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    Balun for network analyzer measurement

    Hi, I'm trying to design a matching circuit for a 13.56MHz loop antenna. The matching circuit is differential . In an app note, they recommend a series inductor + a capacitor to ground on each side of the differential circuit. I was planning on using a network analyzer to measure the...
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    WiFi/Bluetooth Coexistence Testing

    Hi, I am working on a product that has both Bluetooth and WiFi. It has one antenna for Bluetooth, and a separate one for WiFi. I want to measure how much isolation I have between the 2 antennas, to make sure they can coexist. I also want to compare different antenna architectures. Most...
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    Multipath Effects on Polarization

    Hi, I was wondering if anyone had any experience in indoor propagation. In our application we use 2 linearly polarized antennas, both mounted vertically. They are used in a warehouse in an 802.11b/g application. We may have an application where one of the antennas would have to be oriented...
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    IE3D Finite and Infinite Ground Planes

    Hi, I am new to IE3D and am trying to learn it. I would like to use it to design PCB antennas (inverted-F, meander line, etc.). Most examples I've read so far use an infinite ground plane. My question is: what is the difference between using an infinite and a finite ground plane? If...
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    13.56MHz Antenna Q factor - what is good value?

    13.56MHz Antenna Q Hi, I am looking into 13.56MHz antennas to use for ISO 14443 and/or ISO 15693 applications. I've developed prototypes in the lab that are working, but I have a confusion on the 'Q'. The antenna I'm using is a loop antenna, and I match it by using a couple of capacitors...
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    PIFA (Planar Inverted F Antenna)

    planar inverted f antenna Hi, With a PIFA, you can either use a planar inverted F structure (the 3-dimensional structure), or you can implement using PCB traces. Are there pro's and con's to both structures? Or do they both have similar performance? To me it seems like the PCB trace would...
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    practcal book for designing PCB antennas

    Antenna Design Book Our company designs wearable computers that connect to a WiFi network. We mainly use PCB traces for the antenna (inverted F's). Up to now, we have been outsourcing the antenna design. We now want to do the designs in house. Does anybody have a recommendation of a book...

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