![]() ![]() Fig 2: Stripline is a related fabrication technology to microstrip, and is made by burying the center conductor between top and bottom layers of the PC board, and acts as a transmission line with impedance which can be set by adjusting the various dimensions. The stripline is often used between a source and antenna, such as a microstrip antenna. It so can be used for both power conveyance and impedance matching between source and load. The stripline is a cost-, space-, and RF-efficient way to create a transmission line having almost any resistive or reactive impedance. It is a center conductor surrounded by dielectric material with top and bottom metal ground planes. Q: There is also the term “stripline” – what’s that?Ī: A stripline is a way to create an RF transmission on and in a PC board, rather than use discrete wiring or coaxial cables, (Figure 2). Fig 1: The BPA-3200 Wideband Body Patch Antenna is a fairly large antenna (5”H × 5 3/4”W) for operation from 30–2000 MHz and can be worn in the proximity to the user’s torso, attached to a backpack, protection vest or in a pocket. In practice, the terms are used interchangeably. You can buy patch antennas as standard components from many sources (Figure 1). In a strict sense, “microstrip” refers to this antenna as a concept, while “patch” refers to its actual realization as a discrete component. Q: What’s the difference, if any, between a microstrip antenna and a patch antenna?Ī: There really is none. This part continues that exploration along with related issues. Part 1 of this FAQ was a brief review of antennas and introduced to microstrip antenna design. The microstrip antenna is a convenient, planar, easy-to-fabricate antenna with some attractive attributes and features, as well as some distinct limitations. ![]()
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