SuperSpec is an ultra-compact spectrometer-on-a-chip for millimeter and submillimeter wavelength astronomy. Its very small size, wide spectral bandwidth, and highly multiplexed readout will enable construction of powerful multibeam spectrometers for high-redshift observations. The spectrometer consists of a horn-coupled microstrip feedline, a bank of narrow-band superconducting resonator filter...

Two t>pes of active antenna elements have been studiedexperimentally One type uses a mkrostrip antenna with an active devicemounted directlv on the antenna. The other uses an active device coupledlo a microstrip patch antenna through an aperture. Microstrip activeantenna elements and two-element arrays have been demonstrated for bothtypes of circuits. Injection locking of th...

Introduction: With the increasing variety of commercial wireless applications, there is now a requirement to incorporate several transceivers into a single hardware device [1]. To achieve high integration and minimise costs, it is an advantage to design transceivers that can be reconfigured for different frequency bands or share common blocks, rather than implementing the transceivers separatel...

In this paper, a very brief and comprehensive survey of recent trends and developments in microstrip antenna research is presented. Comparatively newer fields with potential scope of developments are discussed in more detail. Some advanced topics of microstrip antennas still find enormous scope of improvements and are covered in the limited scope of this article.

Microstrip Patch Antenna (MPA) is generally used in modern communication devices, and a large part of day-to-day communication is done through it. Study of literature of past few year shows that, the leading work on MPA is focused on designing compact sized broadband microstrip antenna. But inherently MPA have narrow bandwidth so to enhance bandwidth various techniques are engaged. This review ...

The study of Microstrip patch antennas have made great progress in recent years. Compared with conventional antennas, Microstrip patch antennas have more advantages and better prospects. They are lighter in weight, low volume, low cost, low profile, smaller in dimension and ease of fabrication and conformity. Moreover, the Microstrip patch antennas can provide dual and circular polarizations, d...

We have developed a new technique for accurate measurement of the loss of superconducting microstrips at mm-wave frequencies. In this technique, we optically couple power to slot antenna, which is connected to one port of a hybrid coupler. One of the output ports of the hybrid delivers power to a series of mm-wave microstrip resonators which are capacitively coupled to a feedline followed by an...