Build a portable VHF yagi antenna for 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4 CPVC pipe with one tee.
A portable 4 elements quad antenna for 144 MHz, 9 to 10 DBd forward gain, 30 DB front-to-back ratio, and 33 DB front-to-side ratio
A portable VHF home-made Yagi-Uda antenna, that is extremely easy to build and very cheap. Moreover this antenna, while dismounted is just 1 meter long, and the total weight is just 100 grams.
A simple portable VHF ground plane antenna project used for ARES activities
The I DX is a homemade 3 element portable Yagi-UDA ante a for 144 MHz
An easy to build moxon antenna for portable use. A Moxon Rectangle is a two element beam, where both elements are folded towards eachother.
Design for a 5 element 2 Metre beam with a forward gain of 8dBD and a front to back ratio of over 24dB.
This 2 meter 3 element cubical quad antenna is small, light weight and portable. A backpack antenna that is easy to put together in just minutes and parts store inside the boom making it ready for travel or storage.