Multichannel vector sum phase shifter.
نویسندگان
چکیده
A novel multichannel vector sum phase shifter that is suitable for phased array antenna applications is demonstrated. Each channel is implemented using a distinct optical wavelength. Selective control of each channel is performed using an acousto-optic polarization coupler. The concept is successfully demonstrated for two individually controlled channels. For each channel, a continuously variable frequency linear phase shift is demonstrated between DC and 7 GHz, with the phasing range exceeding 100 degrees.
منابع مشابه
A Novel Photonic Vector-Sum Phase Shifter Using Polarization Maintaining Fibers
We propose and demonstrate a novel photonic phase shifter based on vector summation technique using polarization maintaining fibers (PMF). The phase change is achieved by controlling the modulator bias point and the polarization state of the signal injected into PMF. By controlling PMF length, 2π phase change is possible at microwave and millimeter wave frequencies.
متن کاملAn X-band RFIC Active Phase Shifter
An active RFIC X-band phase shifter is implemented using IHP SiGe HBT 0.25 μm SGB25V technology with an improved vector sum method. The chip is formed by a three way Wilkinson power divider, three phase delays for 0-120-240 degrees, three similar RFIC LNAs and a final three way Wilkinson power combiner on the same chip and occupies an area of 4x1.8 mm2. The circuit provides both phase and ampli...
متن کاملFull 360circ Vector-Sum Phase-Shifter for Microwave System Applications
An innovative vector-sum phase shifter with a full 360◦ variable phase-shift range is proposed and experimentally demonstrated in this paper. It employs an active balun and a very high-speed CMOS operational transconductance amplifier (OTA) integrator to generate the four quadrature basis vector signals. The fabricated chip operates in the 2–3 GHz, it exhibits an average insertion gain of 1.5 d...
متن کاملBiCMOS Colpitts Oscillator for Vector- Sum Interpolators
Purpose – The demand for higher bandwidth has resulted in the development of mm-wave phased array systems. This paper explores a technique that could be used to feed the individual antennas in a mm-wave phased array system with the appropriate phase shifted signal, to achieve required directivity. It presents differential Colpitts oscillators at 5 GHz and 60 GHz that can provide differential ou...
متن کاملDemonstration of a Wideband Photonic Phased Array Using Integrated Optical Rf Phase Shifter Based on the Vector S U M Approach
In this paper, a wideband photonic phased array antenna is demonstrated. The array configuration consists of a 4x1 Vivaldi single-polarization antenna array and an independent photonic phasing system for each element. The phasing network of this array is implemented using two novel photonic phase shifters based on the vector summation approach. A vector sum phase shifter (VSPS), which can be co...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Optics letters
دوره 31 5 شماره
صفحات -
تاریخ انتشار 2006