Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Jen-Yi Su"'
Publikováno v:
2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC).
A V-band balanced two-stage power amplifier MMICs with Lange couplers is demonstrated using 0.15 µm GaAs pHEMT technology in this paper. A CPWG-MS-CPWG topology with via holes at the transistors as the transition between coplanar waveguide with back
Publikováno v:
Microwave and Optical Technology Letters. 52:1516-1520
This article demonstrates a high-frequency 0.35-μm SiGe HBT subharmonic downconverter with reactive in-phase and quadrature-phase (I/Q) generators.Two reactive I/Q generators are integrated in our work to provide differential quadrature RF and LO si
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 57:1063-1073
In this paper, three kinds of Kalpha/Ku-band Gilbert mixers are demonstrated using 0.15- mum AlGaAs/InGaAs pseudomorphic high electron mobility transistor technology. Thanks to the semiinsulating GaAs substrate, microwave passive components have a lo
Publikováno v:
IEICE Transactions on Electronics. :520-523
A selectively ion-implanted collector (SIC) is implemented in a 0.8μm BiCMOS process to improve the RF characteristics of the BJT devices. The SIC BJT device has better f t and f max than the FIC (fully ion-implanted collector) BJT device because th
Publikováno v:
Microwave and Optical Technology Letters. 48:2096-2100
This paper demonstrates a low-cost 2.4 GHz single-ended frequency divider with the divide-by-value from 256 to 271 in the standard 0.35-μm 2P4M CMOS technology. This frequency divider is composed of a synchronous current mode logic divide-by-4/5 pre
Publikováno v:
Microwave and Optical Technology Letters. 48:2067-2070
Two major techniques for gain improvement of the CMOS low noise amplifier (LNA) and mixer are presented. First, the inductive interstage matching is applied to design a cascode amplifier for increasing the power transfer between the common source (CS
Publikováno v:
Microwave and Optical Technology Letters. 49:215-218
PCLs, shunt stubs, and unit lines have been modified to count for the fringing capacitance and discontinuity effects [10]. The filter shown in Figure 6 is fabricated on a substrate with a relative dielectric constant of 3.38, a loss tangent of 0.0025
Publikováno v:
Microwave and Optical Technology Letters. 48:780-783
A compact physics-based transit-time model is established for the GaInP/GaAs HBT device. The VBIC model fails to describe the transit-time frequency versus bias (IC, VCE), especially at low- and medium-current regimes. Starting with the HICUM model,
Publikováno v:
Microwave and Optical Technology Letters. 51:2663-2665
In this article, a 40-GHz subharmonic Gilbert down-conversion mixer with an accurate quadrature local oscillator (LO) input is demonstrated using a standard 0.13-μm CMOS technology. The quadrature-output frequency divider is realized by injection-lo