Title :
A novel UWB high performance digital/analog compatible vector modulator module with MMIC-based devices
Author :
Dai, Yong-Sheng ; Fang, Da-Gang
Author_Institution :
Microwave & Millimeter Wave Lab., Nanjing Univ. of Sci. & Technol., China
Abstract :
The independent adjustment of the amplitude and phase through digital or analog control is realized in the proposed novel ultra-wide-band (UWB) vector modulator operating in the bandwidth of 4-16GHz. Under digital control, the step size is 2dB with 32 steps for amplitude and 11.25° with 32 steps for phase. Under analog control, the dynamic range is 80dB for amplitude and 360° for phase. The modulator is composed of several chips which are assembled on a carrier with the size of less than 4.8mm by 3.8mm. Both the input and the output are 50Ω coplanar waveguides. The measurement results show the good performance of this modulator.
Keywords :
MMIC; coplanar waveguides; modulators; ultra wideband technology; 4 to 16 GHz; 50 ohm; MMIC-based devices; UWB digital/analog compatible vector modulator module; analog control; coplanar waveguides; digital control; Amplitude modulation; Assembly; Bandwidth; Coplanar waveguides; Digital control; Digital modulation; Dynamic range; Phase modulation; Semiconductor device measurement; Ultra wideband technology;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606511
