Any of the bowtie arrays are going to be compact. Look at an Antennas Direct DB4e, for example.
https://www.antennasdirect.com/store...v-antenna.html
If you want to try a cheap option, the Eagle Aspen is quite cheap and appears to be a knock-off of the DB2.
http://www.amazon.com/Eagle-Aspen-EA.../dp/B000GIT002 ... if it doesn't prove adequate, you can move up to a 4-bay or 8-bay bowtie design.