biquad configurations work well, but are directional and several factors can cause interference.
you can have a lot of fun connecting your wireless router to an OTA antenna. all you need is a few adapters and an amp for good measure.
The directivity of a biquad is an asset, IMHO, little or no channel interference from nearby, off-axis access points. Beamwidth of an inverted Dish 500 is about 4 degrees I would guess.
I would be very reluctant to connect any Wi-Fi gear to an OTA antenna; OTA antenna's are designed for MUCH longer wavelengths, and typically 300 or 75 ohm impedance. Without careful attention to impedance matching to the 50 ohm Wi-Fi source, the SWR will be so high you risk frying the transmitter . A commercial ($$$) Yagi is the best choice if you don't want want to go the DIY route, but you still need good quality downlead cable or you signal will still be in the toilet.
A poorly matched antenna can easily resonate at undesired harmonics. Of course, the good people at the FCC usually frown on folks generating a lot of RF hash or other "spurious emissions". I am guessing a visit from them is never pleasant.
802.11 bi-directional amps are available, but are out of the price range of most hobbyists. A high power Wi-Fi usb adapter with an RP SMA connector is less that $40, A PCI card for a desktop is ~$25, and the street price for a 4 port Wi-Fi router is less than that. Pre-made cables run ~$20-35. Less than $100 for long range Wi-Fi is a bargain and overcomes the 100 meter distance limitation of Cat5 cable and the hassle of getting it from points A to B.
I am a big fan of using COTS (Commercially available, Off The Shelf) technology whenever possible, and re-purposing it to solve a problem. My thanks to Trevor Marshall for having done most of the grunt work.