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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Chang, D.C.D. Klimczak, W.N. Busche, G.C. |
| Copyright Year | 1988 |
| Description | Author affiliation: Hughes Aircraft Co., Segundo, CA, USA (Chang, D.C.D.; Klimczak, W.N.; Busche, G.C.) |
| Abstract | A digital beamforming (DBF) array was fabricated and tested using commercially available parts to demonstrate beam agility and reconfigurability. The antenna portion of the DBF system consists of a 2*4 array of microstrip patch elements. The patch radiators are corner-fed square elements with a diagonal slot for circular polarization designed at 2.95 GHz in Duroid. The signal is split into I (inphase) and Q (quadrature phase) channels, and each channel is converted into a digital signal by an 8-b A/D (analog-to-digital) converter at a 5 MHz rate. The I and Q channels of each element are multiplied by an 8-b weight vector. The results of the I multiplications and Q multiplications are separately summed and then detected and converted to a DC voltage output proportional to the input received signal level. Numerous different patterns were obtained by varying the I and Q weight vectors appropriately. The experimental and theoretical patterns of a flat-top-beam and a difference pattern obtained by inverting the phase of half of the array are shown.< |
| Starting Page | 1300 |
| Ending Page | 1303 |
| File Size | 101512 |
| Page Count | 4 |
| File Format | |
| DOI | 10.1109/APS.1988.94337 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1988-06-06 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Array signal processing Microstrip antenna arrays Radiofrequency amplifiers Radio frequency Bandwidth Energy consumption Low-noise amplifiers Phase shifters Power dividers Costs |
| Content Type | Text |
| Resource Type | Article |
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