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thread247-237287 In the previous thread (linked above because it's now closed), I asked a question about matching network design. I had been using a temporary short to measure the electrical delay. biff44 said this... "Certainly above 2.5 GHz, I would use a more accurate method than just...

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 for designing PCB...

Thanks for the response. The chip manufacturer has a recommended layout. This includes size of ground plane and distance to ground plane. Unfortunately, we are size constrained, and I was not able to meet their requirements for ground plane size (I did meet the requirement for distance to...

Hi, We are looking at using a dual band chip antenna for a mobile device. When the antenna is put into our device, it is slightly mismatched at both bands (2.4/5GHz). So I need a matching network. However, if I design a network to match one band, it has a negative impact on the other band...

Hi, I have a question on measuring gain/efficiency. We use antennas in a plastic housing, and we would like to see how different changes affect the gain/efficiency of the antenna. Currently all we have is an Agilent 8714ET 2-port Vector Network Analyzer, which we use to measure the VSWR...

One last question...does the location where I am shorting to ground matter? The board has an antenna, with the matching network pads nearby. There are pads for 2 parallel and 1 series connection. Does it matter which of the 2 parallel I short? After the matching network is a transmission...

Thanks, that clarified a lot for me!

Sorry again for the basic questions, but this whole area is new to me. Could you explain exactly what the electrical delay is and why I need to account for it? When do I need to account for the electrical delay? For example, I am getting demo boards of some antennas from the antenna makers...

I have laid out pads for a matching network very close to the physical antenna. These pads are in a pi filter form. I short the series pads using a zero ohm resistor, and keep the parallel pads open. I measure the impedance at the series pad, right after the 0 ohm resistor. So it is close to...

Hi, I am new to antennas, so this is a fairly basic question. I am trying to design a matching network for a 2.4GHz chip antenna. I use a vector network analyzer to measure the antenna's impedance with no matching network. I then use software to design the matching network, and I lay out...