| Autor: |
Liu, Qiang, Liu, Hongli, Liu, Yuanan |
| Zdroj: |
Electronics Letters (Wiley-Blackwell); Sep2014, Vol. 50 Issue 19, p1454-1456, 3p |
| Abstrakt: |
A compact ultra‐wideband 90° phase shifter based on a short‐circuited stub and a weak coupled line (WCL) is proposed. The circuit configuration and derivation of S‐parameters and phase difference are presented. The analysis result indicates that the phase deviation (PD) bandwidth can be extended to 200% by adjusting the coupling coefficient of the WCL. The fabricated phase shifter exhibits a bandwidth of 118% from 0.66 to 2.56 GHz for return loss >10 dB, insertion loss (IL) <0.5 dB and a PD of ±3.9°. Comparison shows that the proposed phase shifter not only has the most compact size with single‐layer structures but also achieves the largest bandwidth and lowest IL. The design features low‐cost, good design portability and convenient installation. Thus it is a good candidate for wideband and ultra‐wideband applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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