Wireless device
A wireless device includes a ground plane layer having a maximum size smaller than half of a longest free-space operating wavelength of the wireless device, a boosting element having a largest dimension smaller than ⅙ times the longest free-space operating wavelength, and a radiofrequency system with a tunable reactive circuit. The tunable reactive circuit includes a switch connected between the boosting element and a transceiver and a bank of fixed matching networks. At least a portion of an orthogonal projection of the boosting element onto a plane containing the ground plane layer overlaps the ground plane layer.
1 . A wireless device configured to transmit and receive radio waves in a first frequency region, comprising:
a ground plane layer having a maximum size smaller than ⅓ rd of a longest free-space operating wavelength corresponding to a lowest operating frequency within the first frequency region;
a boosting element having a largest dimension smaller than 1/15 th of the longest free-space operating wavelength; and
a radiofrequency system comprising a bank of reactive elements including a capacitor, and a switch selectively connectable to the reactive elements.
2 . The wireless device of claim 1 , wherein the boosting element has a largest dimension smaller than 1/20 th of the longest free-space operating wavelength.
3 . The wireless device of claim 2 , wherein the boosting element has a largest dimension smaller than 1/25 th of the longest free-space operating wavelength.
4 . The wireless device of claim 3 , wherein the boosting element has a largest dimension smaller than 1/30 th of the longest free-space operating wavelength.
5 . The wireless device of claim 4 , wherein the boosting element has a largest dimension smaller than 1/50 th of the longest free-space operating wavelength.
6 . The wireless device of claim 5 , wherein the boosting element has a largest dimension smaller than 1/100 th of the longest free-space operating wavelength.
7 . The wireless device of claim 1 , wherein the ground plane layer has a maximum size smaller than ¼ th of the longest free-space operating wavelength.
8 . The wireless device of claim 7 , wherein the ground plane layer has a maximum size smaller than ⅕ th of the longest free-space operating wavelength.
9 . The wireless device of claim 8 , wherein the ground plane layer has a maximum size smaller than ⅙ th of the longest free-space operating wavelength.
10 . The wireless device of claim 9 , wherein the ground plane layer has a maximum size smaller than 1/7 th of the longest free-space operating wavelength.
11 . A wireless device configured to transmit and receive radio waves in a first frequency region, comprising:
a ground plane layer having a maximum size smaller than ⅓ rd of a longest free-space operating wavelength corresponding to a lowest operating frequency within the first frequency region;
a boosting element having a largest dimension smaller than 1/15 th of the longest free-space operating wavelength; and
a radiofrequency system comprising a set of tunable capacitive elements.
12 . The wireless device of claim 11 , wherein the boosting element has a largest dimension smaller than 1/20 th of the longest free-space operating wavelength.
13 . The wireless device of claim 12 , wherein the boosting element has a largest dimension smaller than 1/25 th of the longest free-space operating wavelength.
14 . The wireless device of claim 13 , wherein the boosting element has a largest dimension smaller than 1/30 th of the longest free-space operating wavelength.
15 . The wireless device of claim 14 , wherein the boosting element has a largest dimension smaller than 1/50 th of the longest free-space operating wavelength.
16 . The wireless device of claim 15 , wherein the boosting element has a largest dimension smaller than 1/100 th of the longest free-space operating wavelength.
17 . The wireless device of claim 11 , wherein the ground plane layer has a maximum size smaller than ¼ th of the longest free-space operating wavelength.
18 . The wireless device of claim 17 , wherein the ground plane layer has a maximum size smaller than ⅕ th of the longest free-space operating wavelength.
19 . The wireless device of claim 18 , wherein the ground plane layer has a maximum size smaller than ⅙ th of the longest free-space operating wavelength.
20 . The wireless device of claim 19 , wherein the ground plane layer has a maximum size smaller than 1/7 th of the longest free-space operating wavelength.