nm; symmetrical all-pass LC lattice; wide frequency band; Bandwidth; CMOS integrated circuits; Inductors; Insertion loss; Lattices; Mathematical model; Phase shifters; ASITIC; CADENCE; CMOS switches; Symmetric Lattice Digital phase shifters; phase shifter MMIC;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signals, Circuits and Systems (ISSCS), 2015 International Symposium on
Conference_Location :
Iasi
Print_ISBN :
978-1-4673-7487-3
Type :
conf
DOI :
10.1109/ISSCS.2015.7203994
Filename :
7203994
Link To Document :
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