Combined mechanical package shield antenna
The present invention relates to antennas for radio signal frequencies, an electromagnetic shield and a mechanical package for electronic components. The antenna uses a three-dimensional conductive structure to enclose the components that are used for the transmission and reception of wireless devices. This conductive structure preferably encloses electronic components. The structure can be divided into two or more sections such that each section is enclosed providing shielding from external electromagnetic fields. Each conductive section is connected to the antenna port or ports of the device it contains. The conductive mechanical package is preferably sized to resonant at the desired frequency of operation. If the electromagnetic fields to be radiated are within and outside the package, the internal bulkheads can be used to control the desired resonant modes. Photonic band gap structures can be also used to connect the pole elements.
1. An antenna for a wireless device, comprising:
a first pole element;
a second pole element;
electronic components; and
an interconnect structure, which mechanically joins the first pole element to the second pole element, wherein the first pole element, the second pole element, or the interconnect structure enclose the electronic components, and wherein the combination of the first pole element, the second pole element and the interconnect structure define a mechanical package shield antenna with no protruding antenna pole elements.
2. The antenna of claim 1 , wherein the first pole element and the second pole element and the interconnect structure are conductive to function as a dipole antenna.
3. The antenna of claim 1 , further comprising a photonic band gap disposed between the first pole element and the second pole element, wherein the photonic band gap conducts so as to function as an electromagnetic shield when irradiated by electromagnetic radiation outside the frequencies selected for antenna propagation and as an insulator inside the frequencies selected for antenna propagation.
4. The antenna of claim 1 , wherein the interconnect structure is spaced from the first pole element by an insulator and conductively connected to the second pole element.
5. The antenna of claim 1 , wherein the first and second pole elements are a closed surface figure selected from the group of a cube, a rectangular prism, a square pyramid, a cylinder, a right circular cone, or a sphere.
6. The antenna of claim 1 , wherein the length of the antenna is ≦λ/2, wherein λ is the wavelength of the radiation propagated by the antenna.
7. An antenna for a wireless device, comprising:
a first pole element;
a second pole element;
a printed circuit board; and
an interconnect structure, which mechanically joins the first pole element to the second pole element, wherein the printed circuit board is enclosed in the first pole element, the second pole element, and/or the interconnect structure, which together define a mechanical package and an electromagnetic shield against any electromagnetic radiation, wherein the first pole element and the second pole element and the interconnect structure are conductive to function as a dipole antenna.
8. The antenna of claim 7 , further comprising a photonic band gap disposed between the first pole element and the second pole element, wherein the photonic band gap conducts so as to function as an electromagnetic shield when irradiated by electromagnetic radiation outside the frequencies selected for antenna propagation and as an insulator inside the frequencies selected for antenna propagation.
9. The antenna of claim 7 , wherein the interconnect structure is spaced from the first pole element by an insulator and conductively connected to the second pole element.